CAT 504-4246 SLEEVE

CAT 504-4246 is a Caterpillar original equipment manufacturer (OEM) steel sleeve for positioning and guiding. It is suitable for articulated or transmission parts in excavators, loaders, and other equipment. It is used to fix pins, withstand radial loads, and ensure component coaxiality. The following is pure original data and does not include replacement parts information for Cat®…

Core Technical Parameters (Raw Data)

Item Details
Basic Attributes
Model 504-4246, Type: Straight-tube positioning sleeve, Fitting pin diameter: 50 mm, Single weight: 2.1 kg, Material: SAE 1045 carbon steel (surface hardened, hardness HRC 45-50), Suitable for oil lubrication, Operating temperature: -30℃ to +120℃, Radial load capacity: ≥100 kN

Key Dimensions (Metric/Imperial)
Inner diameter: 50 mm (tolerance +0.02/-0 mm), Outer diameter: 62 mm (tolerance +0.03/-0 mm), Total length: 70 mm (tolerance ±0.1 mm), Wall thickness: 6 mm, Chamfer at both ends: 1×45°, Fitting mounting hole diameter: 62 mm (tolerance +0.01/-0 mm), Fit clearance: 0.03-0.05 mm

Compatible Machines and Parts
Compatible with excavators For boom, stick, and connecting rod hinges of 320E, 323E, 329E, and 950K/966K loaders, compatible with pin models 190-3524 and 190-3525.

Structural and Performance Characteristics:

High-Precision Positioning: Integral hardening ensures high dimensional accuracy and good coaxiality, guaranteeing stable relative positioning between the pin and mounting hole, reducing sway and impact.

Wear-Resistant and Durable: Uniform surface hardness, suitable for high-frequency oscillation and heavy-load conditions, reducing wear on the pin and sleeve, extending component life.

Easy Installation: Straight-tube, stepless design allows for cold-press installation without complex tooling. Compatible with standard mounting holes, offering strong versatility.

Installation and Maintenance Points (Original Data):

Installation: Clean the sleeve, pin, and mounting hole, removing oil, rust, and burrs. Check dimensions with an inside and outside gauge; the clearance must meet the requirement of 0.03-0.05 mm.

Cold-press installation is employed using specialized tools (such as 9D-9470). Installation pressure is controlled at 60-80 kN, ensuring the sleeve end face is flush with the mounting hole end face, with a coaxiality tolerance ≤0.05 mm.

After installation, add lubricating oil, ensuring an oil film thickness ≥0.005 mm for adequate lubrication.

Maintenance: Inspect sleeve wear every 1000 hours. Replace immediately if inner diameter wear >0.2 mm or surface scratches or peeling appear.

Regularly check the lubrication system to ensure normal oil pressure and flow, preventing sleeve and pin from sintering due to poor lubrication.