Sinotruk Howo Rear Axle Drive | Heavy-Duty Reliability for First Rear Axle

Sinotruk Howo Rear axle drive represents the pinnacle of engineering.

Designed specifically for extreme load conditions, this Sinotruk Howo First Rear axle drive assembly ensures optimal torque distribution.

When you choose genuine Sinotruk Howo Parts, you invest in safety and operational efficiency.

The rear axle drive is a core component that directly influences vehicle dynamics.

Every Sinotruk Howo First Rear axle drive unit undergoes strict quality controls.

It provides unmatched durability for mining, construction, and long-haul transport.

Proper maintenance of the axle drive reduces downtime and extends service life.

Our Sinotruk Howo rear axle drive assemblies meet original specifications.

They ensure seamless integration with other drivetrain components.

With Sinotruk Howo First Rear axle drive, you get superior traction.

Smooth power delivery even under the harshest terrain is guaranteed.

The robust housing and precision gears make this axle drive the preferred choice.

Professionals worldwide trust our genuine Sinotruk Howo Rear axle drive solutions.

Key Components & Designations of Sinotruk Howo First Rear axle drive

1. Housing of rear axle driver

The housing is a robust cast-iron casing that encloses all internal gears and bearings.

It provides structural integrity and protects the differential mechanism from contaminants.

This ensures long-term reliability under heavy loads.

2. Bearing housing

Bearing housing precisely positions the tapered roller bearings.

It maintains correct shaft alignment and reduces friction.

Machined to exact tolerances, it ensures smooth rotation and extended bearing life.

3. Shim

Shims fine-tune axial clearance and gear mesh within the axle drive assembly.

These thin metal sheets allow technicians to achieve perfect preload settings.

They optimize power transmission and reduce noise.

4. Gasket

The gasket ensures a leak-proof seal between mating surfaces.

It prevents oil seepage and keeps contaminants out of the assembly.

Made from high-quality materials, it withstands temperature fluctuations.

5. Diff. housing

Diff. housing contains the differential mechanism for wheel speed differentiation.

It allows left and right wheels to rotate at different speeds during cornering.

Manufactured from high-strength alloy to withstand torsional stresses.

6. Roller bearing

Roller bearings support the rotating shafts inside the axle drive.

They reduce friction and handle radial and axial loads effectively.

Precision-ground raceways ensure quiet operation and high load capacity.

7. Diff.spider

Diff.spider connects the planet gears inside the differential housing.

It distributes torque equally between the two side gears.

This design is crucial for smooth cornering behavior.

8. Bevel pinion

Bevel pinion transfers torque from the propeller shaft to the crown wheel.

It operates at a right angle to change the direction of power flow.

Hardened teeth are precisely cut for minimal noise and maximum efficiency.

9. Planet Pinion

Planet pinions rotate on the diff.spider within the differential.

They enable speed differentiation between the two drive wheels.

Case-hardened to resist wear and pitting under continuous heavy load.

10. Intermed.sheet

Intermed.sheet acts as a thrust washer behind the planet gears.

It reduces friction and prevents direct metal-to-metal contact.

This component contributes significantly to extended gear life.

11. Screw (hex head bolt)

High-strength hex head screws secure the crown wheel to the differential case.

They are torqued precisely to avoid loosening under vibration.

These fasteners are critical for maintaining assembly integrity.

12. Screwed ring (differential bearing adjusting nut)

The screwed ring adjusts differential bearing preload and backlash.

It is a threaded ring that locks into position once optimal settings are achieved.

This ensures stable gear alignment throughout operation.

13. Safety clip

Safety clip prevents the screwed ring from rotating after adjustment.

This small but critical locking device maintains consistent bearing preload.

It provides reliability over thousands of operating hours.

14. Pinion and crown wheel

Pinion and crown wheel form the hypoid gear set (28/17 teeth).

This gear pair reduces speed and multiplies torque output.

The specially designed tooth profile provides high strength and quiet running.

