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HM133444/ HM133416XD BT2-8512BB TAROL6-1/2X12 Railway train bearings
HM133444/HM133416XD is an imperial TDO double‑outer double‑row tapered roller bearing manufactured by Boyuan. It consists of two cone assemblies HM133444 and one integral double cup HM133416XD with stamped‑steel cage. It is AAR Class F (6½×12) railway axle‑box bearingTimken. Back‑to‑back arrangement supports heavy radial load plus bidirectional axial loads. Mainly applied for heavy‑haul railway freight cars, locomotive wheelset axle boxes, heavy‑duty construction machinery, large gearboxes and mining equipment.
| 项目 Item | 公制 Metric | 英制 Imperial |
|---|---|---|
| 内径 d Bore | 157.150 mm | 6.1870 in |
| 外径 D Outer Diameter | 252.413 mm | 9.9375 in |
| 单内圈宽度 B Cone width | 69.850 mm | 2.7500 in |
| 双外圈总宽 C Double cup width | 184.150 mm | 7.2500 in |
| 装配总宽 T Assembly width | 177.912 mm | 7.0044 in |
| 重量 Weight | 31.64 kg | 69.75 lb |
| 参数 Rating | 公制 Metric | 英制 Imperial |
|---|---|---|
| C1 双列动载荷 (10⁶转) | 1 040 000 N | 235 000 lbf |
| C90 单列动载荷 (9000 万转) | 156 000 N | 35 000 lbf |
| C90 (2) 双列动载荷 (9000 万转) | 271 000 N | 60 900 lbf |
| Ca90 轴向动载荷 (9000 万转) | 70 400 N | 15 800 lbf |
TDO integral double‑cup, back‑to‑back double‑row design, excellent shock resistance, supports heavy radial and bidirectional axial loads, main bearing for heavy‑haul railway rolling stock.
Power‑dense internal geometry delivers extreme load capacity within compact envelope, extending fatigue service life.
Optimized roller‑raceway contact reduces operating torque and temperature rise, prolong grease service interval.
Stamped steel cage for anti‑vibration & shock resistance; black‑oxide / phosphating surface treatment optional.
Precision grades P0/P6/P5 available; clearance C0/C2/C3/C4 optional; open‑type, matched with external sealing unit for railway axle‑box.
