Product Model: SH-545 hub kit

Product Model: H-545 Brake Drum

Application: Designed for idler axles (non-driven axles) on trailers, RVs, and camping trailers with a 3,500 lbs (1,587 kg) load capacity, suitable for mid-to-large-sized towed vehicles.

Key Specifications & Features

1. Load Capacity

   • Rated for 3,500 lbs (1,587 kg), meeting safety standards for medium-duty RVs/campers.

2. Bolt Pattern Compatibility

   • PCD (Bolt Circle Diameter): Supports multiple standards for wheel hub adaptability:

     • 5-4.50 inches (~114.3 mm)

     • 5-4.75 inches (~120.65 mm)

     • 5-5.50 inches (~139.7 mm)

     • 5-5.55 inches (~141 mm)

   • Studs: ½”-20 press-in studs (UNF coarse thread), ensuring secure mounting.

3. Bearing Compatibility

   • Bearing set: L68111 (inner ring) + L44610 (outer ring), a common trailer axle bearing combo for easy maintenance.

4. Material & Manufacturing

   • Material: High-strength cast iron or alloy steel (to be confirmed), with wear/heat resistance.

   • Surface treatment: May include anti-rust coating or heat treatment (e.g., quenching) for durability.

5. Certifications

   • Highlight if compliant with DOT, SAE, or ISO (if applicable) to enhance credibility.

Key Advantages

• Multi-PCD Fitment: Covers mainstream bolt patterns for broad wheel compatibility.

• User-Friendly Design: Press-in studs simplify installation; standardized bearings reduce downtime.

• Robust Performance: Optimized heat dissipation minimizes brake fade, ideal for long-distance towing.

Target Markets

• North American/European RV & trailer aftermarkets (emphasize imperial-unit specs).

• Domestic high-end trailer OEMs (export-oriented buyers