Product Overview
As a core load-bearing component for trailers, our 7000lb (3175kg) idler hub is engineered exclusively for the US market. It features reliable heavy-load performance and smooth rotation, perfectly matching medium-duty cargo trailers, RVs, and agricultural trailers. Adhering to FMVSS standards (a mandatory requirement for US market access), it ensures safe operation in long-haul and rugged working conditions. Customizable options cover load capacity (5000-7000lb), size specifications, and surface treatment for special environments.
Core Specifications
| Parameter Category |
Specific Specification |
Key Description |
| Rated Load Capacity |
5000-7000lb（3175kg） |
Axle-matched; 5000-7000lb customizable |
| Brake Type |
Idler (Non-Brake) |
No brakes; relies on tow vehicle |
| Compatible Axle Diameter |
1.75-2.125 inches |
Fits US medium-heavy axles; non-standard custom |
| Bearing Configuration |
Double-Row Tapered Roller Bearings |
High load/impact resistance, even distribution |
| Hub Material |
High-Strength Cast Iron |
ASTM A536 ductile iron (durable, wear-resistant) |
| Surface Treatment |
Hot-Dip Galvanization / Powder Coating |
Corrosion-resistant; coastal/humid custom |
| Bolt Specification |
6/8 Holes, 5/8″-18 UNF Thread |
US auto-grade; holes/threads customizable |
Key Features
- Double-Row Bearings: Heavy load, anti-vibration.
- Hub Shell: Precision-cast iron, durable.
- Connecting Bolts: High-tensile steel, secure.
- Oil Seal: Temp-resistant, anti-leakage.
- Dust Cover: Debris-proof, long-life.
- Manufacturing & Quality Assurance
- Manufacturing Processes
- Material: Ductile iron casting + heat treatment.
- Machining: CNC (±0.02mm) fits US axles.
- Surface: Galvanization + powder coating (anti-rust).
- Assembly: “Clean-Fit-Tighten-Inspect” + torque check.
- Quality Inspection
- Load Test: 24h 1.2x load (no deformation = pass).
- Dynamic Balance: Runout < 0.2mm (low vibration).
- Sealing Test: 50PSI air test (anti-leakage).
- Material Test: Spectral analysis (meets ASTM A536).
III. Application Scenarios & Installation Maintenance
Application Scenarios:
- Cargo Trailers: Dry van/flatbed, stable long-haul.
- RV/Agricultural: Heavy load, rugged use.
Installation & Maintenance:
- Installation: Clean axle; 2/3 lithium grease; torque 120-150 ft-lbs; seal.
- Maintenance: Inspect 4m/8k miles; grease semi-annually (quarterly harsh env).
- Abnormality: Replace damaged seals; stop on noise/overheating.
- Product Advantages
- Core Advantages
- Market Compliance: Fully meets FMVSS and FMCSR requirements, directly accessible to US mainstream trailer brands.
- Structural Reliability: Double-row tapered roller bearings + ASTM A536 ductile iron construction, reducing maintenance frequency by 30% vs. industry average.
- Environmental Adaptability: Dual-layer hot-dip galvanization + powder coating, suitable for North American coastal humidity and northern low-temperature environments.
- Durability: 20% longer service life than industry peers, verified by 240-hour fatigue testing.
- Customization Capability: One-stop service from drawing review to sample testing, supporting 7-day rapid sampling for urgent orders.
About Us
20 years of trailer axle manufacturing experience. Specialized in Australian customization (45/50mm options). Compliant with standards, 24h after-sales, on-time delivery to Australia.
Attention Notes
