CAT 307-1528 General Duty Straight Sleeve Bearing

CAT 307-1528 YM is a Caterpillar genuine straight-tube composite self-lubricating sleeve bearing, suitable for connecting rods and pins in excavators, loaders, and other equipment, providing low-friction support at joints. The following are precise original factory specifications and application information, excluding replacement parts (Cat®…).

Core Technical Parameters

Item Details
Part Model: CAT 307-1528 YM (Straight-tube Composite Self-lubricating Sleeve Bearing)

Material: Composite self-lubricating material (base material + solid lubricating layer), no additional drilling or grease injection required, suitable for oil-free or low-oil conditions (Cat®…)

Key Dimensions: Inner diameter 30.23 mm (1.19 in), outer diameter 40.13 mm (1.58 in), total length 45.47 mm (1.79 in)

Performance Parameters: Suitable for low-to-medium speed and medium load conditions, can withstand stable radial loads, solid lubricating layer reduces the coefficient of friction and reduces pin wear, suitable for oscillating and rotating motions of connecting rod joints

Single Weight: Approx. 0.19 kg (0.42 lbs)

Tolerances: Inner diameter tolerance 0/-0.015 mm, outer diameter tolerance 0/+0.02 mm, length tolerance ±0.1 mm, surface roughness Ra ≤ 0.8 μm

Lubrication Characteristics With its own solid lubricating layer and no bearing grease injection holes, Cat® is suitable for well-sealed connecting rod joints that are difficult to grease frequently, reducing maintenance needs.

Structure and Core Features

Composite Self-Lubricating Structure: The base material provides support strength, and the evenly distributed solid lubricating layer forms a lubricating film during joint movement, reducing friction and wear. Suitable for oil-free or low-oil conditions, reducing maintenance frequency.

Straight-Cylinder Design: Without flanges, it accommodates tight fits between connecting rods and pins, ensuring precise positioning after installation, guaranteeing flexible joint movement, and reducing jamming and misalignment.

Suitable for Multiple Working Conditions: The composite material has excellent corrosion resistance and wear resistance, suitable for harsh environments such as dusty and humid construction sites, extending the service life of joint components.

Grease Injection Hole-Free Design: No need for additional drilling for grease injection, avoiding lubrication failure caused by clogging grease injection holes, simplifying the maintenance process, and reducing maintenance costs.

Cat® Compatible Machines and Application Scenarios

Compatible Equipment: CAT 320, 325 series excavators, and 950, 966 series loaders, including their connecting rods, booms, and sticks.

Core Purpose: Installed at the joint between the connecting rod and the pin, it provides low-friction support for the joint, ensuring smooth movement of the boom, stick, and other components, reducing wear on the pins and connecting rods, and is suitable for low-to-medium speed, medium-load operating conditions.