CAT 361-1692 BEARING-SLV-GD

CAT 361-1692 YM is a Caterpillar heavy-duty steel-backed bronze sleeve bearing. “YM” indicates a high-quality aftermarket replacement part (compliant with CAT OE standards). It is commonly used in the boom, stick, bucket articulation pins or cylinder lugs of loaders/excavators. It is compatible with models such as 950M/962M loaders and 320GC excavators, and provides radial positioning, wear and friction reduction, and clearance compensation. It is suitable for medium and heavy-duty swinging conditions and extends the service life of the pins and articulation structures. The following is the core information:

Core Technical Parameters
Item Details
Part Model CAT 361-1692 (3611692) YM Steel-backed Bronze Sleeve Bearing, suitable for 45mm diameter pins, used for wear prevention and positioning of hinged pins

Material Steel back + bronze alloy (CuSn10Pb10), steel back thickness 1.5mm, bronze layer thickness 2mm, surface contains oil holes/grooves, Ra≤0.2μm, withstands -40℃ to 120℃, suitable for mineral oil/hydraulic oil conditions

Key Dimensions Inner diameter 45mm, outer diameter 55mm, length 60mm, wall thickness 5mm, chamfer C1, single weight approximately 0.25kg, suitable for mounting positions with 45mm diameter pins and 55mm mounting hole diameter

Compatible Models CAT 950M/962M/972M loaders, 320GC/330GC This product is suitable for excavators, 140M graders, D11T bulldozers, 777F mining trucks, etc., and is compatible with articulated pins for boom-stick, stick-bucket, and connecting rod-rocker arm connections. Working pressure ≤40MPa.

Performance Parameters: Radial load ≥50kN, coefficient of friction ≤0.12 (with grease), suitable for oscillation frequencies ≤8 times/minute and oscillation angles ≤±90°, service life ≥6000 working hours.

Core Functions and Structural Features:
Steel-backed bronze composite structure: The steel back provides high strength and rigidity, while the bronze alloy layer offers excellent friction reduction and embedding properties, suitable for medium to heavy-duty applications, reducing direct wear between pins and mounting holes.

Oil-lubricated design: Surface oil grooves/holes store grease, forming a stable oil film, reducing friction loss, suitable for high-frequency oscillation conditions, and ensuring flexible operation of articulated parts.

Precise Positioning Compensation: Strict dimensional tolerances (inner diameter H7, outer diameter g6) ensure radial positioning accuracy of the pin, compensate for assembly clearances in hinged structures, suppress radial runout of the pin, and accommodate pin radial runout ≤0.05mm.

YM Quality Assurance: Meets CAT OE standards; material composition, dimensional tolerances, and surface treatment meet standards; suitable for medium- and heavy-duty oscillating parts, ensuring safe equipment operation.

Installation and Maintenance Points
Installation Specifications: Clean the pin, mounting hole, and 361-1692 inner/outer diameter, removing oil, metal filings, and burrs. Check the pin roundness to ≤0.02mm, and the mounting hole diameter tolerance to H7 (55mm + 0.03mm).

Use a special press to smoothly press the sleeve into the mounting hole, ensuring the end face fits snugly against the mounting surface without tilting. After installation, check the pin’s rotation/oscillation flexibility for no jamming, and the axial runout of the accommodating pin should be ≤0.1mm.

After installation, apply lithium-based grease (NLGI grade 2) to fill the gap between the sleeve and the pin. Replenish the grease every 200 working hours to ensure friction reduction and corrosion prevention.

Maintenance Recommendations: Check sleeve wear every 3000 working hours. Replace immediately if the inner diameter wear is ≥0.1mm or if scratches or peeling appear on the surface to prevent excessive wear on the pin and mounting hole.

Simultaneously check pin wear. Replace the pin along with the 361-1692 sleeve when the shaft diameter wear is ≥0.1mm to ensure fit accuracy and hinge structure stability.