CAT 454-7605 BEARING-ROLL

CAT 454-7605 is a Caterpillar genuine single-row cylindrical roller bearing, suitable for the planetary carrier of the swing gearbox, drive axle differential, and gearbox shafts of Cat 320D2/323D2 excavators and 966H loaders. It is used to withstand heavy radial and impact loads and limit the radial runout of the shaft. The following is pure raw data and does not include replacement parts information.

Core Technical Parameters (Raw Data)

Item Details
Basic Attributes
Model: 454-7605; Type: Single-row cylindrical roller bearing (inner ring with single flange, outer ring separable); Material: Inner ring/outer ring/rollers are chromium-molybdenum alloy steel (carburized and quenched); Cage: Stamped steel plate; Weight: 3.12 kg; Operating Temperature: -40℃ to +120℃; Rated Service: ≥18000 hours; Lubrication: Grease lubrication (recommended Cat DEO-ULS No. 2 lithium-based grease); Seal Type: Non-contact dust cover; Protection Rating: IP54; Suitable Journal Diameter: φ90 mm; Suitable Bore Diameter: φ140 mm

Key Dimensions
Inner Diameter: 90 mm (Tolerance 0/-0.018 mm); Outer Diameter: 140 mm (Tolerance 0/-0.025 mm); Width: 38 mm (Tolerance ±0.12 mm); Number of Rollers: 24; Roller Diameter: 12 mm Specifications: Roller length 32 mm, inner ring large end diameter 115 mm, outer ring small end diameter 120 mm, inner ring raceway radius of curvature 6.1 mm, outer ring raceway radius of curvature 6.2 mm, radial clearance after installation 0.03-0.06 mm
Performance parameters: Radial rated dynamic load 220 kN, radial rated static load 310 kN, limiting speed grease lubrication 2600 rpm, oil lubrication 3200 rpm, coefficient of friction ≤0.0016, hardness inner/outer ring HRC 60-64, roller HRC 62-66, elastic modulus 207 GPa, Poisson’s ratio 0.3, tensile strength ≥1250 MPa, yield strength ≥1000 MPa, impact toughness ≥20 J/cm², corrosion resistance: neutral salt spray test ≥72 Rust-free operation within hours.
Structural and performance advantages:
Separate structure: The inner ring has a single flange, and the outer ring is separable, facilitating installation and maintenance in complex cavities. Wear parts can be replaced individually, reducing maintenance costs.

Chromium-molybdenum alloy steel material: Carburized and quenched, resulting in high surface hardness and good core toughness, suitable for high-frequency vibration and heavy-load conditions in engineering machinery, reducing wear between rollers and raceways.

Non-contact dust cover: Effectively prevents dust and oil from entering the bearing, reducing the risk of grease contamination and extending bearing life.

Single-row cylindrical roller design: The rollers and raceways have line contact, providing strong load-bearing capacity, suitable for heavy radial load conditions, and ensuring the rotational accuracy and stability of the shaft.

Installation and Maintenance Points (Original Data)

Installation: Clean the journal and bearing housing bore (free of burrs/oil stains). Hot-fit the inner ring (oil temperature 80-100℃, heating time ≤40 minutes). Cold-fit the outer ring. Press-fit force ≤40 kN. After installation, check the radial clearance (0.03-0.06 mm). Tighten the nut torque to 180-200 N·m. Do not forcefully hammer or pry, as this may damage the raceway.

Maintenance: Check the bearing temperature every 1000 hours (≤80℃ is normal). Add grease every 2500 hours (1/3-1/2 of the bearing cavity volume). Replace the bearing every 18000 hours. Avoid overload operation (≤110% of rated load). Prevent high-speed idling of the bearing (≥120% of the limiting speed). Troubleshooting: Overheating of bearings is often due to insufficient lubrication or too small clearance; add grease and adjust the clearance. Abnormal noise is often due to worn rollers or peeling raceways; replace the bearing. Excessive radial runout is often due to excessive clearance; adjust the nut torque or replace the bearing.