A high-quality bronze bushing 808/00186 by GX-AFTER. This is a key slide bearing fitted under the slew pinion gear of the rear arm. This bush is dedicated to older JCB 3CX and 4CX models (produced up to VIN 405988, approx. 1997), which are equipped with the old rack and pinion slew type. It features an internal grease groove and one hole for grease distribution.
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| Brand | Type / Series / Model |
|---|---|
| JCB | Backhoe Loaders: 3CX (up to 1997 / VIN 405988), 4CX (up to 1997 / VIN 405988) - Rack and pinion slew type only. |
The list above is for reference. It is crucial to verify the slew type (rack) and bush dimensions (95x83x25 mm).
This bush works directly with the slew pinion gear and the slew rack. When replacing, we recommend checking the teeth on both components and replacing the upper and lower carriage slide bushes (e.g., 809/00081).
A worn slew pinion bush causes excessive play in the slew mechanism. This leads to violent jerking of the arm when starting/stopping slew, making precise digging difficult. In extreme cases, the play can cause damage to the teeth on the rack and pinion, a very expensive repair.
The 808/00186 bronze bush is the slide bearing for the slew pinion shaft in older backhoe loaders (rack and pinion slew). It is seated in the carriage (kingpost), and the pinion shaft rotates inside it. Its job is to precisely guide the pinion gear and absorb the high radial forces during the slew movement.
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The carriage bushes (e.g., 809/00081) are the large rings that the entire carriage slides left and right on. This bush (808/00186) is smaller (95x83x25 mm), sits *inside* the carriage, and the slew pinion shaft rotates within it.
No. This bush is only for models up to 1997 (VIN up to 405988) with the rack slew. A 2005 machine has the newer slew ring design and does not use this part.
Bronze is a material with excellent sliding properties and a low coefficient of friction. In the event of lubrication failure, the bronze "sacrifices" itself, protecting the more expensive steel pinion shaft from seizure.
Masz wątpliwości lub potrzebujesz potwierdzenia, aby uniknąć kosztownego przestoju? Zadzwoń do nas. Nasi eksperci pomogą dobrać właściwą część, aby Twój sprzęt jak najszybciej wrócił do pracy.
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