CAT 135-9943 88.9mm Outer Diameter Internal Tension Bushing

CAT 135-9943 is a Caterpillar genuine 88.9mm outer diameter internal tension bushing, used for shaft hole positioning and anti-loosening in components such as machine frames. It is suitable for construction machinery such as paving compactors and allows for easy installation and stable fit through elastic contraction and expansion. The following are the key information.

Core Technical Parameters

Item Details
Part Model: CAT 135-9943 (Internal Tension Bushing, Single Piece)

Material: Hardened and tempered spring steel strip, excellent elasticity, wear-resistant, surface rust-proof treatment

Key Dimensions: Outer diameter 88.9mm, inner diameter adapted to corresponding shaft diameter, length adaptable as needed, with slotted structure for easy compression and expansion

Compatible Models: CS-563C, CP-533C, CS-573C, CP-563C, etc., paving compactors, used for fixing frame holes

Performance Characteristics: Insertion force is lower than solid bushings, installation does not damage the hole or shaft surface, can compensate for hole and shaft tolerances within a certain range, good anti-loosening effect, suitable for vibration conditions

Structure and Core Functions:

Elastic Positioning and Anti-Loosening: Slotted hollow cylindrical design, compressible and expandable, tightly fits the hole wall and shaft after installation, preventing loosening, suitable for long-term use in vibration environments.

Easy Installation: No complex tools are required; assembly is completed solely through its elasticity, reducing construction and maintenance difficulty while preventing damage to the hole and shaft surfaces during installation.

Tolerance Compensation: The elastic properties compensate for manufacturing or wear tolerances of the hole and shaft, maintaining stable fit accuracy, ensuring accurate component positioning, and reducing abnormal wear and noise.

Suitable Scenarios and Installation/Maintenance Points

Suitable Scenarios: Primarily used in the frames of construction machinery such as road compactors, providing positioning and anti-loosening functions for the shaft and hole fit. It can also be used for other shaft and hole locations requiring elastic positioning.

Installation Specifications: Clean the mounting hole and shaft surface, ensuring it is free of burrs, oil, and rust, and that the mounting surface is flat.

Use a special tool to smoothly press the bushing into the hole, utilizing its elasticity to achieve a tight fit. Avoid forceful impacts that could deform or damage the bushing.

After installation, check the fit clearance to ensure the shaft rotates or is positioned smoothly within the bushing without jamming.

Maintenance Recommendations: Regularly inspect the bushing mounting area for looseness, abnormal noise, or abnormal wear. Replace any problematic bushings promptly.

If the equipment is in harsh working conditions for a long time (such as high vibration and high dust), the inspection cycle should be shortened and the bushing should be replaced in advance if necessary to prevent component failure.