CAT 442-3587 95mm Inner Diameter Tapered Bearing

CAT 442-3587 is a Caterpillar genuine single-row tapered roller bearing (complete assembly, including inner ring/outer ring/rollers/cage), suitable for the gearbox axle and drive axle differential of Cat 242D/252D skid steer loaders and 305.5E2 mini excavators. Its core function is to withstand radial and bidirectional axial combined loads, ensuring stable operation of the transmission system. The following is complete professional information:

Core Technical Parameters (Professional Version)

Item Details
Basic Attributes
Model: 442-3587, Type: Single-row tapered roller bearing (complete assembly, with inner ring/outer ring/rollers/cage), Suitable for Cat 242D/252D skid steer loader gearbox axle and 305.5E2 excavator drive axle differential, Material: High carbon chromium bearing steel (GCr15SiMn, integrally hardened), Inner diameter: φ65 mm, Outer diameter: φ110 mm, Width: 22 mm mm, single weight approximately 1.8 kg, rated radial load 45 kN, axial load 18 kN, operating temperature -40℃ to +120℃, suitable shaft speed ≤3000 rpm, suitable bearing housing bore tolerance H7

Key Dimensions: Inner diameter tolerance 0/-0.015 mm, outer diameter tolerance +0.020/-0.010 mm, width tolerance ±0.1 mm, raceway cone angle 12°30′, raceway surface roughness Ra≤0.4 μm, end chamfer 1.5×45°, coaxiality ≤0.03 mm, axial clearance 0.025-0.035 mm, suitable journal diameter φ65 mm (tolerance f7), bearing housing bore inner diameter ≥110 mm, depth ≥22 mm

Material and Manufacturing Process: Inner ring/outer ring material GCr15SiMn (hardness HRC after quenching) 60-64), raceway surface hardened layer depth 2.0-2.5 mm, core hardness HRC 30-35, roller material GCr15 (hardness HRC 62-66), cage made of stamped steel plate (galvanized for corrosion protection), 12 rollers, roller diameter φ8 mm. Compatible with Cat 242D/252D skid steer loaders (serial number JCB1000-UP) gearbox second shaft tapered roller bearings and 305.5E2 excavators (serial number JZH1000-UP) drive axle differential tapered roller bearings. Used with 205-4137 bearing outer ring and 8R-4145 sleeve sheath for supporting gearbox input/output shafts and drive axle differential shafts, bearing radial + axial combined loads. Assembly fit: Outer ring and bearing housing bore interference fit (interference 0.010-0.015). The inner ring should have an interference fit with the shaft (0.015-0.020 mm). Rear end face runout should be ≤0.05 mm, radial runout ≤0.1 mm, and the raceway contact marks should be uniform with no localized stress concentration.

Installation and Maintenance Points:

Before installation, clean the bearing housing bore and journal. Check the bearing for rust and raceway damage. Use a dedicated press-fit tool to smoothly press it in. Do not strike the inner/outer ring end faces to prevent raceway deformation.

After installation, adjust the axial clearance to 0.025-0.035 mm. Add Cat-specific extreme pressure grease (NLGI grade 2) every 800 hours to ensure adequate lubrication of the rollers.

Maintenance Recommendations: Replace the bearing immediately if the raceway wear is >0.15 mm or cracks appear on the surface. Avoid heavy load impacts that could cause raceway spalling. Regularly check the bearing housing bore sealing to prevent impurities from entering and accelerating wear.