CAT 422-9529 BEARING-SLV-GD

CAT 422-9529 GD is a Caterpillar heavy-duty straight-sleeve sleeve bearing (GD indicates high quality), suitable for the hinge points of excavator/loader chassis and working devices, used to withstand low-speed heavy-duty oscillating radial loads. The following are the core information:

Core Technical Parameters
Item Details
Part Model: CAT 422-9529 (4229529) GD Straight-Sleeve Heavy-Duty Sleeve Bearing (Suitable for medium to large machine hinge points, withstands radial loads + low-speed oscillation, matching pin 422-9528)

Core Material: 20CrNiMo alloy carburized steel, surface carburized and quenched, hardness HRC 59–63, carburized layer depth 1.2–1.5 mm, 3 axial lubrication grooves in the inner bore, compatible with NLGI 2 lithium-based grease

Key Dimensions: Inner diameter 90 mm, outer diameter 110 mm, length 75 mm, wall thickness 10 mm, inner bore roundness tolerance ≤0.01 mm, mounting surface perpendicularity tolerance ≤0.02 mm
Single weight: Approx. 3.98 kg (8.77 lb)
Compatible models: CAT 336D2/336F/349F excavators (stick/linkage hinge), 966M/972M loaders (boom pin), matching seal ring 422-9530
Operating compatibility: Rated radial load 210 kN, limiting speed 500 rpm, operating temperature -40℃ to +140℃, suitable for low-speed heavy-duty oscillating conditions
Core functions and structural features:
Heavy-duty wear-resistant: Alloy carburized steel surface hardened, impact load resistance up to 250 kN, suitable for heavy-duty oscillating forces of the stick/linkage pin, service life up to 7000 hours.

Highly efficient lubrication: Three axial lubrication grooves in the inner bore ensure uniform grease distribution, with a friction coefficient f≤0.07, reducing adhesive wear between the pin and bushing.

Precise fit: The clearance with the 422-9528 pin is 0.02–0.03 mm, allowing for flexible movement without jamming and ensuring operational accuracy.

High resistance to deformation: Integral forging and precision grinding, with a wall thickness tolerance of ±0.01 mm, it is not easily deformed under heavy loads, and the mounting surface has high flatness.

Installation and maintenance points:
Installation specifications: Clean the mounting hole. The hole tolerance is +0.01–+0.02 mm. Cold press-fit with a pressing force of 18–20 kN. Do not strike the end face.

After installation, check the inner bore roundness to be ≤0.01 mm and the clearance with the pin to be 0.02–0.03 mm.

Secure with M18×1.5 bolts (grade 10.9), torque 120–125 N·m, to prevent axial movement.

Maintenance Recommendations: Check for wear, cracks, and grease leaks every 600 working hours. Replace if inner diameter wear exceeds 0.2 mm.

Add 40–50 g of NLGI 2 lithium-based grease each time, ensuring the lubrication grooves are full.

Replace the 422-9528 pin and 422-9530 seal simultaneously to ensure sealing and lubrication.