Description
CAT 370-1674 Articulating Hitch Cap
| CAT 370-1674 Articulating Hitch Cap |
| CAT 191-2514 Bearing – Needle(Debris Resistant) |
| CAT 603-6179 Straight Sleeve Bearing |
| CAT 434-5016 Bearing – Cone(Debris Resistant) |
| CAT 167-8081 215.9mm Long Crankshaft Bearing Cap |
| CAT 164-3765 15.8mm Metallic Retainer |
| CAT 327-2995 34.5mm Inside Diameter Handrail Mount Sleeve |
| CAT 137-1076 RETAINER |
CAT 370-1674 is a Caterpillar bearing cover, adapted for Cat D8R/D9R bulldozer final drives and 980G loader differentials. It is used to secure 4P-6125 tapered roller bearings and seal the lubrication chamber. The following is professional structured information.
Core Parameters (Professional Version)
Project Details
Basic Attributes
Model 370-1674, Quantity per unit: 2 pieces (1 on each side), locating the axial position of the bearing to prevent lubricating oil leakage, compatible with final drive/differential bearing end caps, matching bearing 4P-6125, matching seal 106-9901 (φ180×3.15 mm O-ring)
Key Dimensions
Outer diameter 180 mm (tolerance h7), inner diameter 100 mm (tolerance H7), thickness 18 mm, 4 bolt holes (M16×1.5, distribution circle diameter 150 mm), bolt countersunk hole φ20 mm, sealing groove width 5 mm, depth 2 mm, end face runout ≤0.02 mm
Material and Process
Material is aluminum alloy (6061-T6), tensile strength ≥290 MPa, surface anodized (film thickness 10–15 μm), sealing groove roughness Ra≤0.8 μm, bolt hole internal thread accuracy 6H, flatness ≤0.05 mm
Performance Parameters: Operating temperature -40℃ to +120℃, sealing class IP67 (with O-ring), bolt preload torque 120–140 N・m, maximum permissible axial load ≤5 kN, oil resistance and pressure resistance ≥1.5 MPa
Compatible Models: Cat D8R/D9R bulldozer final drive, 980G loader differential, matching bearing housing 423-1992, suitable shaft diameter 100 mm, bearing housing clearance 0.01–0.02 mm
Installation and Maintenance Points: Clean the sealing surface before installation, check for scratches/deformation, apply Cat MTO-1000 grease to the O-ring, ensure the sealing groove is free of impurities, and clean and undamaged bolt hole threads.
During installation, tighten the bolts diagonally and evenly, pre-tightening in 3 steps (40→80→120 N・m) to avoid end face deformation. After installation, the sealing surface gap should be ≤0.03 mm with no leakage.
Check the bolt torque (≥120 N・m) and sealing surface leakage every 3000 hours. Replace any aged O-rings or deformed covers immediately to prevent water and dust from entering the bearing.
