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Class F Tapered Roller Train Bearing TAROL6-1/2x12-U-JP Railway bearings BT2-8612 BB
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Class F Tapered Roller Train Bearing TAROL6-1/2x12-U-JP Railway bearings BT2-8612 BB

Railway Bearing BT2-8612 BB Train Bearing BT2-8612 BB find complete details about Railway Bearing BT2-8612 BB
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AAR freight cars 

The classic TBU design for American freight  cars is following the enveloped size of  Association of American Railroads (AAR)  where initially the tapered roller bearings  replaced plain bearings. This is the reason  for a relatively long axle journal. SKF offers  the inch size TBU design in two versions: • traditional inch size TBU design following  the AAR specification • enhanced inch size TBU design with LL  seals and special material selection for  customers where AAR requirements are  not compulsory For new freight cars with increased cargo,  the inch size compact TBU class K is used.  This SKF design is fitted with LL seals, and a  polymer clip ring and is approved by AAR.

Chinese freight cars 

SKF has developed special TBU designs for  the Chinese freight car bogie designs to  meet the Chinese Railways' standards. This  special design is based on a TBU fitted with  an LL seal on both sides, a polymer spacer  and polymer cages.  These TBU 130 x 230 x 150 are  interchangeable with other TBUs in China. New generations of Chinese freight cars  are designed for 80 t cargo and 120 km/h,  compared to the previous generation of cars  that were designed for 60 t cargo and  80 km/h. To meet these targets and to  further improve operating safety, the  Chinese Ministry of Railways has selected  SKF as a technology partner. The new bogies for freight cars are  equipped with a special execution of  CTBU 150 x 250 x 160 size

Specification Bearing Model Dimensions(mm)
d D B C
TBU 120x195x131.35 1639609 DE 120 195 126 131.35
TBU 130x230x150 197726 130 230 150 150
TBU 130x230x160 BT2-8546 130 230 150 160
TBU 150x250x160 353130-2RS 150 250 154.5 160
CTBU 130x230x150 BT2-8670-01 130 230 166.35 150
CTBU 130x230x160 BT2-8671 130 230 176.35 160
CTBU 150x250x160 353130B 150 250 180.6 160
CTBU 150x250x160 BT2-8720 BD 150 250 180.6 160
CTBU 150×260×160
150 260 180.6 160
CTBU 160×270×170
160 270 195 170
Class C 5” x 9”
119.008 195.263 136.525 142.875
Class D 5 1/2” x 10” BT2-8547 BB 131.775 207.963 146.75 152.4
Class E 6” x 11” BT2-8516 BB 144.475 220.663 155.575 163.51
Class F 6 1/2” x 12” BT2-8612 BB 157.175 252.413 177.8 184.15
CTBU Class K 6 1/2” x 9” BT2-8606 157.175 250 180.6 160
CTBU130X250X160 TBU130X250X160



CTBU130X250/3 TBU130X250/3



Class F 6 1-2x12; BT2-8612 BB --

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    Add : Room 25A23, MingZhu Commercial Building, 88th JingYi Road, JINAN, CHINA
    Phone :0086 531 85066228
    E-mail :SKFbearing@chinakmbearing.com
   Skype : qgbearing
   WhatsApp: 0086 18678825008 
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