CAT 094-8572 RETAIN UPPER

CAT 094-8572 (0948572) is a dedicated upper retainer for Caterpillar hydraulic pump/slewing motor bearing cavities. It locks the spring base to the bearing assembly, preventing axial and radial movement. It is compatible with the power transmission systems of medium to large-sized equipment such as 349/352/374 excavators and 982/988 loaders, ensuring stable bearing preload and reliable sealing.

Core Parameters

Item Details
Part Model CAT 094-8572 (0948572) Upper Fixture

Type Axial locking fixture on the upper side of the bearing cavity, anti-slip, pre-tightening, vibration damping

Material 42CrMo alloy steel, tempered + blackened surface oxidation + galvanized, hardness HRC38-42, tensile strength ≥1080MPa, impact resistant, corrosion resistant

Key Dimensions Inner diameter approx. 175mm, outer diameter approx. 205mm, thickness approx. 28mm, bolt hole distribution circle diameter approx. 185mm, single weight approx. 3.5kg

Compatible Models CAT 349, 352, 374 excavators, 982, 988 loaders, hydraulic pumps and swing motors compatible with C13/C15 engines

Matching Relationships Matching spring base (094-8233), retainer (094-8432), bearing, and lower retaining ring (094-7732), this device is installed above the spring base for axial locking, suppressing vibration.

Suitable for: Top of hydraulic pump bearing housing, inside of rotary motor end cover. Installed above the spring base, it is locked with bolts to prevent axial movement of the bearing and spring base, ensuring stable preload and sealing effect, and preventing oil leakage and bearing wear.

Application scenarios: Heavy-duty and severe vibration conditions such as mining and large-scale earthmoving operations. Suitable for medium and large-scale equipment power systems, extending bearing life and reducing maintenance frequency.

Core functions: Provides high-strength axial locking, counteracts impact loads, prevents axial movement and radial displacement of the bearing, protects seals and spring base, extends component life, and reduces the risk of failure.

Installation and Maintenance Points

Installation: Clean the mounting surface and threaded holes. Apply CAT-specific anti-loosening adhesive. Tighten in 2-3 steps diagonally to the specified torque (approximately 450-500 N·m), ensuring a tight fit without gaps. After fixing, check for axial movement and radial displacement.

Maintenance: Check the tightness and coating integrity every 300 hours. If loose, immediately retighten and reapply anti-loosening adhesive. Regularly check for abnormal noises and temperatures in related components; disassemble and repair if abnormalities are found.

Replacement: Prioritize original parts. Verify the model and dimensions. After installation, test the power system to ensure it operates normally, without abnormal noises, leaks, or loosening.