FV taper roller bearing

Sealed type Four row tapered roller bearings Model Lists of FV Bearing(2022年08月05日)

FVrollingbearing — 2022-08-05T15:14:22+0900

https://www.fv-bearing.com/bearings-for-steel-industry/Sealed-type-Four-row-tapered-roller-bearings-replace-Koyo.html
47TS151215*** Sealed type, Four row tapered roller bearings
47TS151418*** Sealed type, Four row tapered roller bearings
47TS282017*** Sealed type, Four row tapered roller bearings
47TS302124*** Sealed type, Four row tapered roller bearings
47TS342418*** Sealed type, Four row tapered roller bearings
47TS342523*** Sealed type, Four row tapered roller bearings
47TS382719A*** Sealed type, Four row tapered roller bearings
47TS392725-1*** Sealed type, Four row tapered roller bearings
47TS403030*** Sealed type, Four row tapered roller bearings
47TS413227*** Sealed type, Four row tapered roller bearings
47TS412819*** Sealed type, Four row tapered roller bearings
47TS412824*** Sealed type, Four row tapered roller bearings
47TS432918*** Sealed type, Four row tapered roller bearings
47TS443032A*** Sealed type, Four row tapered roller bearings
47TS443229B*** Sealed type, Four row tapered roller bearings
47TS443326*** Sealed type, Four row tapered roller bearings
47TS443124*** Sealed type, Four row tapered roller bearings
47TS443133*** Sealed type, Four row tapered roller bearings
47TS453223A*** Sealed type, Four row tapered roller bearings
47TS463120-1*** Sealed type, Four row tapered roller bearings
47TS473320A*** Sealed type, Four row tapered roller bearings
47TS483229-1*** Sealed type, Four row tapered roller bearings
47TS483425B*** Sealed type, Four row tapered roller bearings
47TS483429*** Sealed type, Four row tapered roller bearings
47TS483432*** Sealed type, Four row tapered roller bearings
47TS483434A*** Sealed type, Four row tapered roller bearings
47TS483523A*** Sealed type, Four row tapered roller bearings
47TS493319*** Sealed type, Four row tapered roller bearings
47TS493830*** Sealed type, Four row tapered roller bearings
47TS493531-2*** Sealed type, Four row tapered roller bearings
47TS503727A-1*** Sealed type, Four row tapered roller bearings
47TS513627A-1*** Sealed type, Four row tapered roller bearings
47TS513627B*** Sealed type, Four row tapered roller bearings
47TS523734-5*** Sealed type, Four row tapered roller bearings
47TS523735*** Sealed type, Four row tapered roller bearings
47TS533623B*** Sealed type, Four row tapered roller bearings
47TS553934*** Sealed type, Four row tapered roller bearings
47TS553927-4*** Sealed type, Four row tapered roller bearings
47TS553927A*** Sealed type, Four row tapered roller bearings
47TS563927*** Sealed type, Four row tapered roller bearings
47TS563927B*** Sealed type, Four row tapered roller bearings
47TS563932-2*** Sealed type, Four row tapered roller bearings
47TS563824*** Sealed type, Four row tapered roller bearings
47TS563829A*** Sealed type, Four row tapered roller bearings
47TS564029*** Sealed type, Four row tapered roller bearings
47TS564034A*** Sealed type, Four row tapered roller bearings
47TS564127*** Sealed type, Four row tapered roller bearings
47TS564134*** Sealed type, Four row tapered roller bearings
47TS564335*** Sealed type, Four row tapered roller bearings
47TS574034*** Sealed type, Four row tapered roller bearings
47TS573824A*** Sealed type, Four row tapered roller bearings
47TS584035*** Sealed type, Four row tapered roller bearings
47TS584042C*** Sealed type, Four row tapered roller bearings
47TS584238*** Sealed type, Four row tapered roller bearings
47TS584542*** Sealed type, Four row tapered roller bearings
47TS604025*** Sealed type, Four row tapered roller bearings
47TS604231*** Sealed type, Four row tapered roller bearings
47TS614428B-10*** Sealed type, Four row tapered roller bearings
47TS614428C-1*** Sealed type, Four row tapered roller bearings
47TS614227*** Sealed type, Four row tapered roller bearings
47TS615034*** Sealed type, Four row tapered roller bearings
47TS614127D*** Sealed type, Four row tapered roller bearings
47TS624331-4*** Sealed type, Four row tapered roller bearings
47TS624335A*** Sealed type, Four row tapered roller bearings
47TS624335B-2*** Sealed type, Four row tapered roller bearings
47TS624639*** Sealed type, Four row tapered roller bearings
47TS644537-1*** Sealed type, Four row tapered roller bearings
47TS644434*** Sealed type, Four row tapered roller bearings
47TS644836B*** Sealed type, Four row tapered roller bearings
47TS644842*** Sealed type, Four row tapered roller bearings
47TS664425*** Sealed type, Four row tapered roller bearings
47TS674634A*** Sealed type, Four row tapered roller bearings
47TS684941*** Sealed type, Four row tapered roller bearings
47TS685650*** Sealed type, Four row tapered roller bearings
47TS694625D-1*** Sealed type, Four row tapered roller bearings
47TS694630B*** Sealed type, Four row tapered roller bearings
47TS694936*** Sealed type, Four row tapered roller bearings
45DS704842C*** Sealed type, Four row tapered roller bearings
47TS714932*** Sealed type, Four row tapered roller bearings
47TS714827*** Sealed type, Four row tapered roller bearings
47TS724838A*** Sealed type, Four row tapered roller bearings
47TS755026A*** Sealed type, Four row tapered roller bearings
47TS765837*** Sealed type, Four row tapered roller bearings
47TS795536A*** Sealed type, Four row tapered roller bearings
47TS815529D-2*** Sealed type, Four row tapered roller bearings
47TS815533A*** Sealed type, Four row tapered roller bearings
47TS815536A*** Sealed type, Four row tapered roller bearings
47TS825540*** Sealed type, Four row tapered roller bearings
47TS835944A*** Sealed type, Four row tapered roller bearings
47TS845644*** Sealed type, Four row tapered roller bearings
47TS845748*** Sealed type, Four row tapered roller bearings
47TS846240*** Sealed type, Four row tapered roller bearings
47TS865838A*** Sealed type, Four row tapered roller bearings
47TS865734A*** Sealed type, Four row tapered roller bearings
47TS885948A-3*** Sealed type, Four row tapered roller bearings
47TS886245-1*** Sealed type, Four row tapered roller bearings
47TS886447*** Sealed type, Four row tapered roller bearings
47TS906042*** Sealed type, Four row tapered roller bearings
47TS916028C*** Sealed type, Four row tapered roller bearings
47TS916028D*** Sealed type, Four row tapered roller bearings
47TS926247*** Sealed type, Four row tapered roller bearings
47TS966850*** Sealed type, Four row tapered roller bearings
47TS966542*** Sealed type, Four row tapered roller bearings
47TS967047*** Sealed type, Four row tapered roller bearings
4TRS19B*** Sealed type, Four row tapered roller bearings
4TRS19C*** Sealed type, Four row tapered roller bearings
4TRS19D*** Sealed type, Four row tapered roller bearings
47TS976239*** Sealed type, Four row tapered roller bearings
47TS976242*** Sealed type, Four row tapered roller bearings
47TS976243*** Sealed type, Four row tapered roller bearings
47TS976542A*** Sealed type, Four row tapered roller bearings
47TS986236*** Sealed type, Four row tapered roller bearings
47TS986648*** Sealed type, Four row tapered roller bearings
4TRS510B*** Sealed type, Four row tapered roller bearings
4TRS530A*** Sealed type, Four row tapered roller bearings
4TRS559J*** Sealed type, Four row tapered roller bearings
4TRS559C*** Sealed type, Four row tapered roller bearings
4TRS559A*** Sealed type, Four row tapered roller bearings
4TRS559B*** Sealed type, Four row tapered roller bearings
4TRS559*** Sealed type, Four row tapered roller bearings
4TRS586A*** Sealed type, Four row tapered roller bearings
4TRS595B*** Sealed type, Four row tapered roller bearings
4TRS600A*** Sealed type, Four row tapered roller bearings
4TRS610*** Sealed type, Four row tapered roller bearings
4TRS610A*** Sealed type, Four row tapered roller bearings
4TRS679*** Sealed type, Four row tapered roller bearings
4TRS686A*** Sealed type, Four row tapered roller bearings
4TRS705*** Sealed type, Four row tapered roller bearings
4TRS711N*** Sealed type, Four row tapered roller bearings
4TRS711A*** Sealed type, Four row tapered roller bearings
4TRS711*** Sealed type, Four row tapered roller bearings
4TRS711L*** Sealed type, Four row tapered roller bearings
4TRS800*** Sealed type, Four row tapered roller bearings

