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Couplemate Trailer Parts
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Hubs - Unbraked

Unbraked Lazy Hubs: Technical Overview

Unbraked (lazy) hubs are the core of a simple trailer axle. They allow wheels to rotate freely without a braking mechanism.

Choosing the right hub depends on your axle capacity and the bearing profile used by your spindle.🔩

Bearing Profiles & Capacities

  • Standard (LM):Rating: Up to 750kg – 1,000kg per pair.Bearings: LM11949/10 (Inner) & LM12749/10 (Outer).Common Use: Small box trailers and jet ski trailers.
  • Slimline (Ford):Rating: Up to 1,450kg – 1,500kg per pair.Bearings: L68149/11 (Inner) & LM12749/10 (Outer).Common Use: Single axle trailers and tandem setups.
  • Parallel:Rating: Up to 1,600kg per pair.Bearings: L68149/11 (Both Inner & Outer).Benefit: Uses two large bearings for better load distribution.
  • 2-Tonne:Rating: Up to 2,000kg per pair.Bearings: 30210J (Inner) & 29749 (Outer).Common Use: Heavy-duty plant trailers and large horse floats.
  • 3-Tonne:Rating: Up to 3,000kg per pair.Bearings: Large 3t specific roller bearings.Common Use: Earthmoving equipment trailers and industrial builds.✨

Finish Options

Natural (Raw Cast): Best for dry-land trailers (garden waste, furniture).Cost-effective but prone to surface rust if exposed to salt.

Galvanised: Hot-dipped for maximum corrosion resistance.Essential for boat trailers and coastal environments.🛠️

Installation Basics: Prep: Pack bearings thoroughly with high-temperature marine grease.

Seating: Press the bearing cups into the hub using a driver tool.Assembly: Insert the inner bearing and rear grease seal.

Mounting: Slide the hub onto the spindle; add the outer bearing and washer.

Tension: Tighten the castle nut until the hub stops, then back off 1/8th of a turn.Secure: Insert a new split pin, then tap the dust cap.

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