Description
CAT 419-1292 Front Window Roller
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The CAT 419-1292 is a Caterpillar eccentric shaft roller, adapted for the boom/stick linkage mechanism of loaders such as the Cat 980K and 982M. It is used to bear swing loads, reduce friction, and provide precise positioning, ensuring smooth operation and structural stability. The following is structured technical and application information:
Core Technical Parameters
Item Details
Basic Attributes
Model 419-1292, Type: Eccentric Shaft Roller (with Rolling Bearing), Material: Outer Ring 50Mn Alloy Steel Quenched (HRC58-62), Inner Ring 42CrMo Quenched and Tempered (HRC32-38), Single Weight Approx. 2.8 kg, Operating Temperature -30℃ to +120℃, Rated Dynamic Load 125 kN, Rated Static Load 280 kN, Limiting Speed 500 rpm, Fatigue Life ≥6000 hours
Key Dimensions
Roller Outer Diameter 80.0 mm (Tolerance 0/-0.02 mm), Inner Diameter 40.0 mm (Tolerance 0/+0.015 mm), Width 32.0 mm (Tolerance ±0.10 mm), Eccentricity 2.5 mm, Rolling Elements: Single Row Deep Groove Ball Bearing (Internal), Radial Clearance 0.02-0.04 mm, end face runout ≤0.03 mm
Compatible Models and Parts: Compatible with Cat 980K and 982M wheel loaders, used in boom linkage and stick hinge points, with matching pin model 154-7892, bearing reciprocating swing loads, reducing hinge point wear, and improving mechanism response speed.
Performance Parameters: Coefficient of friction ≤0.005, impact load resistance ≥180 kN, sealing rating IP65, lifetime lubrication (lithium-based grease), salt spray corrosion resistance meets ISO 9227 standard with no rust after 48 hours.
Structural and Performance Advantages: The composite material design of the outer ring quenched and the inner ring tempered balances surface hardness and core toughness, suitable for frequent impact and swing conditions, reducing the risk of breakage.
Built-in single-row deep groove ball bearing + double lip seal, lifetime lubrication, maintenance-free, preventing dust and mud intrusion, suitable for harsh construction environments, and reducing maintenance frequency.
Precise eccentricity design matches the motion trajectory of the linkage mechanism, improving the accuracy of boom/stick movements, reducing operational errors, and increasing loading efficiency.
Standardized hinge point dimensions require no additional machining during installation, allowing for quick replacement and reducing maintenance time and costs.
Installation and Maintenance Points: Before installation, clean the hinge pin and mounting holes, checking for deformation and burrs. Use a special press to press the roller into the mounting position, ensuring coaxiality ≤ 0.05 mm. Do not strike the outer ring to prevent bearing damage.
After installation, check that the roller rotates freely without jamming. The pin fixing bolt torque should conform to the main unit specification (approximately 220 N·m). Run for 5 minutes to confirm there is no abnormal noise or temperature rise.
Maintenance: Check the roller swing clearance every 800 hours. If the clearance is > 0.15 mm or if surface peeling or pitting occurs, replace immediately. When replacing, prioritize original parts to ensure compatibility with the pin and linkage.
