Product Introduction

The 670-270 / 830-270 Axle Shaft is one of the primary drivetrain components used in Mercedes-Benz SK, MK, NG series, and Beiben NG80 heavy-duty trucks.

Installed inside the rear axle housing, the axle shaft connects the differential side gear to the wheel hub assembly, transmitting engine power from the differential directly to the drive wheels.

The axle shaft works together with:

• Differential assembly
• Side gears
• Wheel hub
• Wheel bearings
• Planetary reduction hub (where applicable)
• Rear axle housing
• Wheel flange

Its primary functions include:

• Transmitting engine torque to the wheels
• Supporting heavy vehicle loads
• Maintaining drivetrain efficiency
• Providing stable power delivery
• Ensuring reliable operation under severe working conditions

Heavy-duty trucks frequently operate with full payloads, long-distance transport, mining applications, and construction work. Under these conditions, the axle shaft experiences high torsional loads, shock loading, and continuous cyclic stress. A damaged or worn axle shaft may cause:

• Loss of driving power
• Abnormal drivetrain vibration
• Spline wear
• Wheel hub damage
• Differential failure
• Increased maintenance costs

The 670-270 / 830-270 axle shaft is manufactured from premium 42CrMo alloy steel using precision forging and advanced heat treatment. The splines are precision machined and induction hardened to improve torque capacity and wear resistance while maintaining excellent dimensional accuracy and fatigue strength.

Designed according to OEM specifications, this axle shaft provides direct replacement compatibility for Mercedes-Benz SK, MK, NG, and Beiben NG80 rear axle systems. It is widely used in fleet maintenance, drivetrain rebuilding, axle overhaul, mining trucks, construction vehicles, and heavy commercial transportation.

Each axle shaft undergoes rigorous quality inspections including:

• Chemical composition analysis
• Heat treatment hardness testing
• Spline precision inspection
• Straightness measurement
• Magnetic particle crack detection
• Dynamic balance verification
• Installation fitment testing

to ensure OEM-level reliability and long service life.

Technical Specifications

Vehicle Fitment

Payment & Shipping

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