CAT 584-5121 BEARING-SLV-GD

CAT 584-5121 YM is a straight-tube sleeve bearing (without flange) for Caterpillar construction machinery, suitable for articulated parts such as booms, sticks, and connecting rods. The following is raw data only and does not include replacement parts information for Cat®…

Core Technical Parameters (Raw Data)

Item Details
Basic Attributes Model 584-5121 YM, Type: Straight Sleeve Bearing, Material: Low Alloy Carbon Steel (4130) + Non-metallic Wear-resistant Coating, Single Weight: 0.92 kg (2.03 lbs), Operating Temperature: -40℃ to +120℃, Radial Load Capacity: ≥80 kN, Surface Treatment: Carburizing and Quenching + Coating, Hardness: HRC 58-62, Coating Thickness: 0.15-0.20 mm, Corrosion Resistance: ≥96 hours Salt Spray Cat®…

Key Dimensions (Metric / Imperial): Inner Diameter: 40.00 mm (1.5748 in), Outer Diameter: 48.00 mm (1.8898 in), Overall Length: 50.00 mm (1.9685 in), Inner Diameter Tolerance: +0.010/-0.005 mm, Outer Diameter Tolerance: + 0.020/-0.010 mm, length tolerance + 0.10/-0.08 mm, roundness ≤0.012 mm, surface roughness Ra≤0.4 μmCat® …

Performance Parameters: Compatible shaft diameter 40.00 mm (k6 tolerance), compatible bore diameter 48.00 mm (H7 tolerance), radial clearance 0.03-0.05 mm, maximum permissible sliding speed 1.2 m/s, coefficient of friction ≤0.12 (lubricated condition), rated life ≥8000 hours (standard operating conditions)

Structure and Compatibility Characteristics: Dual-material composite structure: Steel substrate ensures strength and rigidity, non-metallic coating reduces friction, provides wear resistance and self-lubrication, suitable for frequent oscillation and heavy-duty conditions.

Optimized Lubrication Design: The inner wall has axial lubrication grooves and circumferential lubrication holes for easy uniform grease distribution, suitable for dusty and humid outdoor operating environments.

High-precision fit: Strict dimensional tolerances, compatible with genuine Cat pins, reducing clearance and vibration, improving operating accuracy and component lifespan.

Compatible Models and Applications

Excavators: Boom-stick hinges and stick-bucket pins, such as 320GC and 323D2, suitable for frequent swinging and impact load conditions.

Loaders: Rocker arm and connecting rod hinges, such as 938M and 950M, suitable for heavy-duty and frequent start-stop operations.

Bulldozers: Balance beam and connecting rod hinges, such as D6K and D7G, suitable for load transfer requirements during traction and steering.

Installation and Maintenance Points (Original Data)

Installation: Clean bearings, pins, and mounting holes, ensuring no oil stains or metal shavings. Inspect for cracks, deformation, and dimensional compliance.

Cold press-fit, pressing force ≤ 50 kN, shaft and bearing interference fit 0.015-0.030 mm. After installation, the bearing end face should fit snugly against the mounting seat without clearance. Fill with NLGI Grade 2 lithium-based grease, filling to half the bearing cavity. Top-lubrication is required after initial installation.

Maintenance: Check radial clearance every 500 hours. Replace immediately if clearance > 0.15 mm.

Top-lubricate every 1000 hours. Under severe operating conditions, reduce this to 400 hours per application to avoid dry friction.