HM124646/ HM124618XD BT2-8735BB TAROL5X9 Railway train bearings

HM124646/HM124618XD is imperial TDO integral double‑cup double‑row tapered roller bearing from Boyuan, assembled with two cone assemblies HM124646 and one one‑piece double cup HM124618XD with stamped‑steel cage. It is AAR Class‑C 5×9 railway axle‑box bearing, interchangeable with BT2‑8545AD cartridge bearingThe Timken.... Back‑to‑back configuration withstands heavy radial load plus bidirectional axial loads, widely used for freight wagon wheelset axle‑boxes, mining machinery, metallurgical rolling‑mill equipment and heavy‑duty gearboxes.

项目 Item	公制 Metric	英制 Imperial
内径 d Bore	119.062 mm	4.6875 in
外径 D Outer Diameter	195.263 mm	7.6875 in
单内圈宽度 B Cone width	57.150 mm	2.2500 in
双外圈总宽 C Double cup width	142.875 mm	5.6250 in
装配总宽 T Assembly width	136.779 mm	5.3850 in
重量 Weight	15.20 kg	33.52 lbTimken

Alias & Equivalent

Inch size: 5" ×9", Railway TAROL5×9‑U‑JP, BT2‑8735 BB
Application: Railway freight / passenger car wheel‑set bearing, withstand heavy radial load & overturning moment, TDO one‑piece double cup structure

Structure Description

TDO = Two‑Dual‑Outer. One‑piece double cup + two separate inner cones, with internal spacer. Used for wheel‑set fixed end, capable of bidirectional axial load.