A universal spring bush (rolled bush), a key component of many joints in JCB machines. It is fitted in the mountings of the lift and dipper rams. Its function is to provide a tight fit and take up play in the bore, while allowing smooth rotational movement of the pin. Made of spring steel, it is resistant to deformation and cracking.
Aftermarket quality product – an intelligent choice combining excellent quality with an attractive price.
| Brand (Machine Type) | Model |
|---|---|
| JCB (Backhoe Loaders) | 3CX, 4CX |
| JCB (Telehandlers) | Loadall 505/525/537/540 |
| JCB (Mini Excavators) | Various models |
The list above is for reference. We recommend verifying the dimensions on your machine before purchasing.
Replacing 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 GX-AFTER pins and bushings is the cheapest way to avoid these problems. Secure your machine and restore its factory precision – order a complete set today.
A spring bush is made from a rolled-up sheet of spring steel. Its outer diameter is slightly larger than the bore, so it locks itself in place after being pressed in. A solid bush (steel or bronze) is rigid and requires a very precise interference fit.
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.
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Working Precision
Eliminates play and restores arm rigidity.
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Machine Protection
Protects expensive components from wear.
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High Durability
Spring steel resistant to cracking.
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.
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