587-2888: Straight Sleeve Bearing

CAT 587-2888 is a Caterpillar steel-backed bronze straight sleeve bearing, suitable for gearboxes, drive axles, and other applications. It is used to bear radial loads and reduce friction between the shaft and housing bore. Key information is as follows:

Key Parameters
Item Details
Type: Straight sleeve bearing without grooves or holes, steel backing + bronze alloy anti-friction layer, integral structure, bears only radial loads, suitable for low-to-medium speed, medium-to-heavy load, and adequately lubricated Cat® Parts applications
Dimensions (Metric/Imperial): Inner diameter 41.28mm (1.625 inches), outer diameter 50.80mm (2.000 inches), length 31.75mm (1.250 inches), wall thickness 4.76mm, suitable for corresponding shaft diameters and housing bore sizes

Material: Steel backing (low carbon steel, tensile strength ≥450MPa) + bronze alloy (Cu-Sn-P, containing 8% tin) – 10%, Hardness HB80 – 100) Friction-reducing layer, no surface coating, relies on a lubricating oil film to reduce the coefficient of friction.

Accuracy: Inner diameter tolerance +0.010/-0.005mm, outer diameter tolerance +0.015/-0.005mm, length tolerance ±0.10mm, ensuring the fit accuracy with the shaft and seat hole, preventing loosening or jamming during operation.

Matching method: Clearance fit (d9) with the shaft, interference fit (H7) with the seat hole, suitable for positioning and operation requirements under medium and low speed conditions.

Suitable scenarios: Suitable for planetary gear shafts of gearboxes, drive axle differential half shafts, steering knuckle pins, etc., in equipment such as Cat 950H loaders, D5K bulldozers, and 312D excavators, used to support shaft rotation, reduce friction loss, and ensure smooth operation of the transmission system.

Suitable for replacement during equipment overhaul when the sleeve bearing is worn, the clearance exceeds the standard, or scratches appear on the surface, ensuring normal equipment operation.

Performance Characteristics: Steel backing + bronze alloy structure, high load-bearing capacity, capable of withstanding moderate radial loads, low coefficient of friction as low as 0.03 – 0.05 (with full lubrication), suitable for low-to-medium speed operation.

The bronze alloy anti-friction layer has good embedding and conformability, accommodating small impurities, reducing shaft and bearing wear, and extending service life.

Integrated structure, easy installation, no complex adjustments required, reducing maintenance difficulty and time.

Compatibility and Replacements:
Compatible parts: Bushings and seals (e.g., 6V-3211) compatible with corresponding shaft diameters. It is recommended to check related seals during replacement to prevent lubricant leakage from affecting bearing lubrication.

Direct Replacements: 587-2889, 587-2890, interchangeable, suitable for the same equipment and installation conditions, with performance identical to the original.