A scaffold castor spindle typically adjusts around 300 to 600 mm along the threaded spindle, letting you level a mobile tower on uneven floors. A collar or wing nut sets and locks the working height above the wheel. Choose the spindle length to match the range of level correction your site needs.

A braked scaffold castor is typically rated to carry several hundred kilograms per wheel, so a set of four supports the full weight of a loaded access tower. The exact rating depends on the wheel size and model, often stamped on the castor. The galvanised steel spindle and wheel frame are built for repeated site loads.

Yes, scaffold castors come with a brake that locks both the wheel and its swivel so the tower can't roll or rotate once positioned. You press the brake lever down to lock and lift it to release before moving. All castors on a mobile tower should be braked and locked before anyone climbs it.

Yes, scaffold castor spindles are made to fit standard 48.3 mm scaffold tube, so the spindle slots into the base of a mobile tower's vertical standard. The wheel diameter and spindle length vary by model to suit different tower heights and loads. Match the castor to your tower system and check the tube diameter before ordering.