Mechanical Disc Hubs and Rotors

Disc hubs or rotors are available in untreated plain finish (“as cast”). Some disc hubs are also available in hot dip galvanised finish. With the hot dip galvanised finish, wheel bearings and zinc plated wheel studs are fitted and all appropriate surfaces are hot dip galvanised. On AL-KO disc hubs/rotors the friction surfaces are machined after the galvanising process to provide superior brake performance. Galvanise surface treatment left on the friction surface would dramatically reduce brake performance.

Disc hubs are cast to include the hub, which houses the wheel bearings, whilst rotors are fitted to a separate hub. AL-KO can provide disc hubs and rotors drilled to suit the majority of popular wheel drilling patterns ex stock and can manufacture to suit most other drilling patterns on request, depending on compatibility. The table below lists popular disc hubs and rotors.

Disc hubs are available in many formats, including undrilled, drilled, studded (with studs & nuts) and with full bearing kits.

It is important to select the appropriate brake capacity and to seek advice from AL-KO on the appropriate axle machining profile and bearing configuration to carry and stop the required load given the wheel size that is to be fitted.

Where the type of disc is referred to as “disc hub”, this is a one piece hub and disc combination and it is usually fitted with LM or slimline bearing types.

Reference to “disc rotor” indicates the rotor is fitted to the back of a large capacity hub and bearing combination such as 1.5 tonne or 2 tonne or larger.

Note: the braking capacity should be matched to the planned maximum trailer mass.