Description
CAT 6K-4190 7.3\ Outer Diameter Bearing Cap
| CAT 6K-4190 7.3\ Outer Diameter Bearing Cap |
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The CAT 6K-4190 is a Caterpillar bearing lower cap, suitable for positioning and protecting bearings in rotating components such as engines and hydraulic pumps. It prevents dust and moisture intrusion and secures the bearing. The following is structured technical and application information:
Core Technical Parameters
Item Details
Basic Attributes
Model: 6K-4190; Type: Bearing Lower Cap; Material: Cast Steel (ZG35CrMo); Surface: Rust-proofed; Weight: Approximately 1.2 kg; Operating Temperature: -40℃ to +180℃; Installation Method: Bolt Fastening; Sealing Type: O-ring Seal
Key Dimensions
Outer Diameter: 120 mm; Inner Diameter: 65 mm; Thickness: 20 mm; Number of Bolt Holes: 4; Bolt Hole Diameter: 10 mm; Bolt Hole Center Circle Diameter: 100 mm; O-ring Groove Diameter: 75 mm; Groove Width: 3 mm; Flatness: ≤0.05 mm; Roughness: Ra≤1.6 μm
Compatible Models and Locations
Compatible with Caterpillar Crankshaft bearings for 330D/336D excavator C9 engine, input shaft bearings for 980K loader gearbox, and final drive bearings for D8T bulldozer. One bearing per unit, used for axial positioning and sealing protection.
Performance Parameters: Tensile strength ≥800 MPa, Yield strength ≥500 MPa, Hardness HB220-260, Sealing pressure ≤0.8 MPa, Bolt tightening torque 50-60 N·m, Corrosion resistance conforms to ISO 9227 standard.
Structural and Performance Advantages:
Reliable Protection: High-strength cast steel material withstands vibration and impact. O-ring seals effectively prevent impurities and moisture from entering the bearing cavity, avoiding grease contamination and loss, extending bearing life.
Precise Positioning: Precise fit between bolt holes and bearing housing ensures accurate axial positioning of the bearing, preventing bearing movement and reducing operating noise and wear.
Easy Installation: Standardized bolt hole design requires no additional machining during installation. Compatible with original bolts and tools, reducing maintenance difficulty.
High compatibility: Compatible with genuine Cat bearings and seals, suitable for various operating conditions, highly versatile, and reduces spare parts inventory costs.
Installation and Maintenance Points: Before installation, clean the mating surfaces of the end cap and bearing housing. Check the O-ring for damage and apply a small amount of grease to the O-ring surface to ensure a good seal. Tighten the bolts evenly, in 2-3 crisscrossing stages to avoid deformation of the mating surfaces.
Maintenance Cycle: Check the end cap bolt torque every 2500 hours. If the torque is insufficient, retighten. If the O-ring is aged or damaged, replace it immediately to prevent oil or water leakage.
Fault Prevention: Avoid impacts to the end cap to prevent deformation and seal failure. After installation, check the bearing’s rotational flexibility for any jamming or abnormal noise to ensure proper installation.
