CAT 396-0664 CAP-BRG-GD

CAT 396-0664 (3960664) is a Caterpillar genuine YM pin assembly, used for positioning and force transmission in articulated/drive systems of construction machinery. The following is purely precise information (without additional description):

Core Parameters and Information

Item Details
Part Model: CAT 396-0664 YM Pin Assembly (with dust ring + thrust washer, single-threaded positioning)

Part Type: Heavy-duty articulated pin, used for rotational positioning and load transmission in boom/stick/connecting rod/rocker arm, etc., bearing radial + axial combined loads

Material: 40Cr alloy steel, integral forging, surface medium-frequency quenching (hardness HRC50-55), phosphating + blackening treatment, core hardness HB240-280, suitable for operating conditions from -40℃ to 120℃

Key Dimensions: Pin diameter 45.00 mm (1.7717 in), total length 180.00 mm (7.0866 in). (in), mating section length 120.00 mm, thread specification M16×1.5, thrust washer diameter 55.00 mm, dust seal inner diameter 45.00 mm, coaxiality ≤0.01 mm, end face runout ≤0.01 mm, surface roughness Ra≤0.8 μm

Structural Features: Integrated design of single-start thread + thrust washer + dust seal, central oil passage through, lubrication interfaces at both ends, suitable for clearance fit, ensuring flexible rotation of the hinged parts and preventing mud and sand intrusion.

Compatible Structures: Excavator boom – stick hinge pin, loader rocker arm – connecting rod pin, road roller steering knuckle pin, compatible with 607-9703 sleeve bearing / 385-3798 sleeve.

Applicable Working Conditions: Suitable for maximum radial load 120 kN, axial load 30 kN, speed ≤100 RPM, swing angle ≤ ±30°, intermittent impact on the articulated parts of construction machinery.
Compatible Models and Assemblies:
Excavators: CAT 307.5, 308.5 (boom-stick articulation pin assembly, stick-bucket pin assembly)
Loaders: CAT 903, 904 (rocker arm-connecting rod pin assembly, boom cylinder lug pin assembly)
Mini road rollers: CAT CB24, CB34 (steering knuckle pin assembly, vibratory boom articulation pin assembly)
Compatible Assemblies: 307.5 boom-stick articulation pin assembly, 903 rocker arm-connecting rod pin assembly, CB24 steering knuckle pin assembly
Installation and Fitting Points: Before installation, clean the pins, seat holes, and matching bearings. Check for cracks in the pins, damage to the threads, aging of the dust seals, and unobstructed oil passages.

The clearance between the pin and bearing should be 0.040-0.080 mm, the clearance between the thrust washer and the end face should be 0.10-0.20 mm, and the thread preload torque should be 80 N·m, tightened evenly in 2-3 stages.

After installation, radial runout should be ≤0.02 mm, with no jamming or abnormal noise during oscillation. The lubrication pressure should be 1.5-2.5 MPa, and the oil passage should be aligned with the bearing oil groove.

Use a dedicated puller for disassembly, avoiding hammering to prevent pin deformation and seat hole damage. Before reuse, check the surface wear (replace if >0.10 mm).