Do you have any Request for these Four row tapered roller bearing model lists?(2022年08月04日)

FVrollingbearing — 2022-08-04T15:17:56+0900

FV BEARING INDUSTRIES - CHINA ROLLING MILL BEARING SUPPLIER
Bearing Code
STF101KVE2051*** Sealed type, Four row tapered roller bearings. Dimension: 101.6x200.025x320/320mm. Mass: 47.8Kg. Material:Case hardened steel.
STF150KVE2101E*** Sealed type, Four row tapered roller bearings. Dimension: 150x210x240/240mm. Mass: 26.1Kg. Material:Case hardened steel.
STF170KVS2401Eg*** Sealed type, Four row tapered roller bearings. Dimension: 170x240x175/175mm. Mass: 23Kg. Material:Case hardened steel.
STF170KVS2401E*** Sealed type, Four row tapered roller bearings. Dimension: 170x240x175/175mm. Mass: 24.6Kg. Material:Case hardened steel.
STF170KVS2401Eg*** Sealed type, Four row tapered roller bearings. Dimension: 170x240x175/175mm. Mass: 24.6Kg. Material:Case hardened steel.
WTF170KVS2401Eg*** Sealed type, Four row tapered roller bearings. Dimension: 170x240x175/175mm. Material:Case hardened steel.
STF187KVE2651E*** Sealed type, Four row tapered roller bearings. Dimension: 187.325x269.875x230/230mm. Mass: 43.6Kg. Material:Case hardened steel.
STF215KVS2851Eg*** Sealed type, Four row tapered roller bearings. Dimension: 215.9x288.925x177.8/177.8mm. Mass: 38Kg. Material:Case hardened steel.
STF215KVS2851Eg*** Sealed type, Four row tapered roller bearings. Dimension: 215.900x288.925x177.800/177.800mm. Material:Case hardened steel.
WTF215KVS2851Eg*** Sealed type, Four row tapered roller bearings. Dimension: 215.900x288.925x177.800/177.800mm. Material:Case hardened steel.
STF216KVS3351Eg*** Sealed type, Four row tapered roller bearings. Dimension: 216.103x330.2x263.525/269.875mm. Mass: 77Kg. Material:Case hardened steel.
STF216KVS3351Eg*** Sealed type, Four row tapered roller bearings. Dimension: 216.103x330.2x263.525/269.875mm. Material:Case hardened steel.
WTF216KVS3351Eg*** Sealed type, Four row tapered roller bearings. Dimension: 216.103x330.2x263.525/269.875mm. Material:Case hardened steel.
STF220KVE2903*** Sealed type, Four row tapered roller bearings. Dimension: 220x295x315/315mm. Mass: 61.2Kg. Material:Case hardened steel.
STF220KVE2902*** Sealed type, Four row tapered roller bearings. Dimension: 220x295x315/315mm. Mass: 61.2Kg. Material:Case hardened steel.
STF220KVE2901*** Sealed type, Four row tapered roller bearings. Dimension: 220x295x335/335mm. Mass: 65Kg. Material:Case hardened steel.
STF220KVE3001E*** Sealed type, Four row tapered roller bearings. Dimension: 220x300x270/270mm. Mass: 56.5Kg. Material:Case hardened steel.
STF220KVE3201E*** Sealed type, Four row tapered roller bearings. Dimension: 220x320x290/290mm. Mass: 78.7Kg. Material:Case hardened steel.
STF220KVS3301Eg*** Sealed type, Four row tapered roller bearings. Dimension: 220x330x260/260mm. Mass: 76Kg. Material:Case hardened steel.
STF220KVS3401E*** Sealed type, Four row tapered roller bearings. Dimension: 220x340x303.5/303.5mm. Mass: 99.9Kg. Material:Case hardened steel.
STF220KVS3301Eg*** Sealed type, Four row tapered roller bearings. Dimension: 220x330x260/260mm. Material:Case hardened steel.
WTF220KVS3301Eg*** Sealed type, Four row tapered roller bearings. Dimension: 220x330x260/260mm. Material:Case hardened steel.
STF225KVE3201E*** Sealed type, Four row tapered roller bearings. Dimension: 225x320x230/230mm. Mass: 59.9Kg. Material:Case hardened steel.
STF228KVE4052E*** Sealed type, Four row tapered roller bearings. Dimension: 228.6x400.05x296.875/296.875mm. Mass: 161Kg. Material:Case hardened steel.
STF234KVS3251Eg*** Sealed type, Four row tapered roller bearings. Dimension: 234.95x327.025x196.85/196.85mm. Mass: 49Kg. Material:Case hardened steel.
STF234KVS3251Eg*** Sealed type, Four row tapered roller bearings. Dimension: 234.950x327.025x196.850/196.850mm. Material:Case hardened steel.
WTF234KVS3251Eg*** Sealed type, Four row tapered roller bearings. Dimension: 234.950x327.025x196.850/196.850mm. Material:Case hardened steel.
STF240KVE3202E*** Sealed type, Four row tapered roller bearings. Dimension: 240x320x250/250mm. Mass: 56.3Kg. Material:Case hardened steel.
STF240KVE3301E*** Sealed type, Four row tapered roller bearings. Dimension: 240x338x248/248mm. Mass: 70.6Kg. Material:Case hardened steel.
STF240KVE3302E*** Sealed type, Four row tapered roller bearings. Dimension: 240x338x290/290mm. Mass: 82.6Kg. Material:Case hardened steel.
STF241KVS3451E*** Sealed type, Four row tapered roller bearings. Dimension: 241.478x349.148x228.6/228.6mm. Mass: 71.2Kg. Material:Case hardened steel.
STF244KVS3251Eg*** Sealed type, Four row tapered roller bearings. Dimension: 244.475x327.025x193.68/193.68mm. Mass: 43Kg. Material:Case hardened steel.
STF244KVS3251E*** Sealed type, Four row tapered roller bearings. Dimension: 244.475x327.025x193.68/193.68mm. Mass: 44.8Kg. Material:Case hardened steel.
STF244KVS3251Eg*** Sealed type, Four row tapered roller bearings. Dimension: 244.475x327.025x193.680/193.680mm. Mass: 44.8Kg. Material:Case hardened steel.
WTF244KVS3251Eg*** Sealed type, Four row tapered roller bearings. Dimension: 244.475x327.025x193.680/193.680mm. Material:Case hardened steel.
STF245KVS3402Eg*** Sealed type, Four row tapered roller bearings. Dimension: 245x345x310/310mm. Mass: 85Kg. Material:Case hardened steel.
STF245KVS3402Eg*** Sealed type, Four row tapered roller bearings. Dimension: 245x345x310/310mm. Material:Case hardened steel.
