CAT 325-6022 BEARING-SLV-GD

CAT 325-6022 (3256022) YM is a Caterpillar original single-row deep groove ball bearing for lift arm, suitable for boom/lift cylinder pivots in mini excavators, skid steer loaders, etc. The following is purely accurate information (without additional description):

Core Parameters and Information

Item Details
Part Model: CAT 325-6022 YM Single-row Deep Groove Ball Bearing for Lift Arm

Part Type: Deep groove ball bearing for boom/lift cylinder pivot, primarily bearing radial loads, suitable for low-to-medium speed, medium-to-light load lifting mechanism rotational support, balancing operation and buffering impacts

Material: High carbon chromium bearing steel (chromium-molybdenum alloy steel), inner ring, outer ring, and steel balls surface hardened, hardness HRC61-65, cage is stamped low carbon steel

Key Dimensions: Inner diameter 50.80 mm, outer diameter… 82.55 mm, width 20.64 mm, chamfer 1.5×45°, steel ball diameter 9.525 mm, number of steel balls 13

Structural Features: Single-row open structure, no sealing cover, with stamped steel cage, inner ring interference fit with shaft, outer ring clearance fit with bearing housing

Compatible Structures: Suitable for the boom and stick hinge point of mini excavators, the cylinder end of the lifting cylinder of skid steer loaders, and the boom pivot support area.

Applicable Working Conditions: Medium to low speed (≤2000 r/min), medium to light load, suitable for operating environments with temperatures from -20℃ to 100℃, grease lubrication, and slight vibration. Rated dynamic load 42 kN, rated static load 28 kN.

Compatible Models:

CAT 302.7D/303.5E/304E2 mini excavators (boom and stick hinge point, upper pivot of lifting cylinder)

CAT 242D/252D Skid Steer Loader (Boom Lifting Mechanism Pivot, Bucket Cylinder Support Bearing Housing)

CAT 202.4D Mini Excavator (Boom Cylinder Rod End Bearing, Boom to Frame Connection Point)

CAT 301.7CR Compact Excavator (Lifting Mechanism Connecting Rod Pivot, Stick Cylinder Support Area)

Installation and Fitting Points:
The inner ring and pivot are interference-fitted (interference 0.008–0.015 mm), and the outer ring and bearing housing are clearance-fitted (clearance 0.012–0.025 mm) to ensure rotational accuracy and load transfer.

Use a special sleeve to press-fit the inner ring, and gently press the outer ring into the bearing housing. Do not strike the steel balls or cage. After installation, the bearing end face should fit snugly against the locating surface without misalignment or jamming.

Before installation, clean the bearing, pivot, and bearing housing. Check the bearing for cracks, undamaged steel balls, and a deformed or broken cage.

Axial positioning is achieved via a snap ring/shoulder, while radial positioning is achieved via a bearing housing. After installation, the lifting mechanism rotates freely, with radial runout of the pivot ≤0.05 mm.

Apply lithium-based grease after installation and replenish lubrication every 1200 working hours to ensure smooth operation.