A high-quality slide bush, made of hardened steel. It is a key component of the loader arm joints, mounted in the eye of the main boom lift rams. Its function is to provide smooth rotational movement for the pin and to bear the enormous forces generated during lifting, minimizing friction and protecting more expensive components (the ram eye, the arm) from wear.
A CORESPEX brand product – premium quality replacements that guarantee long life and reliability, even when working in heavy-duty conditions.
| Brand (Machine Type) | Model |
|---|---|
| JCB (Backhoe Loaders) | 3CX, 4CX |
| JCB (Wheel Loaders) | Various models |
The list above is for reference. We recommend verifying the dimensions on your machine before purchasing.
Replacing loader arm bushings requires the arm to be immobilized and supported. Always use certified axle stands with an appropriate load capacity. Never rely solely on the machine's hydraulics. Use safety glasses and gloves.
For a comprehensive and durable repair, always replace bushings in a set with new pins and seals. Regular greasing of the joints with high-quality HYPTRON grease containing molybdenum disulfide (MoS2) drastically extends the life of the bushings.
Bushings are sacrificial components designed to wear out to protect much more expensive parts like the arm or cylinders. Ignoring worn bushings leads to play, which in turn damages the pin bores (causing them to become oval), ultimately requiring a very expensive re-boring repair.
Replace the bushings if you notice:
Ignoring play on the pins leads to irreversible damage to the bores in the ram and arm, forcing costly re-boring repairs.
A repair performed using a complete set of CORESPEX pins and bushings is the cheapest way to avoid these problems. Secure your machine and restore its factory precision – order a complete set today.
Hardened steel bushings are used in joints where there is very high surface pressure and maximum resistance to deformation is required. Bronze bushings have better sliding properties and are more resistant to seizure in case of a temporary lack of lubrication. The choice of material depends on the specifics of the given joint.
2. I have play on the pin, but the old bush looks okay. Do I have to replace it?Yes. Even if the bush is not cracked, the play indicates that its internal diameter has worn. Installing a new, tight pin in an old, worn bush will not eliminate the play and will lead to rapid wear of the pin. Both components should always be replaced at the same time.
3. What happens if I keep working with worn bushings?Prolonged operation with loose pins causes the bores in the arm or ram to wear out. The holes become oval, and their repair is very expensive and requires specialized machining (a mobile line boring machine). Replacing bushings in time is the cheapest way to avoid this failure.
🛡️
Working Precision
Eliminates play and restores arm rigidity.
🎯
Machine Protection
Protects expensive components from wear.
📦
High Durability
Hardened steel resistant to abrasion.
Have doubts or need confirmation to avoid costly downtime? Call us. Our experts will help you choose the right part to get your equipment back to work as soon as possible.
Data sheet
Specific References
Manufacturer
Responsible person
See also similar products




Fits JCB 3CX 4CX backhoe loaders and front loaders

