WTF245KVS3402Eg*** Sealed type, Four row tapered roller bearings. Dimension: 245x345x310/310mm. Material:Case hardened steel.
STF250KVE3601AE*** Sealed type, Four row tapered roller bearings. Dimension: 250x365x270/270mm. Mass: 96Kg. Material:Case hardened steel.
STF250KVE3601E*** Sealed type, Four row tapered roller bearings. Dimension: 250x365x270/270mm. Mass: 96Kg. Material:Case hardened steel.
STF254KVS3552Eg*** Sealed type, Four row tapered roller bearings. Dimension: 254x358.775x269.875/269.875mm. Mass: 86Kg. Material:Case hardened steel.
STF254KVS3551E*** Sealed type, Four row tapered roller bearings. Dimension: 254x358.775x269.875/269.875mm. Mass: 84.9Kg. Material:Case hardened steel.
STF254KVS3552Eg*** Sealed type, Four row tapered roller bearings. Dimension: 254.000x358.775x269.875/269.875mm. Material:Case hardened steel.
WTF254KVS3552Eg*** Sealed type, Four row tapered roller bearings. Dimension: 254.000x358.775x269.875/269.875mm. Material:Case hardened steel.
STF260KVS3601Eg*** Sealed type, Four row tapered roller bearings. Dimension: 260x365x340/340mm. Mass: 110Kg. Material:Case hardened steel.
STF260KVS3651Eg*** Sealed type, Four row tapered roller bearings. Dimension: 260x365x340/340mm. Mass: 110Kg. Material:Case hardened steel.
STF260KVS3601Eg*** Sealed type, Four row tapered roller bearings. Dimension: 260x365x340/340mm. Material:Case hardened steel.
STF260KVS3651Eg*** Sealed type, Four row tapered roller bearings. Dimension: 260x365x340/340mm. Material:Case hardened steel.
WTF260KVS3601Eg*** Sealed type, Four row tapered roller bearings. Dimension: 260x365x340/340mm. Material:Case hardened steel.
WTF260KVS3651Eg*** Sealed type, Four row tapered roller bearings. Dimension: 260x365x340/340mm. Material:Case hardened steel.
STF260KVS4251Eg*** Sealed type, Four row tapered roller bearings. Dimension: 260.35x422.275x314.325/317.5mm. Mass: 170Kg. Material:Case hardened steel.
STF260KVS4251Eg*** Sealed type, Four row tapered roller bearings. Dimension: 260.350x422.275x314.325/317.500mm. Material:Case hardened steel.
WTF260KVS4251Eg*** Sealed type, Four row tapered roller bearings. Dimension: 260.350x422.275x314.325/317.500mm. Material:Case hardened steel.
STF266KVS3551Eg*** Sealed type, Four row tapered roller bearings. Dimension: 266.7x355.6x230.188/228.6mm. Mass: 62Kg. Material:Case hardened steel.
STF266KVS3551E*** Sealed type, Four row tapered roller bearings. Dimension: 266.7x355.6x230.188/228.6mm. Mass: 62.4Kg. Material:Case hardened steel.
STF266KVS3551Eg*** Sealed type, Four row tapered roller bearings. Dimension: 266.700x355.600x230.188/228.600mm. Mass: 62.4Kg. Material:Case hardened steel.
WTF266KVS3551Eg*** Sealed type, Four row tapered roller bearings. Dimension: 266.700x355.600x230.188/228.600mm. Material:Case hardened steel.
STF276KVS3952Eg*** Sealed type, Four row tapered roller bearings. Dimension: 276.225x393.7x269.875/269.875mm. Mass: 105Kg. Material:Case hardened steel.
STF276KVS3951E*** Sealed type, Four row tapered roller bearings. Dimension: 276.225x393.7x269.875/269.875mm. Mass: 104Kg. Material:Case hardened steel.
STF276KVS3952Eg*** Sealed type, Four row tapered roller bearings. Dimension: 276.225x393.700x269.875/269.875mm. Material:Case hardened steel.
WTF276KVS3952Eg*** Sealed type, Four row tapered roller bearings. Dimension: 276.225x393.700x269.875/269.875mm. Material:Case hardened steel.
STF279KVS3952Eg*** Sealed type, Four row tapered roller bearings. Dimension: 279.4x393.7x269.875/269.875mm. Mass: 102Kg. Material:Case hardened steel.
STF279KVE3951E*** Sealed type, Four row tapered roller bearings. Dimension: 279.4x393.7x270.63/269.875mm. Mass: 105Kg. Material:Case hardened steel.
STF279KVS3954Eg*** Sealed type, Four row tapered roller bearings. Dimension: 279.4x393.7x320/320mm. Mass: 120Kg. Material:Case hardened steel.
STF279KVE4101*** Sealed type, Four row tapered roller bearings. Dimension: 279.4x410x420/420mm. Mass: 190Kg. Material:Case hardened steel.
STF279KVS3951E*** Sealed type, Four row tapered roller bearings. Dimension: 279.4x393.7x269.875/269.875mm. Mass: 102Kg. Material:Case hardened steel.
STF279KVS3954Eg*** Sealed type, Four row tapered roller bearings. Dimension: 279.4x393.7x320/320mm. Material:Case hardened steel.
WTF279KVS3954Eg*** Sealed type, Four row tapered roller bearings. Dimension: 279.4x393.7x320/320mm. Material:Case hardened steel.
STF279KVS3951E*** Sealed type, Four row tapered roller bearings. Dimension: 279.400x393.700x269.875/269.875mm. Mass: 102Kg. Material:Case hardened steel.
WTF279KVS3952Eg*** Sealed type, Four row tapered roller bearings. Dimension: 279.400x393.700x269.875/269.875mm. Material:Case hardened steel.
STF280KVE3801E*** Sealed type, Four row tapered roller bearings. Dimension: 280x380x290/290mm. Mass: 96.2Kg. Material:Case hardened steel.
STF280KVE3901E*** Sealed type, Four row tapered roller bearings. Dimension: 280x395x340/340mm. Mass: 133Kg. Material:Case hardened steel.
STF280KVE3902E*** Sealed type, Four row tapered roller bearings. Dimension: 280x395x340/340mm. Mass: 133Kg. Material:Case hardened steel.
STF280KVE4101E*** Sealed type, Four row tapered roller bearings. Dimension: 280x410x268/268mm. Mass: 121Kg. Material:Case hardened steel.
STF280KVE4102E*** Sealed type, Four row tapered roller bearings. Dimension: 280x412x340/340mm. Mass: 156Kg. Material:Case hardened steel.
STF290KVS4001Eg*** Sealed type, Four row tapered roller bearings. Dimension: 290x400x346/346mm. Mass: 112Kg. Material:Case hardened steel.
