Precision Machined Wheel Hub Stub Axle
The stub axle is a highly engineered suspension component that bridges the gap between the vehicle's chassis/suspension arm and the rotating wheel assembly. Machined to exacting tolerances from premium-grade forged alloy steel, it features distinct cylindrical steps or journals that are precision-ground to host the inner and outer wheel bearings. The outer tip is typically threaded to accept a spindle nut that locks the entire hub assembly at a precise bearing preload. Operating under severe fatigue conditions, stub axles must continuously absorb massive vertical forces from vehicle mass, lateral cornering stresses, and harsh road impacts. To survive these stresses without catastrophic fracturing, the component undergoes specialized induction hardening along its high-stress fillet radii and bearing seats, ensuring an exceptionally tough outer surface paired with a ductile, shock-absorbing internal core.
Vaibhav Bhai
Automobile Parts, Agriculture
Key Features & Benefits
- High Fatigue & Shear Resistance
- Micro-Ground Bearing Journals
- Induction Hardened Fillets
- Precision Cut Threads
- Corrosion Protection
Technical Specifications
| Material Grade Processing | Closed-Die Steel Forging (e.g., AISI 4140 / 1045 / 42CrMo) |
| Bearing Seat Finish | Centerless Ground to Ra 0.4 to 0.8 Microns |
| Thread Profile Designation | Precision Metric / UNF Fine Thread (e.g., M24 x 1.5 / 1"-14 UNS) |
| Hardness Profile Depth | Induction Hardened (50 to 55 HRC) at Critical Radii |
| Load Capacity Category | 500 kg to 3,500 kg per Spindle (Stub Type Dependent) |
Applications & Industries
- Light and Heavy-Duty Trailers
- Passenger Car Rear Suspensions
- Agricultural Implements
- Industrial Tow Tractors
- All-Terrain Vehicles
Installation & Maintenance
- Verify Journal Tolerances
- Lubricate Bearing Seats
- Protect the Spindle Threads
- Torque the Spindle Nut Exactly
- Check Axle Stub Alignment
Customer Ratings
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