Hub Assemblies, Bearings, Spindles, and Oil Seals for Trailers
Every kilometer driven with a light-duty trailer places tremendous stress on its wheel assemblies. It is the wheel hub, working together with the spindle and bearings, that holds the wheel on the axle, ensures smooth rotation without overheating, and absorbs lateral impacts on turns and potholes. When even a single component in this chain fails, operating the trailer becomes hazardous for both the driver and the cargo.
The pricepy.com.ua online store offers a complete range of components for servicing wheel assemblies on Kyiashko trailers, as well as AL-KO and KNOTT axles — from individual oil seals to fully pre-assembled hub modules.
What Makes Up a Wheel Assembly and What Each Part Does
- Hub Assemblies: Ready-to-install cast or stamped housings with pre-pressed bearings and seals. This is the fastest way to restore the running gear without spending time pressing out worn bearing races.
- Bearings: The heart of the assembly that handles radial and axial forces. Depending on the axle model, either double-row angular contact bearings (compact, maintenance-free units) or tapered roller bearings are used.
- Spindles (Stub Axles): Steel shafts onto which the hub is directly mounted. They are used for custom axle builds or repairing a beam when the bearing journal has sustained mechanical damage.
- Oil Seals and Dust Caps: Elastic seals and protective hub caps. They create a tight barrier against water, sand, and road salt while keeping grease securely inside the bearing chamber.
How to Avoid Mistakes When Selecting Parts
To ensure a part fits without play or misalignment, check four basic specifications before purchasing:
- Bolt Pattern (PCD) and Lug Count: The most common standards are 4x98, 4x100, or 5x112 — these must match your wheel rims exactly.
- Rated Axle Load Capacity: Components for standard 750 kg trailers differ structurally from heavy-duty assemblies rated for 1,000–1,500 kg.
- Mounting Diameters and Spindle Length: The inner and outer diameters of the bearing, as well as the shaft journal geometry, must match factory specifications.
- Brake System Type: Hubs for axles equipped with overrun brakes (brake drums) and those for unbraked trailers have different designs.
A Practical Tip for Long-Lasting Repairs
Whenever replacing a bearing, always install a new oil seal and a fresh dust cap, even if the old ones look intact —