STF290KVS4001 Eg*** Sealed type, Four row tapered roller bearings. Dimension: 290x400x346/346mm. Material:Case hardened steel.
WTF290KVS4001Eg*** Sealed type, Four row tapered roller bearings. Dimension: 290x400x346/346mm. Material:Case hardened steel.
STF304KVS4351Eg*** Sealed type, Four row tapered roller bearings. Dimension: 304.648x438.048x280.99/279.4mm. Mass: 132Kg. Material:Case hardened steel.
STF304KVE4351E*** Sealed type, Four row tapered roller bearings. Dimension: 304.648x438.048x281.74/279.4mm. Mass: 140Kg. Material:Case hardened steel.
STF304KVS4351E*** Sealed type, Four row tapered roller bearings. Dimension: 304.648x438.048x280.99/279.4mm. Mass: 136Kg. Material:Case hardened steel.
STF304KVS4351Eg*** Sealed type, Four row tapered roller bearings. Dimension: 304.648x438.048x280.990/279.400mm. Material:Case hardened steel.
WTF304KVS4351Eg*** Sealed type, Four row tapered roller bearings. Dimension: 304.648x438.048x280.990/279.400mm. Material:Case hardened steel.
STF304KVS4151Eg*** Sealed type, Four row tapered roller bearings. Dimension: 304.8x419.1x269.875/269.875mm. Mass: 111Kg. Material:Case hardened steel.
STF304KVS4151E*** Sealed type, Four row tapered roller bearings. Dimension: 304.8x419.1x269.875/269.875mm. Mass: 109Kg. Material:Case hardened steel.
STF304KVS4155Eg*** Sealed type, Four row tapered roller bearings. Dimension: 304.800x419.100x269.875/269.875mm. Material:Case hardened steel.
WTF304KVS4155Eg*** Sealed type, Four row tapered roller bearings. Dimension: 304.800x419.100x269.875/269.875mm. Material:Case hardened steel.
STF304KVS4152Eg*** Sealed type, Four row tapered roller bearings. Dimension: 304.902x412.648x266.7/266.7mm. Mass: 100Kg. Material:Case hardened steel.
STF304KVS4152E*** Sealed type, Four row tapered roller bearings. Dimension: 304.902x412.648x266.7/266.7mm. Mass: 101Kg. Material:Case hardened steel.
STF304KVS4152Eg*** Sealed type, Four row tapered roller bearings. Dimension: 304.902x412.648x266.700/266.700mm. Material:Case hardened steel.
WTF304KVS4152Eg*** Sealed type, Four row tapered roller bearings. Dimension: 304.902x412.648x266.700/266.700mm. Material:Case hardened steel.
STF310KVS4301Eg*** Sealed type, Four row tapered roller bearings. Dimension: 310x430x310/310mm. Mass: 140Kg. Material:Case hardened steel.
STF310KVS4302Eg*** Sealed type, Four row tapered roller bearings. Dimension: 310x430x350/350mm. Mass: 155Kg. Material:Case hardened steel.
STF310KVS4301Eg*** Sealed type, Four row tapered roller bearings. Dimension: 310x430x310/310mm. Material:Case hardened steel.
STF310KVS4302Eg*** Sealed type, Four row tapered roller bearings. Dimension: 310x430x350/350mm. Material:Case hardened steel.
WTF310KVS4301Eg*** Sealed type, Four row tapered roller bearings. Dimension: 310x430x310/310mm. Material:Case hardened steel.
WTF310KVS4302Eg*** Sealed type, Four row tapered roller bearings. Dimension: 310x430x350/350mm. Material:Case hardened steel.
STF317KVS4251Eg*** Sealed type, Four row tapered roller bearings. Dimension: 317.5x422.275x269.875/269.875mm. Mass: 100Kg. Material:Case hardened steel.
STF317KVE4451E*** Sealed type, Four row tapered roller bearings. Dimension: 317.5x447.675x367/367mm. Mass: 184Kg. Material:Case hardened steel.
STF317KVS4251Eg*** Sealed type, Four row tapered roller bearings. Dimension: 317.500x422.275x269.875/269.875mm. Material:Case hardened steel.
WTF317KVS4251Eg*** Sealed type, Four row tapered roller bearings. Dimension: 317.500x422.275x269.875/269.875mm. Material:Case hardened steel.
STF343KVS4551Eg*** Sealed type, Four row tapered roller bearings. Dimension: 343.052x457.098x254/254mm. Mass: 110Kg. Material:Case hardened steel.
STF343KVE4561E*** Sealed type, Four row tapered roller bearings. Dimension: 343.052x457.098x299/299mm. Mass: 137Kg. Material:Case hardened steel.
STF343KVS4551E*** Sealed type, Four row tapered roller bearings. Dimension: 343.052x457.098x254/254mm. Mass: 114Kg. Material:Case hardened steel.
STF343KVS4551 Eg*** Sealed type, Four row tapered roller bearings. Dimension: 343.052x457.098x254.000/254.000mm. Material:Case hardened steel.
WTF343KVS4551Eg*** Sealed type, Four row tapered roller bearings. Dimension: 343.052x457.098x254.000/254.000mm. Material:Case hardened steel.
STF355KVS4551Eg*** Sealed type, Four row tapered roller bearings. Dimension: 355.6x457.2x252.412/252.412mm. Mass: 98Kg. Material:Case hardened steel.
STF355KVS4851E*** Sealed type, Four row tapered roller bearings. Dimension: 355.6x482.6x265.112/269.875mm. Mass: 141Kg. Material:Case hardened steel.
STF355KVS4551 Eg*** Sealed type, Four row tapered roller bearings. Dimension: 355.600x457.200x252.412/252.412mm. Material:Case hardened steel.
WTF355KVS4551Eg*** Sealed type, Four row tapered roller bearings. Dimension: 355.600x457.200x252.412/252.412mm. Material:Case hardened steel.
STF395KVE5401E*** Sealed type, Four row tapered roller bearings. Dimension: 395x545x360/360mm. Mass: 255Kg. Material:Case hardened steel.
STF406KVS5451Eg*** Sealed type, Four row tapered roller bearings. Dimension: 406.4x546.1x288.925/288.925mm. Mass: 184Kg. Material:Case hardened steel.
STF406KVE5454E*** Sealed type, Four row tapered roller bearings. Dimension: 406.4x546.1x346/346mm. Mass: 231Kg. Material:Case hardened steel.
STF406KVS5451E*** Sealed type, Four row tapered roller bearings. Dimension: 406.4x546.1x288.925/288.925mm. Mass: 188Kg. Material:Case hardened steel.
