CAT 032-8972 RING

CAT 032-8972 is a Caterpillar genuine axle locating ring (purely genuine and accurate information, no additional description). It is compatible with 031-4784 bearings, 032-4888 end caps, and 032-8014 elastic retaining rings. It is used for axial positioning and clearance compensation of bearings on excavators/loaders, etc., and is compatible with 031-4772/031-4773 retainers and 030-3328 bushings (Cat®)…

Core Parameters and Information

Project Details
Part Model: CAT 032-8972 (0328972) Shaft Locating Ring (Shaft Locating Spacer)

Part Type: Rigid shaft locating ring, used for axial positioning between bearings and end caps, eliminating axial clearance and preventing part movement.

Material: 45# steel (quenched and tempered, HB220-250), elastic modulus 206 GPa, yield strength ≥355 MPa

Key Dimensions: Inner diameter 52 mm (fits to journal, H7/h6 fit), outer diameter 65 mm (less than the inner diameter of bearing 031-4784), thickness 5 mm, locating step width 2 mm, height 1 mm

Structural Features: With axial locating step (fits against bearing end face), inner hole with 1:50 taper (for easy installation guidance), deburred edges, no notches

Surface Treatment: Blackening + anti-rust oil, salt spray test ≥48 hours; surface roughness Ra≤1.6 μm, reducing friction

Matching method: Clearance fit with journal H7/h6 (clearance 0.01-0.03 mm), positioned by contact with bearings and end covers at both end faces, with no axial loosening

Working performance: Operating temperature -40℃ ～ +150℃, applicable shaft speed ≤3000 r/min, axial load ≤10 kN

Weight: 0.05 kg (single piece)

Compatible models and assemblies

Compatible parts: CAT 031-4784 bearing, CAT 032-4888 end cover, CAT 032-8014 elastic retaining ring, CAT 031-4772/031-4773 retainer, CAT 030-3328 bushing

Compatible equipment: CAT 515/525 wheeled timber harvester, D7E/D7E LGP bulldozer, 583T/587T Pipe Laying Machine Transmission System and Traveling Mechanism Shaft System

Supporting Parts: 032-8972 Positioning Ring, 031-4784 Bearing, 032-4888 End Cap, 032-8014 Elastic Retaining Ring, 031-4772/031-4773 Fixing Device, 030-3328 Bushing

Installation and Maintenance Points

After installing the bearing and fixing device, align the taper of the inner hole of the 032-8972 positioning ring with the journal and gently push it to the bearing end face, ensuring the positioning step fits snugly against the bearing.

After installing the end cap, install the 032-8014 elastic retaining ring, ensuring the retaining ring is properly seated in the shaft groove and that the positioning ring does not move axially.

After installation, check that the axial clearance is ≤0.05 mm, and that the positioning ring is free from deformation, cracks, and scratches.

Maintenance: Check every 1000 working hours. Replace the locating ring if it is deformed, worn (thickness wear > 0.1 mm) or has surface corrosion. At the same time, check the condition of the journal and bearing.