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Az9100414055 New Heavy Truck Spare Parts Shacman Sinotruck Howo Faw Dongfeng Steering Knuckle Assembly

The AZ9100414055 Right Front Steering Knuckle Assembly, commonly known as the "steering spindle" or "kingpin knuckle", is a critical safety component manufactured by Sinotruk (China National Heavy Duty Truck Group) for use in heavy-duty commercial vehicles. This forged steering knuckle is specifically designed for installation on the right-hand (RH) side of the front axle, where it serves as the pivotal link between the wheel hub, suspension system, and steering linkage.

As a core structural part of the vehicle’s front-end assembly, this knuckle supports vertical, lateral, and dynamic loads during driving and turning. It enables smooth rotation around the kingpin (steering axis), allowing precise directional control while maintaining strength under extreme operating conditions such as mining, construction, and long-haul freight transport.

Made from high-strength alloy steel (40Cr or 42CrMo) with precision machining and surface hardening treatments, the AZ9100414055 ensures excellent fatigue resistance, dimensional accuracy, and wear performance. The 2026 version features improved self-lubricating bushing design for enhanced durability in demanding environments.

 
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  • AZ9100414055 

  • Shacman Sinotruk HOWO Dongfeng FAW

Attribute Specification
Part Number AZ9100414055
Product Name Right Front Steering Knuckle Assembly / Steering Spindle (RH)
Function - Supports front wheel load
- Enables steering motion
- Mounting base for brake, arm, and suspension components
Installation Position Front Axle – Right-Hand Side (RH)
Vehicle Type Heavy-Duty Trucks, Tractors, Freight & Construction Vehicles
Compatible Platform Sinotruk HOWO, SITRAK, Steyr D7B Series
Axle Compatibility VGD71, VGD75 (7-ton to 7.5-ton class non-driven front axles)
Main Material Forged Alloy Steel (40Cr or 42CrMo)
Heat Treatment Overall forging + quenching & tempering + local induction hardening
Brake Type Compatibility Disc Brake Configuration (specifically for disc-brake front ends)
Mounting Interfaces - Kingpin bore (upper & lower)
- Hub bearing seat
- Brake caliper bracket
- Tie rod & drag link attachment points
- Steering arm mounting
OEM Manufacturer Sinotruk Original Equipment
Standards Compliance GB/T 28938, QC/T 310, ISO/TS 16949
转向节总成-3


转向节总成-1


Parameter Specification
Material Yield Strength ≥ 800 MPa
Hardness (Surface Treated Area) HRC 50–58 (main pin bores and journal areas)
Kingpin Bore Diameter ~Φ55 mm – Φ60 mm (for upper/lower bushings)
Hub Bearing Seat Diameter Matches double-row taper roller bearings
Weight (Approx.) 38 kg – 45 kg
Overall Dimensions (L×W×H) Approx. 600 × 300 × 500 mm
Tolerance Grade IT7–IT8 (precision machined surfaces)
Fatigue Life ≥ 1 million cycles under rated load
Load Capacity Designed for 7–7.5 ton front axle applications
Operating Temperature Range -40°C to +120°C
Grease Fitting (Zerk) 2 locations (upper and lower bushings)
Recommended Lubrication Interval Every 5,000–10,000 km using EP Lithium Grease


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