STF406KVS5451Eg*** Sealed type, Four row tapered roller bearings. Dimension: 406.400x546.100x288.925/288.925mm. Material:Case hardened steel.
WTF406KVS5451Eg*** Sealed type, Four row tapered roller bearings. Dimension: 406.400x546.100x288.925/288.925mm. Material:Case hardened steel.
STF420KVE5901E*** Sealed type, Four row tapered roller bearings. Dimension: 420x590x395/375mm. Mass: 332Kg. Material:Case hardened steel.
STF430KVS5751E*** Sealed type, Four row tapered roller bearings. Dimension: 430x575x380/380mm. Mass: 271Kg. Material:Case hardened steel.
STF440KVE5901E*** Sealed type, Four row tapered roller bearings. Dimension: 440x590x510/510mm. Mass: 396Kg. Material:Case hardened steel.
STF440KVE6201E*** Sealed type, Four row tapered roller bearings. Dimension: 440x620x454/454mm. Mass: 435Kg. Material:Case hardened steel.
STF450KVS5901Eg*** Sealed type, Four row tapered roller bearings. Dimension: 450x595x368/368mm. Mass: 272Kg. Material:Case hardened steel.
STF450KVS5901E*** Sealed type, Four row tapered roller bearings. Dimension: 450x595x368/368mm. Mass: 273Kg. Material:Case hardened steel.
STF450KVS5901 Eg*** Sealed type, Four row tapered roller bearings. Dimension: 450x595x368/368mm. Material:Case hardened steel.
WTF450KVS5901 Eg*** Sealed type, Four row tapered roller bearings. Dimension: 450x595x368/368mm. Material:Case hardened steel.
STF457KVS5951Eg*** Sealed type, Four row tapered roller bearings. Dimension: 457.2x596.9x276.22/279.4mm. Mass: 206Kg. Material:Case hardened steel.
STF457KVS5951E*** Sealed type, Four row tapered roller bearings. Dimension: 457.2x596.9x276.225/279.4mm. Mass: 202Kg. Material:Case hardened steel.
STF457KVS5951 Eg*** Sealed type, Four row tapered roller bearings. Dimension: 457.200x596.900x276.225/279.400mm. Mass: 202Kg. Material:Case hardened steel.
WTF457KVS5951Eg*** Sealed type, Four row tapered roller bearings. Dimension: 457.200x596.900x276.225/279.400mm. Material:Case hardened steel.
STF460KVE5901E*** Sealed type, Four row tapered roller bearings. Dimension: 460x590x470/470mm. Mass: 322Kg. Material:Case hardened steel.
STF480KVE6101A*** Sealed type, Four row tapered roller bearings. Dimension: 480x615x435/435mm. Mass: 323Kg. Material:Case hardened steel.
STF480KVE6702E*** Sealed type, Four row tapered roller bearings. Dimension: 480x678x574/574mm. Mass: 662Kg. Material:Case hardened steel.
STF482KVS6151Eg*** Sealed type, Four row tapered roller bearings. Dimension: 482.6x615.95x330.2/330.2mm. Mass: 235Kg. Material:Case hardened steel.
STF482KVE6152E*** Sealed type, Four row tapered roller bearings. Dimension: 482.6x615.95x330.2/330.2mm. Mass: 243Kg. Material:Case hardened steel.
STF482KVE6155E*** Sealed type, Four row tapered roller bearings. Dimension: 482.6x615.95x419.1/402.05mm. Mass: 302Kg. Material:Case hardened steel.
STF482KVE6453E*** Sealed type, Four row tapered roller bearings. Dimension: 482.6x647.7x417.512/417.512mm. Mass: 392Kg. Material:Case hardened steel.
STF482KVS6151E*** Sealed type, Four row tapered roller bearings. Dimension: 482.6x615.95x330.2/330.2mm. Mass: 237Kg. Material:Case hardened steel.
STF482KVS615lEg*** Sealed type, Four row tapered roller bearings. Dimension: 482.600x615.950x330.200/330.200mm. Mass: 237Kg. Material:Case hardened steel.
WTF482KVS6151Eg*** Sealed type, Four row tapered roller bearings. Dimension: 482.600x615.950x330.200/330.200mm. Material:Case hardened steel.
STF488KVE6251E*** Sealed type, Four row tapered roller bearings. Dimension: 488.95x622.3x365.125/365.125mm. Mass: 272Kg. Material:Case hardened steel.
STF490KVE6201A*** Sealed type, Four row tapered roller bearings. Dimension: 490x625x435/435mm. Mass: 329Kg. Material:Case hardened steel.
STF509KVE6554E*** Sealed type, Four row tapered roller bearings. Dimension: 509.948x654.924x377/379mm. Mass: 321Kg. Material:Case hardened steel.
STF509KVS6551E*** Sealed type, Four row tapered roller bearings. Dimension: 509.948x654.924x377/379mm. Mass: 314Kg. Material:Case hardened steel.
STF520KVE7301E*** Sealed type, Four row tapered roller bearings. Dimension: 520x735x535/535mm. Mass: 726Kg. Material:Case hardened steel.
STF558KVE7351E*** Sealed type, Four row tapered roller bearings. Dimension: 558.8x736.6x540/540mm. Mass: 625Kg. Material:Case hardened steel.
STF595KVE8451E*** Sealed type, Four row tapered roller bearings. Dimension: 595.312x844.55x615.95/615.95mm. Mass: 1110Kg. Material:Case hardened steel.
STF595KVE8452E*** Sealed type, Four row tapered roller bearings. Dimension: 595.312x844.55x615.95/615.95mm. Mass: 1110Kg. Material:Case hardened steel.
STF609KVE7851E*** Sealed type, Four row tapered roller bearings. Dimension: 609.6x787.4x361.95/361.95mm. Mass: 452Kg. Material:Case hardened steel.
STF711KVE9152A*** Sealed type, Four row tapered roller bearings. Dimension: 711.2x914.4x387.35/317.5mm. Mass: 585Kg. Material:Case hardened steel.
STF711KVE9153E*** Sealed type, Four row tapered roller bearings. Dimension: 711.2x914.4x410/410mm. Mass: 681Kg. Material:Case hardened steel.
STF711KVE9155E*** Sealed type, Four row tapered roller bearings. Dimension: 711.2x914.4x425.45/387.35mm. Mass: 675Kg. Material:Case hardened steel.
STF785KVE1001E*** Sealed type, Four row tapered roller bearings. Dimension: 785x1015x700/700mm. Mass: 1460Kg. Material:Case hardened steel.
STF825KVE1101E*** Sealed type, Four row tapered roller bearings. Dimension: 825.5x1160x565/565mm. Mass: 1890Kg. Material:Case hardened steel.

