CAT 132-6349 RETAINER

CAT 132-6349 is a spring-loaded cylindrical pin retainer (also known as a spring pin retainer) commonly used in Caterpillar construction machinery. It is used for axial anti-loosening positioning of connecting parts such as pins and bolts, and is suitable for low-to-medium speed and low-to-medium load conditions. The following is the original data and does not include information on replacement parts.

Core Technical Parameters (Raw Data)

Item Details
Basic Attributes Model 132-6349, Type: Flexible Cylindrical Pin Holder, Material: 65Mn Spring Steel, Single Weight: 0.042 kg (0.093 lbs), Working Temperature: -40℃ to +150℃, Shear Strength: ≥900 MPa, Surface Treatment: Zinc Plating and Passivation, Corrosion Resistance: ≥96 hours Salt Spray, Hardness: HRC 42-48, Elastic Modulus: 206 GPa, Coefficient of Thermal Expansion: 12.2×10^-6/℃

Key Dimensions (Metric/Imperial): Outer Diameter: 12.7 mm (0.500 in), Inner Diameter: 10.5 mm (0.413 in), Length: 38.1 mm (1.500 in), Groove Width: 2 mm, Chamfer: C1 mm, Pin Tolerance: +0.015/-0.008 mm, Length Tolerance: + 0.10/-0.05 mm, Straightness ≤0.02 mm, Surface Roughness Ra≤1.6 μm

Performance Parameters: Maximum preload 8 kN, Fitting bore diameter 12.7 mm (H7 tolerance), Fitting shaft diameter 10.5 mm, Installation interference 0.15-0.25 mm, Number of repeated disassembly/reassembly cycles ≤5, Breaking load ≥12 kN

Structure and Fitting Characteristics:

Elastic anti-loosening structure: Utilizes a slotted design with 65Mn spring steel. After installation, it generates radial preload based on its own elasticity, preventing axial movement and loosening of pins, bolts, etc., under vibration conditions. Suitable for the positioning requirements of articulated parts and transmission components in construction machinery.

High versatility: Suitable for pin positioning in Caterpillar excavators, loaders, etc., such as stick and boom linkage pins, as well as anti-loosening fixing of some bolts. Installation is done by pressing in with a special tool, requiring no additional fasteners, and disassembly is convenient.

High-precision fit: High dimensional accuracy and small clearance between the fitting hole diameter and shaft diameter effectively ensure the positioning accuracy of the connecting parts, reducing component wear and failure caused by loosening.

Compatible Models and Application Scenarios:

Excavators: Positioning of stick pins and boom linkage pins for models such as 320D2, 323D2, and 336D2, suitable for vibration and impact conditions during excavation.

Loaders: Positioning of steering arm pins and boom linkage pins for models such as 950K and 966K, suitable for frequent material loading and unloading operations.

Others: Fitting of working device pins for some Caterpillar graders and bulldozers, suitable for high-intensity operation requirements under harsh conditions.