A high-quality bronze slide bush for the upper kingpost pivot pin. It is a key component of the joint, responsible for ensuring smooth slewing motion of the backhoe arm and for bearing immense forces. The use of bronze guarantees excellent sliding properties and resistance to seizing, which translates to a long service life for the entire joint.
GX-AFTER is the smart choice for your machine. We provide high-class replacement parts that combine excellent quality with an attractive price. Each part is carefully verified to ensure full compatibility and reliability you can depend on.
| Brand (Machine Type) | Model |
|---|---|
| JCB (Backhoe Loaders) | 3CX, 4CX (machines with the older rack and pinion slew system, after serial number 405989) |
The list above is for reference. Before purchasing, we recommend verifying the part number in the parts catalogue for your machine.
Replacing kingpost bushings requires dismantling heavy arm components. Always secure the arm from falling using the service lock and certified axle stands. Never rely solely on the machine's hydraulics. Use safety glasses and gloves.
The bushing is a sacrificial sliding component that wears out first, protecting the more expensive bores in the kingpost. A worn bushing leads to play, which damages the bores (a "sloppy" joint), which in turn requires a very expensive re-boring repair.
Ignoring play leads to wear in the kingpost bores.
The cost of re-boring worn-out holes is many times greater than the cost of a preventative replacement of pins and bushings. Protect your machine from expensive repairs – order a complete GX-AFTER set and restore the factory rigidity to the joints.
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Play in the backhoe can come from many places. This bushing eliminates play at the upper kingpost mounting to the carriage. You should also check the lower mounting, bushings, slew ram pins, and wear pads. A comprehensive repair requires assessing and replacing all worn components.
2. Why is this bushing made of bronze?Bronze has excellent sliding properties and a low coefficient of friction. In case of a temporary lack of lubrication, bronze is more resistant to seizing than steel, which protects the more expensive pin and housing from damage.
3. What happens if I keep working with a worn bushing?Prolonged operation with a worn bushing causes the bores in the kingpost to wear out. The holes become oval, and their repair is very expensive and requires specialized machining (a mobile line boring machine). In extreme cases, the pin can break, leading to a dangerous failure.
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Working Precision
Eliminates play and "rocking" of the arm.
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Machine Protection
Protects expensive components from wear.
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High Durability
Bronze resistant to abrasion and seizing.
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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