Fixed Castors

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Fixed Castors

Fixed Castors

Fixed Castors are sometimes referred to as rigid castors. This is because Fixed castors are indeed Rigid and can only perform straight line movements. The bracket is formed from a single sheet of steel or stainless steel pressed into the desired shape. Alternatively, fabricated castors are made from forged steel, the yokes (or side plates...) are welded to the top plate.

In both cases, fixed castors do not have any moving parts.  The wheel sits directly under the top plate so that the castor offset is zero. Conversely, swivel castors have the centre of the wheel offset from the centre of the top plate (where the swivel axis is). The longer the offset the more easily the castor can self-align to the direction of force. That is, direction you want to castor to go. See here for swivel castors.

Fixed castors are generally used either in perfectly straight aisles where you want your trolley to only move forwards and backwards. It is more common that Rigid Castors are used in in conjunction with swivel or lockable swivel castors. They provide stability to your trolleys movement when travelling in a straight line and steering when rounding curves or corners.

Using Fixed Castors


A combination of Fixed and Swivelling castors is the most common configuration (two fixed and two swivel). With this configuration turning on the spot is quite hard. If you need to do this maybe all swivel castors is what you need. The addition of a directional locks can turn some castors into fixed castors and back again. Call us on  0121 772 1010 to learn more.

A word of caution. If you are using a six castor configuration, the two central castors should be Rigid Castors and at least one size bigger than those at the front and at the back. Furthermore, the two central castors must be able to hold at least half the total weight so they are strong enough to enable the platform to pivot on them. For more information about recommended load capacities, please click here. Read More

We stock a complete range of Fixed castors and their associate Swivel and Braked Castors (where available). Our ranges come with a wide variety of top plate sizes and fixing bolt hole centres.

The ranges include pressed steel, Stainless Steel and Fabricated or welded castor housings.

A castor’s size is usually referred to by the wheel’s diameter. The most common sizes are 40mm, 50mm, 75mm, 80mm, 100mm, 125mm, 150mm, 160mm, 200mm, 250mm and 300mm. These are the wheel sizes. Remember that the top plate has to sit high enough above wheel for the wheel to spin freely. Therefore, the castor’s overall height will be somewhat larger than the wheel. We’ve had some customers purchase a 100mm Castor expecting it to be “around” 100mm tall, it’s not, it’s usually around 128mm tall.

Each Fixed Castor can have a wide range of castor wheels. Nylon, Polypropylene, Rubber Tyre, Elastic Rubber Tyre, Polyurethane Tyres and Cast Iron Wheels are the most common.

Have a question? Get in touch today!

Email us at sales@keystonecastors.co.uk, phone us on 0121 772 1010 or click get in touch below!

Get in touch
Midlands

(Warehouse & Trade Counter)
Unit 1, St Andrews Trading Estate,
111 Great Barr Street,
BIRMINGHAM,
B9 4BB

Tel: +44(0) 121 772 1010
Email: sales@keystonecastors.com
Fax: 0121 773 1103

North

(Sales Office Only)
Unit 5, Paul House,
Stockport Road, Timperley,
CHESHIRE,
WA15 7UQ

Tel: +44(0) 161 865 3800
Email: manchester@keystonecastors.com
Fax: 0161 865 3400

Keystone Wood Ltd T/A Keystone Castor Company | Registered in England No. 541197 | VAT Registration No. 559034041
© 2004 – 2025 Keystone Castor Company.

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