15. Locking sheet (for crown wheel bolt)

Locking sheet secures the crown wheel bolts against loosening.

It folds against bolt heads after tightening for positive locking.

This prevents bolts from backing out due to shock loads.

16. φ165 flange assembly

The φ165 flange assembly connects the output shaft to the propeller shaft.

It is dynamically balanced to prevent driveline vibrations.

The assembly features a splined hub for secure torque transfer.

17. Nut (for flange)

This heavy-duty nut locks the flange onto the output shaft.

It is tightened with precise torque specifications.

Often supplied with self-locking feature or cotter pin hole for extra safety.

18. Split pin

Split pin (cotter pin) secures castle nuts on critical joints.

Applications include the flange nut or kingpin assemblies.

It provides a fail-safe locking mechanism against vibration.

19. Main oil seal assembly (for differential)

The main oil seal prevents lubricant from leaking out of the housing.

It features a double-lip design with spring-loaded tension.

This ensures reliable sealing even under pressure differentials.

20. Shifting dog (fixed engagement sleeve)

Shifting dog engages the differential lock when extra traction is needed.

It slides axially to connect the side gear to the differential case.

This forces both wheels to turn together for maximum grip.

21. Locking sheet (for shifting dog nut)

This locking sheet secures the nut on the shifting dog mechanism.

It prevents unintended disengagement of the differential lock.

Essential for maintaining traction under heavy load conditions.

22. Nut (round nut)

Round nut is used on threaded shafts like the output yoke.

It is tightened with a spanner for precise preload control.

Often combined with locking plates or pins for secure retention.

23. Shifting fork

Shifting fork moves the sliding engagement sleeve to activate the lock.

It is actuated by pneumatic or manual control systems.

Translates linear motion into precise gear engagement.

24. Grub screw (slotted set screw)

Grub screw secures components like shift fork position.

It features a slotted cone point for positive locking.

The cone point digs into the shaft to prevent movement.

25. Type 1 hexagon nut

Standard hexagon nut used for general fastening on non-critical joints.

It meets high tensile strength requirements for heavy-duty applications.

Compatible with spring washers for vibration resistance.

26. Tappet (shift fork moving block)

Tappet acts as a wear pad between the shifting fork and engagement sleeve.

It reduces friction and noise during gear engagement operations.

Made from hardened steel or bronze for extended wear life.

27. Gear shift sleeve (sliding engagement sleeve)

Gear shift sleeve slides on the differential lock hub.

It connects or disconnects the lock mechanism as needed.

Internal splines match precisely with the hub and dog teeth.

The sliding sleeve ensures rapid and positive locking action.

This improves off-road traction significantly.

28. Lashing (bending plate)

Lashing is used as a lock plate for nuts on critical shafts.

It is bent over the nut after tightening to create a mechanical lock.

This prevents rotation from vibration or thermal cycling.

29. Nameplate

Nameplate carries the part number and OEM reference information.

It also shows the production date for traceability.

Riveted to the housing for permanent identification of the axle drive unit.

Product Parameters of Sinotruk Howo Rear axle drive

Why Choose Our Sinotruk Howo Rear axle drive?

Every unit is built to match original Sinotruk specifications.

This ensures flawless fitment and consistent performance.

Our Sinotruk Howo Rear axle drive delivers exceptional durability.

It reduces total cost of ownership for fleet operators significantly.

We use premium alloy steel for all gears and shafts.

Advanced heat-treatment processes enhance fatigue resistance.

This results in superior impact strength for challenging conditions.

Our Sinotruk Howo First Rear axle drive assemblies undergo 100% testing.

Tests include gear contact pattern and noise level inspection.

Leak tests guarantee immediate reliability and consistent performance.

We provide extensive technical support and spare parts catalog.

Choosing our rear axle drive means long-lasting performance.

You benefit from minimal operational disruptions across your fleet.

Whether for mining, construction, or heavy transport, our axle drives keep you moving.