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

A fixed castor has a rigid bracket that allows the wheel to roll in one direction only ? forward and backward. A swivel castor rotates 360° to allow multi-directional movement. Fixed castors are typically used in combination with swivel castors: fixed at the rear for straight-line guidance, swivel at the front for steering. This castor is a fixed type.

How many castors do I need, and what is the total load capacity?

Most equipment uses four castors, but the industry-standard working load calculation is based on three castors bearing the load (to account for uneven surfaces). With a 120kg rating per castor, the recommended maximum working load for a set of four is 360kg. Always ensure your total equipment weight ? including contents ? does not exceed this figure.

Is the blue rubber tread suitable for use on hard floors such as tiles, concrete, or wood?

Yes. The blue rubber tread at 75 Shore A hardness is designed to provide grip and floor protection across a range of hard surfaces including concrete, ceramic tile, vinyl, and sealed timber. The rubber compound absorbs minor surface irregularities and reduces rolling noise, making it appropriate for both industrial and light commercial settings.

How do I install this castor ? what fixings are required?

This castor mounts via a 4-bolt-hole top plate. The plate measures 100mm x 85mm with hole centres of 60mm and 80mm, and a hole diameter of 10mm. Standard M10 bolts, washers, and nuts (not supplied) are required. Ensure the mounting surface is flat, structurally sound, and capable of bearing the intended load before installation.

Need help selecting the right castor? Whether you require fixed or swivel, braked or unbraked, rubber, nylon, or polyurethane ? our team is available to advise on the correct specification for your application. Contact us before ordering if you have specific load, floor, or environmental requirements.