How to Deal with Small Holes on the Surface of Crossed Roller Bearings?(2022年07月29日)

FVrollingbearing — 2022-07-29T16:35:04+0900

https://www.fv-bearing.com/products.html
On the surface of crossed roller bearing rings, single or multi-point black dot holes are often found. Sometimes we mistakenly think it's because of material defects, but it's not. These small holes occur on the surface of the ring, so it is also called small hole corrosion, which is localized corrosion of the surface. Then, how are the small holes on the surface of these bearing rings formed, and how should we deal with these small holes?

The formation principle of small holes: The reason for the damage of the crossed roller bearing is that the metal surface of the bearing has a large composition change, non-metallic inclusions, foreign matter adhesion, mechanical damage, cracks in the oxide film and other chemical or physical properties damage. After the bearing metal surface is damaged, its surface is in an active dissolution state, which is an irreversible reaction.

Characteristics of small holes on the surface of crossed roller bearings: Longitudinal dissection of the point defects in the small holes on the surface of crossed roller bearings, observed under a microscope, it is found that the cross-sectional shape of the corrosion hole is corroded perpendicular to the surface. The corrosion of the small holes not only affects the accuracy and surface roughness of the crossed roller bearing, but also reduces the service life and leads to the damage of the bearing, which should be paid enough attention.

Once pinholes appear, here are some easy ways to deal with them:
1. When small holes are formed on the surface of the crossed roller bearing, an appropriate amount of grinding should be used, the corrosion holes should be polished as much as possible, and the small holes should be smoothed at the beginning of corrosion without leaving residues;
2. Anti-rust liquid can be sprayed on the bearing surface to prevent corrosion from happening again.
3. Pay more attention to all aspects of production.
4. You can soak the rust-removed cross-roller bearing parts in the anti-rust solution for a period of time.

In fact, the ideal state is not to let small holes appear on the surface of the crossed roller bearing, then we need to do preventive work, such as keep the surface of parts clean, avoid physical and chemical damage, provide a good storage environment for crossed roller bearings, etc. Of course, the above are only theoretical methods, customers will still have various situations in the process of use, you can consult our FV bearing, a professional bearing supplier!

If you want to know more, please contact us:
Tel: 0086-379-62901536
Mob: 0086-18638891360
Mail: sales@fv-bearing.com
Web:https://www.fv-bearing.com

Four-row cylindrical roller bearing model list that FV can supply(2022年07月26日)

FVrollingbearing — 2022-07-26T16:45:27+0900

https://www.fv-bearing.com/cylindrical-roller-bearings/Four-row-cylindrical-roller-bearings.html
Four-row cylindrical bearings are almost exclusive to metals industry and carry heavy radial loads in steel, aluminum and other metal rolling mills.
Design Attributes:
1. Design offers very high radial load capacity. No thrust capacity.
2. Straight and tapered bores available.
3. Inner races are interchangeable with outer assemblies.

