Knott Hub System for EZ Loader Trailers
Knott hubs are a sealed hub system used on lighter EZ Loader trailers with torsion axles.
Unlike traditional grease or oil bath hubs, Knott hubs are designed as a complete, non-serviceable unit.
👉 When they fail, they are replaced—not rebuilt.
What Is a Knott Hub?
- Sealed bearing hub system
- Pre-assembled from the factory
- No grease packing or oil filling required
👉 Common on Autoflex torsion axle setups.
How Knott Hubs Are Different
- No serviceable bearings
- No oil bath or grease system
- Entire hub is replaced as one unit
👉 This simplifies maintenance but changes how failures are handled.
Common Applications
- Light-duty EZ Loader trailers
- PWC trailers
- Small jon boat trailers
- Models such as 58BT, 67BT and 68BT series
When to Replace a Knott Hub
- Noise during rotation
- Play in the wheel
- Water intrusion or seal failure
👉 Unlike oil bath hubs, there is no internal service—replacement is required.
Important Installation Notes
- Spindle nut is single-use and must be replaced
- Proper torque is critical
- Do not reuse worn components
👉 Incorrect installation can lead to premature failure.
Knott vs Oil Bath Hubs
- Knott: Sealed, maintenance-free, replace as unit
- Oil Bath: Serviceable, requires oil monitoring
👉 The system is determined by your axle—not interchangeable.
Replacement & Fitment
To match a replacement hub, confirm:
- Axle type (torsion / Autoflex)
- Hub style (Knott sealed system)
- Bolt pattern (typically 5-lug)
Real-World Insight
Knott hubs are commonly found on lighter EZ Loader trailers and are designed for simplicity. However, many owners expect them to be serviceable like traditional hubs—this is one of the most common misunderstandings.
👉 Call us—we’ll help confirm fitment before you order.
This guide incorporates manufacturer information and real-world service experience with EZ Loader trailer hub systems.