Swivel Castors
Swivel Castors and wheels can swivel 360 degrees about the vertical axis (see figure below). They consist of a housing and a caster wheel. The housing itself is made up of a plate fitting, swivel bearings and a yoke. The Yoke is often referred to as the castor's frame (see figure below).The plate fitting determines how the... castor is going to be attached to the equipment. It is usually either a single bolt hole fitting or a plate fixing which is generally square, rectangular or triangular. Plate fittings are usually bolted to equipment so knowing your required bolt hole centres is important. The Swivel Head consists of a ball race and a number of ball bearings that roll within it. Swivel Castors can either have a single ball race or a double ball race. They perform the same function. The double ball race was developed for medium and heavy applications. This is because they are compact, perform well under static and dynamic loads and provide excellent steerability.
Swivel castors can be fitting with locks which lock (brake) wither the wheel or the swivel head or both. See Brake Castors.
Swivel Castor Components
Swivel Castor Offset
The Swivel Castor's offset it the distance from the swivel axis to the centre of the wheel (where it is secured to the castor frame). It is the reason a swivel castor will go in the direction you want it to go regardless its starting direction. The offset and castor wheel's diameter make up the swivel radius where the swivel radius = Offset + (Wheel Diameter / 2).
This is the radius of circle described but the outer dimension of the wheel swivelling around the vertical axis. Basically, this is important because it tells you how much room is needed for the swivel caster to swivel. Furthermore, the general rule is the bigger the offset the better the castor's running performance but the lower the weight it can carry. Read More
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40mm Swivel Castor, 16kg Capacity | Rubber Tyre Wheel, Plain Bore (KS040RP)
£2.1540mm Grey Rub... Read Moreber Tyre Wheel on a nylon centre fitted into a Top Plate Swivel Castor with 36x36mm bolt hole centres. The load capacity of this castor is 16kg using manual propulsion at 4km/h
This popular general, light duty purpose castor is fitted with a grey rubber tyre that will not mark or damage the floor and is ideal for most domestic and industrial castor uses where a small yet sturdy castor in needed.
- In Stock
50mm Swivel Castor, 40kg Capacity | Nylon Wheel, Plain Bore (1350000)
£2.1550mm Top Plate Swivel Castor (Pressed Steel) with ... Read More54x25mm Fixing Bolt Hole Centres. White Nylon Wheel with Plain Bore. Load Capacity = 40kg - In Stock
41mm Swivel Castor, 20kg Capacity | 41mm Rubber Tyre Wheel, Plain Bore (KLME5814)
Original price was: £1.04.£1.01Current price is: £1.01. Sale!41mm Grey Polypr... Read Moreopylene (plastic) Wheel fitted into a Top Plate Swivel Castor with 38x38mm bolt hole centres. The load capacity of this castor is 20kg using manual propulsion at 4km/hThis popular general, light duty purpose castor will not mark or damage the floor and is ideal for most domestic and industrial castor uses where a small yet sturdy castor in needed.