Product Overview
5000-7000lb (3175kg) US-market idler hub (core load-bearing). Heavy-load reliable, smooth rotation, fits medium-duty cargo/RV/agricultural trailers (FMVSS compliant). Customizable: load/size/environment.
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 Fit: FMVSS compliant, fits top US brands.
- Reliable: Double-row bearings + cast iron, 30% less maintenance.
- Weather Resistant: Dual-layer for US climates.
- Durable: 20% longer life than industry avg.
- Customization: One-stop (drawings/params); custom tested.
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
All-in-one hub set—comes ready to install, no hunting for extra parts.
Smooth spinning cuts friction, keeps wheels rolling steady.
Sealed tight to block dirt, water, and grime—lasts longer.
Fits most trailer sizes, from small utility to big hauls.
Sturdy build handles heavy loads without wobbling or wear.
Easy to swap out, basic tools enough for quick replacement.
