CAT 1P-0015 BEARING A

The CAT 1P-0015 is a Caterpillar crankshaft front seal bearing assembly, integrating a double-row angular contact ball bearing, a double-lip oil seal, and a dust seal ring. It is used at the front end of the crankshaft in equipment such as C15/C18 engines, 777 mining trucks, and 988K loaders. It provides radial positioning, axial anti-migration, and rotary sealing, and is suitable for heavy-duty conditions with speeds ≤3000rpm, ensuring stable engine power output and zero oil leakage. The following is the core information:

Core Technical Parameters
Item Details
Part Model CAT 1P-0015 (1P0015) Crankshaft Front Oil Seal Bearing Assembly, compatible with crankshaft front diameter 75mm, integrating bearing + oil seal + retaining ring, used for engine crankshaft front positioning and sealing

Material
Bearing: GCr15SiMn bearing steel, carburized and quenched HRC60-64; Oil Seal: Fluororubber (FKM), resistant to -30℃ to 150℃; Retaining Ring: 65Mn spring steel, galvanized and passivated surface, oil-resistant and anti-aging

Key Dimensions
Bearing Inner Diameter 75.5mm, Outer Diameter 130mm, Width 42mm; Oil Seal Inner Diameter 75mm, Outer Diameter 130mm, Lip Diameter 74.8mm; Retaining Ring Inner Diameter 75mm, Outer Diameter 100mm, Thickness 5mm; Single Weight Approx. 2.8kg (6.17lbs)

Compatible Models CAT C15/C18 diesel engines, 777F/777G mining trucks, 988K/988H loaders, 793F mining dump trucks, D11T bulldozers, etc., suitable for crankshaft output power ≤750kW.

Performance Parameters: Radial rated dynamic load ≥120kN, axial load ≥40kN, limiting speed 3000rpm, sealing rating IP67, suitable for crankshaft radial runout ≤0.05mm, oil leakage ≤0.1g/h.

Core Functions and Structural Features:
Positioning and Anti-migration: Double-row angular contact ball bearings achieve radial positioning of the crankshaft, axial load suppresses crankshaft runout, ensuring synchronization of valve timing and transmission system, suitable for Cat engines with explosion pressure ≤20MPa.

**Sealing and Leak-Proof:** Double-lip oil seal + dustproof retainer ring provide dual protection. The inner lip prevents oil leakage, while the outer lip blocks dust and mud from entering. Suitable for engine oil pressures of 0.2-0.6MPa, ensuring a reliable crankcase seal (Cat).

**Wear-Resistant and Fatigue-Resistant:** Precision-ground bearing steel with specialized heat treatment, achieving a surface roughness Ra≤0.2μm. Suitable for long-term high-frequency rotation, with a service life ≥12000 operating hours, reducing downtime for maintenance.

**Integrated Design:** Bearings, oil seals, and retainer rings are pre-installed as a single unit, requiring no additional adjustment during installation. Bolt fixing (6×M12 bolts, torque 50-60N・m) facilitates quick replacement and maintenance.

**Installation and Maintenance Points:**
**Installation Specifications:** Clean the crankshaft front journal, mounting surface, and 1P-0015 inner hole to remove oil, metal shavings, and burrs. Check that the journal roundness is ≤0.02mm and that the surface is free of scratches and rust.

** Use a specialized press to smoothly press the component into the mounting position, ensuring the bearing end face fits snugly against the crankshaft front end face without tilting. After installation, check the crankshaft’s rotational flexibility for any jamming, and ensure the radial runout of the adapter pulley is ≤0.1mm.

After installation, add engine oil (API CJ-4 grade), start the engine and let it idle for 5 minutes. Check for leaks at the oil seal and for any abnormal noises from the bearing.

Maintenance Recommendations: Check the component’s tightness every 5000 working hours. If bolts are loose, retighten them to the specified torque. Replace the component immediately if the oil seal lip is aged or cracked.

Simultaneously check the crankshaft journal wear. When the journal wear is ≥0.1mm, replace it along with component 1P-0015 to ensure proper fit and sealing performance.