Product Model: SH-749 hub kit

Application/Compatibility

• Designed for idler axles (non-driven/support axles) with a 3,500 lbs (approx. 1,587 kg) load capacity, ideal for medium to large RVs, campers, and trailers in low-speed, high-load scenarios.

• Common uses: Trailer support wheels, auxiliary RV wheels, and other non-driven axle braking systems.

Key Specifications

1. Load Rating

   • Single-wheel capacity: 3,500 lbs, suitable for mid-sized trailer/RV axle requirements.

2. Mounting Specifications

   • Bolt Pattern (PCD): 6×5.50 inches (6-lug, 5.5-inch circle), compatible with standard U.S. trailer hubs.

   • Bearing Set: Inner bearing L68111 / Outer bearing L44610, ensuring alignment with common idler axles.

   • Studs: ½”-20 press-in studs for secure wheel mounting.

3. Material & Manufacturing

   • High-strength cast iron (e.g., HT250 grade), offering wear resistance and thermal stability for frequent braking.

   • Precision-machined drum surface and inner diameter for optimal brake shoe contact, reducing noise.

Product Advantages

• Durability: Optimized for high-load, low-RPM idler axle applications with enhanced heat dissipation.

• Interchangeability: Fits standard U.S. trailer/RV axles for easy replacement.

• Safety Compliance: Meets international standards such as SAE J431 (additional certifications can be specified).

Recommended Pairings

• Works with electric hydraulic braking systems (trailer e-brakes) or mechanical brake shoes (e.g., Ranger series).

• Maintenance: Regular bearing lubrication checks advised (every 5,000 miles).

Typical Use Cases

• Support wheels for North American tandem-axle RVs (e.g., Forest River Salem models).

• Idler axle upgrades for 3,500 lbs utility trailers (e.g., Utility Trailer brands).

For detailed technical drawings or installation guides, feel free to request further assistance.