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SANY Mining Trucks Middle/Rear Axle Final Drive Case HD90149326082/HD90149326080
Typically used in conjunction with the main reducer assembly, axle shafts, and differential housing, it serves as a critical wear-prone component and core maintenance part for the drive axles of wide-body mining dump trucks.
FUNCTION
1. Structural Support and Load-Bearing Function: As the housing for the main reducer, it provides a robust mounting base; it supports core components-such as the drive pinion, ring gear, and differential assembly-and withstands the immense torque and impact loads generated during heavy-duty vehicle operation.
2. Power Transmission Protection Function: It encapsulates and protects the internal gear train and differential assembly, preventing the ingress of dirt, moisture, and foreign objects. By maintaining a sealed environment for the lubricating oil, it ensures the main reducer performs stable speed reduction and torque amplification, thereby efficiently transmitting power output from the transmission to the axle shafts and wheels.
3. Heat Dissipation and Structural Rigidity Function: Constructed from high-strength cast materials, it features excellent heat dissipation capabilities and structural rigidity. This minimizes deformation under high-temperature operating conditions, ensuring the reliable operation of the drive axle during prolonged heavy-load usage and across harsh mining terrain.
4. Mounting and Positioning Function: Through precise flange interfaces, it connects seamlessly with components such as the axle housing and axle shafts. It establishes a precise positioning datum for the entire drive axle system, ensuring uniform power distribution between the left and right wheels, and thereby maintaining the vehicle's driving stability and off-road traversability.
5. Maintenance and Service Function: As a detachable housing, it facilitates the inspection, repair, and replacement of the main reducer's internal gears, bearings, and differential assembly, thereby reducing the overall complexity and cost associated with maintaining the drive axles of heavy-duty mining trucks.
Brief Description of Operating Principles
1. Power Input Stage:Power originating from the transmission or driveshaft enters the interior of the final drive housing via the drive bevel gear.
2. Speed Reduction and Torque Amplification Stage:
The drive bevel gear engages with a driven bevel gear (or spur gear) located inside the housing; through this gear train, a primary (or multi-stage) speed reduction is achieved. Simultaneously, output torque is significantly amplified to meet the demanding requirements for hill climbing and heavy-load transport characteristic of heavy-duty mining trucks.
3. Differential Distribution Stage:The reduced-speed power is transmitted to the differential assembly (mounted within the housing). Based on the driving resistance encountered by the left and right wheels, the differential automatically distributes rotational speed and torque, ensuring that the wheels rotate at different speeds during vehicle turns or when traversing uneven terrain, thereby preventing tire slippage.
4. Power Output Stage:The differential transmits power to the wheels via the axle shafts, propelling the vehicle forward. Flange interfaces on the housing ensure precise connections with components such as the axle casing and axle shafts, thereby maintaining the stability and integrity of the entire power transmission path.
5. Sealing and Lubrication Protection Stage:The housing forms a sealed chamber that retains lubricating oil, providing lubrication, cooling, and sealing for the internal gears and bearings while preventing the ingress of dirt, sand, and moisture. Additionally, the housing structure facilitates heat dissipation, ensuring continued normal operation even under conditions of high temperature and heavy load.
6. Reset and Continuous Cycle:When power input ceases, the gear train comes to a halt; the housing, however, continues to provide structural support, thereby safeguarding the overall reliability of the entire drive axle system.
Performance Characteristics
| Performance Advantage | Detailed Description |
|---|---|
| Strong Load-Bearing Capacity | Made of high-strength alloy cast iron with excellent structural rigidity. Capable of withstanding high torque, heavy-load impact, and harsh mining conditions of 40T–150T mining dump trucks, ensuring long-term stable operation of the drive axle. |
| High Durability | Superior fatigue and impact resistance, offering long service life. Effectively reduces drive axle failures caused by housing deformation or cracking, minimizing vehicle downtime and repair frequency. |
| Excellent Sealing and Protection | Precision flange design and sealing structure provide strong dustproof, waterproof, and oil-leakage prevention. Well-suited for dusty, high-temperature, and muddy mining environments, extending the service life of internal gears and bearings. |
| Superior Heat Dissipation | Optimized housing structure with large heat dissipation area effectively lowers the operating temperature of the final drive, prevents lubricant degradation, and maintains stable performance under high-intensity continuous operation. |
Installation Location
Installed within the main reducer position of the vehicle's intermediate or rear axle, it is secured inside the axle housing and serves as the main reducer casing, supporting the drive and driven bevel gears as well as the differential assembly.
It is bolted securely to the drive axle housing via its flange face; internally, it houses components such as the drive bevel gear, driven gear, differential assembly, and bearings; externally, it interfaces with the input end of the driveshaft and the output ends of the half-shafts.
DETAILS
| DESCRIPTION | Middle/Rear Axle Final Drive Case | PART NUMBER | HD90149326082/HD90149326080 |
| WEIGHT |
80KG |
VOLUME |
|
| TRUCK MOLDE | SANY | QUALITY | Copy,High Copy, OEM,Original |
| MOQ | 1 | WARRANTY | 1 year |
| PAYMENT | TT/WESTEN UNION | SHIPMENT | by air/sea/railway |
| BRAND | SINOSACHS | PLACE OF ORIGIN | JINAN CITY,CHINA |
| STOCK | IN STOCK | APPLICABLE SITE | CHASSIS |
| PACKAGE | Carton/Woodenbox | PORT OF LANDING | Qingdao Port,China |
Maintenance Recommendations
1. Regularly Check Oil Level and Quality:Check the gear oil level and quality within the main reducer housing every 5,000–10,000 kilometers or once a month. The oil level should be maintained within the specified range; if the oil appears blackened, emulsified, or contains metal shavings, it must be replaced immediately.
2. Replace Gear Oil on Schedule:Replace the oil with fresh oil after the initial 1,000 kilometers of operation. Subsequently, replace the oil every 20,000–30,000 kilometers (or every 6–12 months, adjusted according to operating conditions). It is recommended to use the heavy-duty gear oil models specified by Hande Axle (e.g., GL-5 85W-90 or 80W-90) and to clean any residual oil from the interior of the housing.
3. Inspect Seals and Check for Leaks:Regularly inspect the housing flange surfaces, oil seals, drain plugs, and breather plugs for any signs of leakage or damage. If a leak is detected, promptly replace the gasket or oil seal to prevent dust and moisture from entering the housing, which could lead to premature wear of the internal gears.
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