CAT 094-8831 RETAINER

CAT 094-8831 (0948831) is a dedicated axial retainer for Caterpillar hydraulic pump/slewing motor bearing cavities. It is used to lock the spring base to the bearing assembly, and is suitable for medium to large-sized equipment such as 349/352/374 excavators and 982/988 loaders. It prevents axial movement and radial displacement, ensuring stable preload and reliable sealing.

Core Parameters

Item Details
Part Model: CAT 094-8831 (0948831) Axial Fixture

Type: Axial locking fixture for bearing cavity, anti-movement, pre-tightening, vibration reduction

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

Key Dimensions: Inner diameter approx. 182mm, outer diameter approx. 212mm, thickness approx. 32mm, bolt hole distribution circle diameter approx. 192mm, single weight approx. 3.9kg

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

Matching Relationships This product is compatible with spring bases (094-8233), retainers (094-8432/094-8572), bearings, and lower retaining rings (094-7732). It is installed above the spring base for axial locking, suppressing vibration.

**Compatibility and Applications:** Suitable for the top of hydraulic pump bearing housings and the inside of rotary motor end covers. Installed above the spring base, it is locked with bolts to prevent axial movement between the bearing and spring base, ensuring stable preload and sealing effect, and preventing oil leakage and bearing wear.

**Application Scenarios:** Suitable for heavy-duty, high-vibration conditions such as mining and large-scale earthmoving operations. It is suitable for medium to large-scale equipment power systems, extending bearing life and reducing maintenance frequency.

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

**Adaptation and Applications:** Suitable for heavy-duty, high-vibration conditions such as mining and large-scale earthmoving operations. It is compatible with medium to large-scale equipment power systems, extending bearing life and reducing maintenance frequency. 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 500-550 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.