CAT 009-2731 RETAINER A

CAT 009-2731 is a Caterpillar genuine spherical plain bearing axial retainer assembly (pure original factory information, no additional description):

Core Parameters and Information

Item Details
Part Model: CAT 009-2731 (0092731) Retainer Assembly (Spherical Plain Bearing Axial Positioning Locking Assembly)

Part Type: Double-ear shaft end retaining clamp, used to lock the axial displacement of spherical plain bearings/bushings, preventing vibration-induced loosening, suitable for single/double-ear trunnions

Material: Clamp body (65Mn spring steel, hardened HRC42-48), locking bolt (12.9 grade alloy structural steel), washer (304 stainless steel)

Key Dimensions: Suitable shaft diameter 35 mm, clamp inner diameter 35 mm, opening width 8 mm, clamp thickness 5 mm, mounting hole spacing 40 mm, bolt specification M8×25 mm

Structural Features: Symmetrical double ears + single bolt locking, built-in arc-shaped anti-slip teeth (tooth height 0.3) (mm), with positioning steps, compatible with 009-2039 trunnion shaft end

Surface treatment: Galvanized and color-passivated clamp body, blackened bolts, natural color washer

Matching method: Clearance fit with trunnion shaft end (D11/h11, clearance 0.08-0.12 mm), anti-slip teeth embedded in the trunnion surface after bolt pre-tightening

Rated load: Axial locking force 18 kN, allowable vibration frequency 5 Hz, compatible maximum swing angle ±15°

Operating temperature: -40℃ ～ +120℃

Weight: 0.12 kg

Compatible models and assemblies

Compatible equipment: CAT 301.7CR/302.7CR excavators, 242D/272D skid steer loaders

Compatible assemblies: Boom-stick hinge, bucket cylinder lower hinge point, compatible with 009-2039 trunnion, 008-3053/3054 Spherical plain bearing, 008-3178 inner ring for use with.

Matching parts: 009-2731 retainer assembly, M8×25 bolts, flat washers, lock nuts, cotter pins.

Installation and maintenance points:

Clean the clamp and trunnion shaft end, removing oil and burrs, ensuring the anti-slip teeth are undamaged.

Fit the clamp onto the trunnion shaft end positioning step, aligning it with the mounting hole. Insert the bolt and pre-tighten to 18 N·m, checking for a tight fit between the clamp and trunnion.

Post-installation inspection: No jamming during swinging, axial movement ≤0.05 mm, bolts not loose.

Maintenance: Retighten the bolts to standard torque every 1000 working hours. Replace the clamp if it is deformed or the anti-slip teeth are worn.