What is the difference between a fixed castor and a swivel castor?

A fixed castor rolls in one direction only, providing straight-line stability and directional control. A swivel castor rotates 360 degrees, allowing multi-directional movement. For most trolleys and carts, a combination of two fixed castors at the rear and two swivel castors at the front is the recommended configuration for balanced manoeuvrability and control.

How do I know if this castor will fit my existing equipment?

Check the top plate dimensions and bolt hole centres on your existing equipment against the specifications for this castor: plate 100mm x 85mm, hole centres 60mm / 80mm, hole diameter 10mm. If your mounting points match either hole centre measurement, this castor will fit directly. The total installed height is 181mm, which should be factored into any height-sensitive application.

Is this castor suitable for outdoor use?

This castor is primarily designed for indoor industrial and commercial use on smooth to moderately uneven surfaces. The zinc-plated plate offers a degree of corrosion resistance, and the rubber tread performs well on concrete, tile, and sealed floors. For prolonged outdoor exposure or wet environments, consider whether additional protection is required for your specific application.

How many castors do I need, and what is the total load they can support?

Each castor is rated at 130kg. A standard four-castor configuration supports a maximum combined load of 390kg ? note this is not simply 4 x 130kg, as load distribution across castors is rarely perfectly equal. For safety and longevity, it is advisable to select castors with a combined rating that exceeds your maximum expected load by a reasonable margin.