Chongqing Hengtairail Equipment Co.,Ltd.
Global Rolling Stock Parts Supplier
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Product overview
The knuckle is an important component of the coupler, and the knuckle is the key connecting part between rail cars. The function of the knuckle is to realize the connection between the locomotive and the vehicle / the vehicle and the vehicle, and to transmit the traction force and the impact force, to maintain a certain distance between the vehicles.
Product specification
| S.No. | Item | Value |
| 1 | Standard | AAR-M211 |
| 2 | Type | Thailand Knuckle |
| 3 | Material | Grade E steel |
| 4 | Technical | Casting |
| 5 | Hardness | 241HBW-311HBW |
| 6 | Nil-ductility (transition) temperature | ﹣51.1℃ |
| 7 | Impact absorbing energy | ≥27J(-40℃) |
| 8 | Low temperature impact property | ≥20J(-18℃) |
| 9 | Magnetic particle testing | Conform to ASTM Method E-709 |
Product advantages
① Simple process
② Strong maneuverability
③ Meet the requirements of heavy load, impact resistance, extrusion resistance and frequent stretching of railway freight cars