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H337840/H337816XD GG6X1/2 Railway train bearings
H337840/H337816XD is imperial TDO integral double‑cup double‑row tapered roller bearing from Boyuan, assembled with two cone assemblies H337840 and one‑piece double‑cup H337816XD with stamped‑steel cage. It belongs to GG‑series heavy‑haul railway derivative bearing. It shares identical double cup with H337844 and H337846, smaller cone bore 165.087 mm for reduced‑journal heavy‑haul axlesTimken. Back‑to‑back configuration withstands extra‑heavy radial load plus bidirectional axial loads, widely used for high‑tonnage railway wheelset axle‑boxes, heavy metallurgical‑mining machinery and large heavy‑duty gearboxes.
| 项目 Item | 公制 Metric | 英制 Imperial |
|---|---|---|
| 内径 d Bore | 165.087 mm | 6.4995 inTimken |
| 外径 D Outer Diameter | 301.701 mm | 11.8780 inTimken |
| 单内圈宽度 B Cone width | 87.313 mm | 3.4375 in |
| 双外圈总宽 C Double cup width | 196.850 mm | 7.7500 inTimken |
| 装配总宽 T Assembly width | 190.543 mm | 7.5017 inTimken |
| 重量 Weight | 55.40 kg | 122.14 lb |
| 参数 Rating | 公制 Metric | 英制 Imperial |
|---|---|---|
| C1 双列动载荷 (10⁶转) | 1 750 000 N | 394 000 lbfTimken |
| C90 单列动载荷 (9000 万转) | 261 000 N | 58 700 lbf |
| C90 (2) 双列动载荷 (9000 万转) | 454 000 N | 102 000 lbf |
| Ca90 轴向动载荷 (9000 万转) | 132 000 N | 29 700 lbf |
TDO one‑piece double‑cup back‑to‑back heavy‑duty construction. Shares H337816XD cup with H337844 & H337846, cone bore 165.087 mm, GG heavy‑haul series.
Large roller cross‑section delivers extreme load‑capacity, excellent shock‑vibration resistance for combined heavy radial and bidirectional axial loads.
Power‑dense internal geometry improves fatigue service life; optimized roller‑raceway contact reduces friction & operating temperature, extends grease service interval.
Stamped‑steel cage for heavy‑shock resistance; black‑oxide / phosphating surface treatment optional.
Precision grades P0/P6/P5 available; clearance C0/C2/C3/C4 optional; open‑type, external sealing unit required for railway service.
⚠️H337840 / H337844 / H337846 cones have different bores, cross‑mix forbidden, use matched‑set only.
