Products Description
Train bolts are usually composed of a screw and a nut. The screw part of the bolt has high mechanical strength and can remain stable in a high-stress environment. The nut is tightened to provide the necessary preload force to ensure the fastening effect of the connection.
More product information
The working principle of train bolts is mainly to firmly combine the track and the sleeper through the screw tightening action to form a stable overall structure. When the train runs at high speed, the track will be subjected to constant vibration and stress concentration. Reasonable bolt design can effectively disperse the pressure.
Heavy hex head frog bolt
| Size | Dia.3/4″－1-3/8″, Length up to 30″ |
| Standard | ASTM A325 |
| Material | A325 |
| Finish | Black, Zinc plated |
Types of track bolts
1. T-type rail bolts: mainly used to connect T-type rails and rail bases, usually used in high-speed railways and heavy-load railways.
2. V-type rail bolts: mainly used to connect V-type rails and rail bases, usually used in urban rail transit systems and light rails.
3. Grade rail bolts: mainly used to connect grade rails and rail bases, usually used in general railways and industrial and mining railways.
Application of train bolts:
Track connection bolts can be divided into several common types according to different structural designs and uses:
The high-quality type is ordinary bolts, suitable for standard track connections, usually made of high-strength steel to meet general stress requirements. This type of bolt is mostly used in conventional laying or maintenance, easy to install and low cost. The second type is high preload bolts, which have higher preload capacity and are suitable for high-speed railways or heavy-load railways. They can remain stable under greater stress. The third type is spring pad bolts, equipped with spring pads or special washers, which can effectively absorb vibration and reduce looseness. They are suitable for areas with frequent vibration or harsh environments.
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