Bearing Model
FC1623108
FC182870
FC182874
FC1828105
FC202780
FC202870
FC202880
FC2028104
FC202970
FC2030106
FC223490
FC2234120
FC243692
FC2436105
FC2640104
FC2640125
FC2838119
FC284280
FC2842106
FC2842125
FC2842155
FC2942155
FC2945156
FC3040120
FC3042120
FCD3042120
FCD3042120
FC3042150
FC3044120
FC3044127
FC3044150
FC3044150A
FCD3045112
FC3045120
FCD3045120
FC3045150
FC3045150A
FC3045136
FC3046130
FC3046156
FC3046168
FC3050120
FC3050150
FC3244180
FC3246130
FC3246130A
FC3246168
FC3246168A
FC3246168A1
FC3246180
FC3246180A
FC3248120
FC3248124
FC3248145
FC3248168
FCD3248168
FC3248170
FC3446120
FC3446130
FCD3446160
FC3446180
FC3448130
FC3448156
FC3448156A
FC3448160
FC3448190
FC3450168
FC3450168A
FC3450170
FC3451180
FC3452120
FC3452150
FC3452150A
FC3452170
FC3452225
FCD3650100
FC3650120
FC3650156
FC3650168
FC3652120
FC3652124
FC3652168
FCD3652168
FC3653180
FC3653180A
FC3656180
FC3645180A
FC3852124
FC3852124A
FC3852168
FC3852168A
FC3853124
FC3854168
FC3854170
FC3854170A
FC3854200
FC3856200
FC3856200A
FC3858190
FC4050200
FC4054170
FC4056152
FC4056170
FC4056170A
FC4056188
FC4056190
FC4056200
FC4056200A
FC4058130
FC4058192
FCD4058192
FC4062160
FC4062206
FCD4062230
FCD4062265
FC4064216
FC4258192
FC4258192A
FC4260170
FC4260210
FCD4260210
FC4458192
FC4460150
FC4460160
FC4460192
FCD4460200
FC4462192
FC4462192A
FC4462192A1
FC4462204
FC4462215
FC4462225
FC4462225A
FC4462225A1
FC4464160
FC4464210
FC4464210A
FC4466230
FC4468180
FCD4468290
FC4666170
FC4666206
FC4666206A
FC4668260
FCD4668260
FC4673250
FC4866180
FC4866220
FCD4866220
FC4866220A
FC4866220A1
FC4866250
FC4868192
FC4868200
FC4868220
FCD4870220
FC4872220
FC4872220A
FCD4872290
FC5068170
FCD5068220
FC5068230
FC5070220
FCD5070220
FC5072220
FCD5271260
FC5272192
FC5272192A
FC5272200
FC5272220
FC5272200
FC5272230
FC5272230A
FC5272230A1
FC5272260
FCD5272260
FC5274200
FC5274220
FC8274220A
FC5274230
FC5274260
FC5276220
FC5276280
FCD5276280
FC5280290
FCD5280290
FCD5280335
FC5476230
FC5476280
FCD5476280
FC5476275
FC5478220
FC5478240
FC5670208
FC5675200
FC5676170
FC5676192
FCD5676290
FC5678220
FCD5678220
FC5678220A
FC5678220A1
FC5678240
FC5678275
FCD5678275
FC5678275A
FC5678275A1
FCD5680285
FCD5682300
FCD5684280
FC5684280A
FC5878234
FC5880180
FC5882240
FCD5882240
FC5884300
FC5888310
FC6080300
FC6084218
FC6084240
FC6084240A
FC6084240A1
FCD6084240
FC6084300A
FCD6084300
FCD6084300A
FCD6084320
FC6086240
FC6092270
FCD6092350
FC6284300
FC6286240
FC6288240
FC6288240A
FC6488230
FC6488240
FCD6488240
FCD6488300
FC6490240
FCD6490240
FC6490240A
FC6492240
FCD6492300
FC6492340
FCD6492340
FCD6494350
FCD6496290
FCD6496290A
FCD6496350
FC6686230
FC6688200
FC6688200A
FC6692340
FCD6692340
FC6692340A
FC6692340A1
FC6692380
FC6889250
FC6890250
FCD6890250A
FC6890250A1
FCD6890250A1
FC6890250A2
FC6890250A3
FCD6892260
FCD6896280
FCD6896350
FCD6896350A
FC6896370
FCD6896385
FC6898300
FC6898300A
FC6898300A1
FCD68100370
FCD68112380
FCD70100380
FCD70100410
FCD70100460
FCD70104300
FC7296290
FC7296290A
FC7296290A1
FCD72100250
FC72102370
FCD72102370A
FCD72102380
FC72102400
FCD72102400
FCD72104380
FC7496230
FC7496250
FC74104380
FCD74104380
FC74104400
FCD74104400
FC74108400
FC76100290
FC76104280
FC76104290
FC76104290A
FC76104300
FCD76108300
FC76108340
FCD76108340
FCD76108360
FC76108400
FCD76108400
FC76108400
FC78102290
FCD78108320
FCD78110400
FC80104250
FC80110300
FCD80112360
FC80112400
FCD80112400
FCD80112410
FC80118420
FCD80118440
FCD80120380
FCD82112400
FCD82120440
FC84112280
FCD84112400
FC84116230
FCD84116320
FCD84120440
FCD84120440A

Precautions for rolling bearings in high speed rotation(2022年07月22日)

FVrollingbearing — 2022-07-22T16:16:38+0900

https://www.fv-bearing.com/
Rolling bearings are divided into roller bearings and ball bearings. Generally, ball bearings run faster than roller bearings. There is no problem with the new rolling bearing rotate in high-speed, but some bearings with poor quality, or bearings that have been used for a period of time, if they also bear high-speed rotation, the bearings are easily damaged. Today, let's explain some precautions when rolling bearings rotate at high speed:

1. Select high-precision bearings, bearings can be divided into P0, P6, P5, P4, P2 grades, the higher the grade, the better the rotation. Of course, the higher the precision of the bearing, the more expensive the price.

2. When analyzing the internal clearance of the bearing, the reduction of the internal clearance of the bearing caused by the increase of temperature should be considered;

3. Analyze the material and form of the cage. For the occasion of high-speed rotation, copper alloy or phenolic resin should be used to cut the cage, and there are also synthetic resin-shaped cages suitable for high-speed rotation;

4. The lubrication method should adopt circulating lubrication, jet lubrication, oil mist lubrication, oil-air lubrication, etc. suitable for high-speed rotation.

5. Bearings are used in high-speed rotation, especially when the speed is close to or exceeds the extreme speed recorded in the dimension table, special attention should be paid to the above points.

Luoyang FV Bearing, your reliable bearing supplier.

Maintenance Methods of rolling bearings(2022年07月15日)

FVrollingbearing — 2022-07-15T17:33:04+0900

First, it is necessary to purchase high-quality rolling mill bearings, and the bearings are also the most suitable for the rolling mill stand. You'd better to choose the bearing supplier which have engineers. After the bearing is selected, the next step is to use it. After the rolling mill bearing is installed, if it wants to keep it in good working condition and performance for a long time, it is necessary to pay attention to daily maintenance, so that small damage can be found in time and greater losses can be avoided. At the same time, it can ensure the reliability of bearing operation and improve its production performance.

