CAT 442-5035 BEARING

CAT 442-5035 is a Caterpillar single-row cylindrical roller bearing, commonly used in the gearboxes, drive axles, or transfer cases of loaders/excavators. It is compatible with models such as the 950M/962M loader and the 320GC excavator, and is designed for heavy-duty radial loads and high-speed rotary guidance, ensuring stable and efficient operation of the transmission system. The following is the core information:

Core Technical Parameters
Item Details
Part Model CAT 442-5035 (4425035) Single-row cylindrical roller bearing, separable inner/outer ring design, suitable for shaft diameter 45mm, used for radial heavy-duty support and rotary guidance in transmission systems

Material Bearing steel (GCr15SiMn), carburized and quenched HRC 60-64, cage is stamped steel plate/brass, suitable for operating conditions from -40℃ to 120℃, resistant to mineral oil and grease corrosion

Key Dimensions Inner diameter 45mm, outer diameter 85mm, width 23mm, roller diameter 4mm, quantity 16 pieces, single weight approximately 0.42kg, suitable for mounting positions with shaft diameter 45mm and mounting hole diameter 85mm

Compatible Models CAT 950M/962M/972M loaders, 320GC/330GC excavators, 988K This machine is suitable for mining loaders, 140M graders, D11T bulldozers, etc., and is compatible with gearbox gear sets, drive axle differentials, transfer case input shafts, etc. Operating pressure ≤40MPa.

Performance Parameters: Radial rated dynamic load ≥68kN, radial rated static load ≥82kN, limiting speed 4000rpm (grease lubrication)/5000rpm (oil lubrication), clearance 0.02-0.05mm, suitable for high-frequency rotation and radial impact conditions.

Core Functions and Structural Features:

Heavy-duty radial support: Rollers and raceways have line contact, large contact area, suitable for gearbox gear sets, drive axle differentials, and other radially heavy-duty components, withstanding instantaneous impact loads ≥120kN, ensuring stable shaft rotation without runout.

High-speed compatibility: Separable inner/outer ring design for easy installation, suitable for high-speed rotation of transmission systems, transmission efficiency ≥98%, reducing power loss, suitable for speeds ≤4000rpm.

Wear-resistant and fatigue-resistant: Precision ground bearing steel + special heat treatment, surface roughness Ra≤0.4μm, suitable for long-term high-frequency rotation conditions, service life≥10000 working hours.

Installation and compatibility: Interference fit installation (interference between mounting hole and bearing outer diameter 0.02-0.04mm), can be assembled by cold fitting (-20℃) or press fitting (pressure ≤8kN), suitable for shaft axial displacement compensation requirements.