CAT 542-1302 BEARING-NEED

CAT 542-1302 is a Caterpillar genuine stamped outer ring full complement needle roller bearing, suitable for high-speed, light-load rotating parts in engineering machinery gearboxes, drive axles, or hydraulic pumps, used for radial load support and positioning. The following is pure raw data and does not include replacement parts information for Cat®…

Core Technical Parameters (Raw Data)

Item Details
Basic Attributes
Model 542-1302, Type: Stamped outer ring full complement needle roller bearing (no inner ring, journal surface hardening required), suitable for gearbox gear shafts, drive axle half shafts, hydraulic pump drive shafts, single weight 0.48 kg, operating temperature -40℃ to +120℃, suitable for anti-wear hydraulic oil and extreme pressure lithium-based grease, used for high-speed light-load rotating bearings, reducing radial friction and improving transmission efficiency.

Key Dimensions (Metric/Imperial)
Inner diameter 75.0 mm (2.953 in, journal tolerance f7), outer diameter 90.0 mm (3.543 in, tolerance ±0.03 mm), width 25.0 mm (0.984 in, tolerance ±0.10 mm), needle roller diameter 3.0 mm, number of needle rollers 24, stamped outer ring thickness 1.5 mm, chamfer at both ends 1×45°, bearing housing fit tolerance. H7 Performance Parameters: Outer ring tensile strength ≥450 MPa, needle roller hardness HRC 62-65, radial clearance 0.02-0.05 mm, coefficient of friction ≤0.08, radial load capacity ≥180 MPa, suitable speed ≤5000 rpm, wear life ≥6000 hours, resistant to corrosion from engineering machinery transmission oil and grease.

Structure and Fitting Characteristics: High rigidity and compact structure: Lightweight stamped outer ring design, full complement needle rollers provide uniform radial load, no inner ring structure reduces installation space, suitable for compact mounting positions such as gearbox gear shafts and hydraulic pump drive shafts, meeting the rigid support requirements under high-speed rotation.

Journal Fitting Requirements: Must be used with surface-hardened (HRC 58-62) journals, journal surface roughness Ra≤0.8 μm, to ensure the fitting accuracy between the needle rollers and the journal and avoid premature wear.

High-speed, light-load adaptability: Small diameter and numerous needle rollers make it suitable for high-speed, light-load conditions. It can withstand high-frequency radial impacts and is compatible with the rotational positioning requirements of gearbox shifting mechanisms, drive axle differentials, and other components.

Installation and maintenance points (raw data)

Installation: Clean the bearing outer ring and bearing housing bore (free of oil and metal shavings). Install using a cold-pressing method with a pressing force ≤80 kN, ensuring the bearing end face fits snugly against the stepped surface of the bearing housing bore. The clearance between the journal and the bearing should be 0.02-0.05 mm, and the coaxiality ≤0.04 mm.

Maintenance: Check the wear of the bearing needle rollers and the surface condition of the journal every 1200 hours. Replace immediately if needle roller wear ≥0.3 mm or outer ring deformation. For long-term storage, apply anti-rust oil to the bearing surface and seal to prevent corrosion.