Description
CAT 587-2866 Straight Sleeve Bearing
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CAT 587-2866 is a Caterpillar straight sleeve bearing, primarily used for low-speed, heavy-duty shaft positioning and sliding support in transmissions, transfer cases, or hydraulic pumps. It is compatible with various small loaders, excavators, and construction machinery. The following is structured and precise information.
Core Parameters (Professional Version)
Item Details
Basic Attributes Model 587-2866, Straight Sleeve Bearing (without oil groove / with oil groove optional), material is bronze alloy (CuSn10Pb10) or iron-based sintered oil-impregnated alloy, used for journal support under sliding friction conditions, single unit usage 1–2 pieces (depending on the number of shaft ends)
Key Dimensions Inner diameter commonly fits 30–45 mm (specific needs to match the machine model’s journal), outer diameter fits the housing bearing seat hole, length is mostly 25–40 mm, tolerance grade ISO h6/H7, fitting clearance 0.015–0.03 mm (low speed conditions)
Performance Characteristics Suitable for low speed (≤1500 rpm), heavy load conditions, self-lubricating or oil-lubricated design, with wear-resistant, impact-resistant, and vibration-absorbing characteristics, preventing radial movement of the shaft system, the sealing groove can be equipped with O-rings to prevent leakage
Compatible Models Cat 906/907/908 Mini loaders, 301.7/302.7 mini excavators, 420/430/442 mini excavators, D3K/D4K mini bulldozers, some hydraulic pumps/transmission assemblies (e.g., 4W-0001 transmission)
Application and Installation Points
**Before installation, clean the bearing housing bore and journal, checking for burrs and rust, ensuring a surface roughness Ra ≤ 1.6 μm.**
Use cold pressing or hot mounting methods (heating the bearing to 80–100°C) to avoid impact that could cause deformation.
After installation, check the radial clearance to ensure it meets the machine’s maintenance manual requirements to prevent bearing seizure.
It is recommended to check the lubrication status every 2000 hours, replenishing grease or replacing the bearing (depending on operating conditions).
