Description
3G-7891: 124mm Internal Diameter Steel Bearing Cap
| 3G-7891: 124mm Internal Diameter Steel Bearing Cap |
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| 2G-6478: Suspension Cylinder Bearing Cap |
| 177-4147: Bearing – Cone(Debris Resistant) |
| 9J-6062: Stabilizer Link Bearing Cap |
| 353-0314: Bearing – Taper(Debris Resistant) |
CAT 3G-7891 is a Caterpillar steel double-bolt fixed bearing cap, suitable for the articulation parts of loaders/bulldozers, used to secure and seal bearings. Key information is as follows:
Key Parameters
Item Details
Type: Double-bolt bearing cap, integrating locating pins and nitrile rubber (NBR) gaskets, suitable for single-row tapered roller bearings, used for axial positioning and radial support, preventing bearing movement and contaminant ingress.
Dimensions (Metric/Imperial): Inner diameter 124.00mm (4.882 inches), Outer diameter 177.80mm (7.000 inches), Thickness 31.75mm (1.250 inches), Bolt hole diameter 19.05mm, Hole spacing 140.00mm, suitable for corresponding bearing outer diameter and mounting hole position.
Material: Low carbon alloy steel (AISI 1045), integrally forged and tempered, hardness… HB220-250, tensile strength ≥650MPa, uncoated surface, corrosion resistance relies on overall equipment protection.
Accuracy: Inner diameter tolerance +0.020/-0.010mm, outer diameter tolerance ±0.15mm, bolt hole position tolerance ±0.10mm, ensuring precise fit with bearings and supports, preventing swaying after installation.
Sealing Structure: Built-in nitrile rubber (NBR) gasket, 3.0mm thick, compression 0.5-1.0mm, suitable for operating temperatures -40℃ to 120℃, preventing dust and moisture from entering the bearing cavity.
Suitable Applications: Suitable for boom articulation shaft bearings of Cat 950H and 962H loaders, pusher arm support bearings of D6T bulldozers, etc., for fixing tapered roller bearings (e.g., 1J-6744), ensuring smooth operation of the boom/pusher arm during lifting, tilting, and withstanding heavy loads and vibration conditions.
Suitable for use during equipment overhauls when bearing caps show deformation, cracks, or aging and leaking gaskets, allowing for assembly replacement to ensure the reliability of hinged joints.
Performance Characteristics: One-piece forged structure, high rigidity, able to withstand impact loads during operation, preventing deformation that could lead to abnormal bearing clearance, and extending bearing life.
Integrated gasket and locating pin, eliminating the need for additional installation, high positioning accuracy, reducing installation errors, and improving maintenance efficiency.
Alloy steel material offers good fatigue resistance, suitable for harsh operating conditions involving heavy loads and high-frequency vibration, reducing the risk of cracking.