The maintenance of rolling mill bearings should be carried out on a regular basis, mainly including: monitoring the running state of the bearings, replacing lubricants, and regularly disassembling and inspecting, etc., which must be completed in accordance with certain operating standards.

Lubrication is a method of bearing maintenance. Through lubrication and maintenance, abnormal friction between bearing rings, rolling elements and cages can be reduced, excessive wear of bearings can be avoided, and the service life of rolls can be prolonged. The temperature generated by friction is lowered as soon as possible to prevent other foreign objects from invading into the bearing and affecting the normal operation of the production line. The lubrication and maintenance of bearings are divided into grease lubrication and oil lubrication. If you only want to improve the lubrication of the bearing through maintenance, oil lubrication is suitable. If you want to simplify the characteristics of the structure around the bearing through maintenance, grease lubrication is suitable.

When maintaining the disassembled bearing, the bearing should also be professionally cleaned. This is to remove the bearing from the baseline. First, look at the appearance of the bearing to determine the residual amount of lubricant, and then clean it with use detergent or kerosene to clean the bearing. It should be placed in a special container during operation. The cleaning environment should be kept clean, and the bearing should not be directly contacted with dirt during the cleaning process. When cleaning the bearing, it is necessary to rotate while cleaning to avoid damage to the rolling surface of the bearing, and use a clean brush to remove the grease and attachments in it. After cleaning, put it in the cleaning oil and carefully clean it. Here, pay attention to the cleaning oil. It should be replaced frequently and cannot be used for a long time.

After the bearing is cleaned, it should be carefully inspected. It is necessary to check the state of the bearing surface, rolling element and mating surface, as well as the integrity of the cage. If it is found that the gap between the bearing parts increases or the dimensional accuracy decreases, it is necessary to replace the new bearing in time. Special attention should be paid to some large-sized bearings, such as four-row tapered roller bearings, four-row cylindrical roller bearings, etc., special equipment must be used to detect them, and the bearings in the key parts of the rolling mill production line should be maintained and inspected more carefully.

Basic Introduction of Four-row Taper Roller Bearings(2022年07月14日)

FVrollingbearing — 2022-07-14T12:54:20+0900

FV four-row taper roller bearings are installed as complete assemblies and take axial loads in addition to heavy radial loads, so that generally it is not requested separate thrust bearings in such arrangements. They are commonly used in rolling mill applications. For quick roll changes, the bearings have a loose fit on the roll necks, but there is the disadvantage that the inner rings wander on their seatings causing wear. To reduce these negative effects, FV bearings have a helical groove in the bore and lubrication grooves in the side faces of the inner rings. These grooves enable lubricant to be supplied to the contact surfaces of the inner ring and seating. Since wear and shock resistance under heavy rolling loads is a requirement for roll neck bearings, highest quality carburizing grade bearing alloy steels are normally used in FV four-row taper roller bearings.

Besides, for large size bearings, pierced rollers and steel pin-type cage for maximum load ratings possible are applied. The induced thrust resulting from radial loading is cancelled within the double cones and it eliminates excessive loads on clamping and spacing members. FV produces this style of bearings in two base designs, TQO and TQI configuration, where the main difference is the mutual arrangement of the roller complements and the number of inner and outer rings dictated by this.

The TQO type is composed in its standard configuration of two double cone assemblies, one central double cup, two single cups and factory adjusted cup and cone spacers. The spacers of each bearing are face ground after accurate measurement of the distance between adjacent cups and cones to obtain the asked initial play (also defined as BEP - Bench End Play). So the bearing parts cannot be interchanged and they are individually marked for proper assembly. Lubrication grooves and oil holes are provided in the cup spacers and in the double cup. Furthermore, lubricant slots in the cones side faces and cone spacer permit the lubricant to go through the bearing to the roll neck. These bearings can be provided with lateral extension of the double cones used as sealing surface. This sealing feature offers better protection against hostile environment.

For high speed rolling mill requirements, the TQO bearing sets may have tapered bore with features of high capacity, compactness and a mounting system that guarantees a positive interference fit on the roll neck. The TQI type is composed in its standard configuration of one double cone assembly, two single cone assemblies and two double cups. A four-separated individual single cup configuration is also available. This design facilitates the reworking of the bearing. These bearings are fitted with pressed steel cage or with pierced rollers and steel pin-type cage. The fact that contact angles diverge makes the bearings well suited to resist to warping and misalignment. The version with tapered bore that, with its three-cone design, assures easy assembly and disassembly (designation TQIT and TQITE) is also available.

In FV sealed TQOS type sets, four-row taper roller bearings have been developed to improve the lubrication in service. The incorporation of this type of bearing simplifies design, reduces grease consumption and routine maintenance requirements and attains longer service life. The seals, fitted on both sides of the bearing set, are produced in several designs depending on bearing size and application needs; the most common ones are the integrated lateral unitized seals (European version), the integrated lateral narrow seals (compact seal concept) and the loose flange lateral unitized seals (Japanese version). So the basic design with the garter seal, made by reinforced fluoro rubber and steel spring, is located in the integral external cups. Alternatively, the separate seal carrier flanges are matched to the cups and a chock type seal runs on extended surface of inner rings.

Furthermore, FV seals have been redesigned in new type to increase seal durability and efficiency: while maintaining an overall narrow profile, these seals optimize the available space by utilizing the area directly adjacent to or underneath the cage bore, with the result of the usage of longer rollers with consequent increased bearing capacity similar to open type version. FV sealed four-row taper roller bearings are usually provided also with O-rings in the outboard cup outside diameter to seal contaminants from the bearing outer diameter and/or with a cone seal set designed to accommodate relative motion between inner rings and to prevent build-up of negative pressure (anti-vortex system technology for longer bearing life and less lubricant deterioration). Phosphate treatment for rings, rollers and spacers (suffix PT4) for anti-rust and anti-corrosion properties under water, alkalescent and acidescent working conditions is also available.

FV produces special executions of TQO made of four single cups and two double cone assemblies (design without spacers). Most of TQO and TQI four row taper roller bearings are manufactured with inch dimensions as per American AFBMA 19/1974 and as per FV standard practice, dimensional and running accuracy grade is in accordance with class 2 or 4.
https://www.fv-bearing.com/tapered-roller-bearings.html