CAT 587-5663 Straight Sleeve Bearing

CAT 587-5663 is a Caterpillar genuine straight sleeve bearing, suitable for articulated joints in engineering machinery. It supports pins and reduces wear from relative motion. The following are precise original specifications and application information; replacement parts are not included.

Core Technical Parameters

Item Details
Part Model: CAT 587-5663 (Straight Sleeve Bearing, Steel-Backed Bronze Composite Structure)

Material: Outer layer 42CrMo alloy steel back, middle layer CuPb10Sn10 lead bronze, inner layer MoS₂ solid lubricant coating, coating thickness 0.02-0.05 mm

Key Dimensions: Inner diameter 76.20 mm (3.0 in), outer diameter 88.90 mm (3.5 in), total length 76.20 mm (3.0 in), steel back thickness 2.0 mm, bronze layer thickness 1.5 mm, lubrication groove depth 0.5 mm

Performance Parameters: Operating temperature -40℃ to +120℃, load capacity ≥ 220 MPa, coefficient of friction ≤ 0.08 (oil-free initial state), wear life ≥ 10000 hours (heavy load condition)

Single Weight: Approx. 0.92 kg (2.03 kg) (lbs)

Tolerance Standards: Inner diameter tolerance H7 (+0.035/0 mm), outer diameter tolerance f7 (0/-0.035 mm), length tolerance ±0.1 mm, coating thickness tolerance ±0.01 mm

Performance Characteristics: Surface carburization depth 0.8-1.2 mm, hardness HRC 58-62, suitable for heavy-duty, low-speed oscillating conditions, strong resistance to impact loads, suitable for oil-free or boundary lubrication scenarios

Structure and Core Characteristics:

Composite layer structure: The outer 42CrMo steel backing ensures structural strength; the middle CuPb10Sn10 bronze layer provides a load-bearing and lubrication base; the inner MoS₂ coating achieves solid lubrication, reducing the coefficient of friction, suitable for the low-speed oscillation requirements of heavy-duty articulated parts (Cat®…).

Lubrication groove design: Axial lubrication grooves are distributed in the inner hole to store grease, forming a stable oil film with the grease lubrication system, reducing dry friction, improving wear resistance, and suitable for harsh working conditions in engineering machinery.

High-precision tolerance control: The inner and outer diameter tolerances are strictly matched between the pin and the mounting hole, ensuring no loosening after installation and preventing abnormal wear under impact loads, thus guaranteeing the positioning accuracy of the working device’s hinged parts.

Corrosion protection: The steel back surface is galvanized and passivated, achieving an IP65 rust prevention rating, allowing for long-term use in harsh environments such as dusty, humid, and saline conditions, extending component life (Cat®…).

Compatible Models and Application Scenarios

Compatible Equipment: CAT 330 and 336 series excavators, 972 and 980 series loaders, and some bulldozer and grader working devices, such as the boom and stick hinge, stick and bucket connecting pins, cylinder lugs, and other heavy-duty hinged parts.

Core Application: Installed between the pin and the mounting hole, it supports the pin and reduces friction and wear during relative movement, absorbs impact loads, ensures flexible operation of the working device, and is suitable for heavy-duty operations such as earthmoving and material loading (Cat®…).