Custom CNC Gray Cast Iron Automotive Rear Wheel Bearings
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Service Item
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Details
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Technical Parameters
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Delivery Time
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Wheel Hub Bearing Units
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Double row angular contact ball/ tapered roller bearings
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Axial clearance 0.002-0.060mmLife B50≥750 cycles
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Prototype: 7-10 daysMass production: 20-30 days
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Rear Wheel Bearings
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Dedicated bearings for drive/non-drive wheels
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Starting torque 1.0-8.0N·mVibration ≤45-50dB
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Prototype: 5-8 daysMass production: 15-25 days
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5-Hole Accessories Machining
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CNC precision machining mounting flanges
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Position accuracy ±0.02mmBolt hole diameter tolerance H7
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Prototype: 3-5 daysMass production: 10-15 days
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Ring Gear Manufacturing
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Gear hobbing, heat treatment strengthening
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Module 1-40Hardness 58-64HRC
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Prototype: 7-10 daysMass production: 20-30 days
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Material Selection
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Bearing steel, alloy structural steel
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GCr15, 42CrMo, 40CrNiMo
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Based on material inventory
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Quality Inspection
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CMM measurement, life testing
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100% full inspection, ISO/TS 16949 certified
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Synchronous with production
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Description
Professional Automotive Wheel Hub Bearings & CNC Machined Accessories Customization Service
We specialize in providing high-quality custom services for automotive wheel hub bearing units, rear wheel bearings, and CNC machined 5-hole accessories with ring gears. Utilizing advanced bearing manufacturing technology and precision CNC machining processes, we deliver reliable chassis system solutions for passenger cars, commercial vehicles, new energy vehicles, and more.
Technical Parameters & Delivery Time
| Service Item | Details | Delivery Time |
|---|---|---|
| Wheel Hub Bearing Units | Double row angular contact ball/ tapered roller bearings Axial clearance 0.002-0.060mm Life B50≥750 cycles |
Prototype: 7-10 days Mass production: 20-30 days |
| Rear Wheel Bearings | Dedicated bearings for drive/non-drive wheels Starting torque 1.0-8.0N·m Vibration ≤45-50dB |
Prototype: 5-8 days Mass production: 15-25 days |
| 5-Hole Accessories Machining | CNC precision machining mounting flanges Position accuracy ±0.02mm Bolt hole diameter tolerance H7 |
Prototype: 3-5 days Mass production: 10-15 days |
| Ring Gear Manufacturing | Gear hobbing, heat treatment strengthening Module 1-40 Hardness 58-64HRC |
Prototype: 7-10 days Mass production: 20-30 days |
Core Technical Advantages
Wheel Hub Bearing Unit Technology
- Double Row Structure Design : Adopts double row angular contact ball bearing or tapered roller bearing structure
- High Precision Clearance Control : Axial clearance 0.002-0.060mm ensures smooth operation
- Long Life Design : B50 life ≥750 cycles, equivalent to over 150,000 km
- Sealing Protection System : Double lip rubber seal, protection class IP66
Rear Wheel Bearing Professional Manufacturing
- Drive Wheel Dedicated : Bears combined radial and axial loads
- Non-Drive Wheel Optimization : Low friction design improves fuel efficiency
- Strict Torque Control : Starting torque 1.0-8.0N·m, suitable for different vehicle types
- Low Vibration Operation : Vibration noise ≤45-50dB enhances driving comfort
CNC Machined Accessories Expertise
5-Hole Mounting Flange
- Precision Positioning : Bolt position accuracy ±0.02mm
- Strict Tolerance : Hole diameter tolerance H7 ensures installation precision
- Surface Treatment : Zinc plating or oxidation treatment for corrosion protection
- Material Optimization : High strength alloy structural steel, tensile strength ≥800MPa
Ring Gear Manufacturing
- Gear Hobbing Process : High precision gear hobbing, tooth profile accuracy ISO 7 grade
- Heat Treatment Strengthening : Through hardening + tempering, hardness 58-64HRC
- Module Range : Supports ring gears with module 1-40 specifications
- Wear Resistance : Effective hardening depth 0.8-1.2mm
Material & Process Assurance
High-Quality Material Selection
- Bearing Steel : GCr15 high carbon chromium bearing steel, hardness 60-65HRC
- Alloy Structural Steel : 42CrMo, 40CrNiMo, high strength and toughness
- Heat Treatment Processes : Through hardening, carburizing, induction hardening
- Surface Treatments : Zinc plating, oxidation, phosphating and other corrosion protection treatments
Precision Machining Processes
- CNC Turning : High precision CNC lathe machining, roundness ≤0.005mm
- CNC Milling : 3/4/5-axis machining centers, position accuracy ±0.02mm
- Gear Hobbing : CNC gear hobbing machines, tooth profile accuracy up to ISO 5 grade
- Grinding Process : Ultra-precision grinding machines, surface roughness Ra≤0.02μm
Application Fields
Passenger Car Market
- Sedan, SUV, MPV wheel hub bearing units
- Front-wheel drive, rear-wheel drive vehicle dedicated bearings
- High-performance bearings for sports vehicles
Commercial Vehicle Sector
- Heavy-duty wheel hub bearings for trucks and buses
- Special bearing units for semi-trailers and cargo trucks
- High-strength bearings for engineering vehicles
New Energy Vehicles
- Low friction bearing design for electric vehicles
- Special bearings for hybrid vehicles
- Wheel motor bearing solutions
Quality Assurance System
International Certification Standards
- ISO/TS 16949 automotive industry quality management system certification
- IATF 16949 quality system certification
- ISO 9001 quality management system certification
Strict Testing Processes
- Dimensional Inspection : 100% full inspection with CMM
- Performance Testing : Starting torque, vibration and noise testing
- Life Testing : Bench life testing to ensure reliability
- Material Analysis : Spectrum analysis, hardness testing
Customization Service Process
1
Requirement Analysis
Professional engineers analyze vehicle parameters and technical requirements
2
Solution Design
Provide bearing structure and machining process solutions
3
Prototype Production
Complete prototype production and testing within 7-10 days
4
Mass Production
Fully automated production line ensures quality consistency
5
Finished Product Delivery
Packaging and transportation with technical support and after-sales service
