Product Description: Ring Gear, Pinion Gear, Flange, and Differential Assembly for XCMG LW500FN Wheel Loader Drive Axle
The Ring Gear, Pinion Gear, Flange, and Differential Assembly collectively form the heart of the drive axle power transmission system in the XCMG LW500FN 5‑ton class wheel loader. These precision‑engineered components work in unison to transfer rotational power from the transmission to the wheels, providing the torque multiplication and speed reduction required for heavy‑duty loading, digging, and material handling operations.
The Differential Assembly is the core component of the axle system, responsible for allowing the left and right wheels to rotate at different speeds when the loader turns while continuing to transmit torque to both wheels. This function is critical for preventing tire scuffing, reducing driveline stress, and maintaining stable traction on uneven ground. The differential assembly houses the ring gear, pinion gear, differential case, and internal gear sets that together manage torque distribution across the axle.
The Ring Gear and Pinion Gear — also referred to as the crown wheel and pinion — form the final reduction stage of the driveline. The pinion gear, mounted on the input shaft from the transmission, meshes directly with the larger ring gear bolted to the differential case. This hypoid gear set provides significant torque multiplication, converting high‑speed, low‑torque input into low‑speed, high‑torque output suitable for heavy pushing, climbing, and bucket loading. The precise tooth geometry and heat treatment of these gears ensure quiet operation, long wear life, and resistance to shock loads encountered during aggressive digging.
| Part Number | Part Name / Description | Drive Axle Component Category |
|---|
| 275102629 | Differential Assembly / Rear Axle Differential Unit | Complete Differential Assembly |
| 275102485 | Main Reducer Assembly (Crown Wheel Gear & Pinion Set) | Ring Gear and Pinion Gear (Main Reduction Set) |
| 275102460 | Front Axle Assembly | Complete Front Axle Assembly (includes differential) |
| 275100161 | Left Differential Case | Differential Case Half |
| 275101684 | Right Differential Case | Differential Case Half |
| 275101798 | Differential Case | Differential Housing / Case Assembly |
| 275102059 | Differential Case Repair Kit (includes 275100161 + 275101684) | Differential Case Service Kit |
| 275100158 | Nut (for differential case assembly) | Differential Fastener / Hardware |
| 275100160 | Sleeve, Screw and Nut Set (metric) | Differential Fastener / Hardware |
| 251810204 | Rear Drive Shaft Assembly | Drive Shaft / Flange Connection |
| 800363722 | Rear Drive Shaft Assembly (alternative) | Drive Shaft / Flange Connection |
| 860125124 | Universal Joint / Cross Shaft (Key‑type) | Universal Joint for Drive Shaft |
| 860166013 | Universal Joint Assembly | Universal Joint for Drive Shaft |
| 805048484 | Sleeve, Screw and Nut Assembly (metric M12×1.25×55) | Hardware for Drive Shaft Connection |
| 805300018 | Washer (GB/T93-1987) | Drive Shaft Hardware |
| 805239073 | Nut M30×2 (GB/T889.2-2000) | Axle Mounting Hardware |
| 805338293 | Washer 30mm (Dacromet, GB/T97.1-2002) | Axle Mounting Hardware |
| 805052301 | Sleeve, Screw and Nut Assembly (metric M30×2×110) | Axle Mounting Hardware |
| 251805363 | Front Transmission Shaft (500FN.3.1) | Front Drive Shaft |
Multi-Way Valve XCMG 370 Excavator
