

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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- In Stock
75mm Swivel Castor, 50kg Capacity | Rubber Tyre Wheel, Roller Bearing (LSV075RMB)
£4.2675mm Top plate Swivel Castor with a Black Rubber T... Read Moreyre Wheel on a pressed steel centre. It has 55x42mm bolt hole centres and a load capacity of 50kg using manual propulsion at 4km/h.This popular general purpose castor is fitted with a Black Rubber Tyre Wheel that is gentle on floors. The Caster wheel has a roller bearing that offers low rolling resistance. It is ideal as a new or replacement castor for most domestic or industrial applications such as a trolley or dolly where the travel speed of the castor generally does not exceed walking speed. - In Stock
75mm Swivel Castor, 50kg Capacity | Rubber Tyre Wheel, Plain Bore (LSV075RP)
£3.5075mm Grey Rubber Tyre Wheel on a Nylon centre fitt... Read Moreed into a Top Plate Swivel Castor with 55x42mm bolt hole centres. The load capacity of this castor is 50kg using manual propulsion at 4km/h.This popular general, light duty general purpose castor is fitted with a grey rubber tyre that is non-marking and gentle on floors. This castor is ideal for most domestic or industrial castor uses where a small yet sturdy swivel castor in needed. - Out of Stock - On the Way
200mm Shock Absorbing Swivel Castor, 450kg Capacity | Polyurethane Tyre Wheel, Ball bearing (KGDSP200ASFMUD)
Original price was: £139.05.£73.89Current price is: £73.89. Sale!200mm Shock absorbing (15mm Compression) Swivel... Read More castor and Polyurethane Tyred Aluminium Wheel. Load Capacity = 450kg
For the compression performance, please see the image for the curve by clicking on the thumbnail image above. To use this curve, please calculate the weight being carried by this castor and divide that by the one less than the number of castors on your equipment, So if you have a trolley using 4 of these castors and the total weight being carried is 500kg, then the compression of the rubber pad is the reading given on the y axis at 167kg (500kg / 3 = 167kg) which is just over 10mm.
- In Stock
125mm Swivel Castor, 350kg Capacity | Cast Iron Wheel, Ball Bearing (KSMG125CIB)
£36.41125mm Top Plate Swivel Castor (Fabricated Steel) w... Read Moreith 105x80mm Fixing Bolt Hole Centres. Cast Iron Wheel with Ball Bearings. Load Capacity = 350kgKey Specifications and Features:- Top Plate Size: 140x110mm
- Bolt Hole Centres: Slotted 114x87mm / 97.5x71.5mm
- Fixing Bolt Size: 12mm
- Overall Height: 165mm
- Offset: 39mm
- Bearing Type: Ball Bearing
- Load Capacity: 350kg (manual propulsion at 4km/h)
- Cast iron castor wheels have a very hard tread making them the easiest of wheels to move (low tractive resistance). They have a very high load capacity, extremely wear resistant and not affected by swarf or aggressive materials.
- In Stock
125mm Swivel Castor, 350kg Capacity | Nylon Wheel, Ball Bearing (KSMG125NYB)
£35.14125mm Top Plate Swivel Castor (Fabricated Steel) w... Read Moreith 105x80mm Fixing Bolt Hole Centres. White Nylon Wheel with Ball Bearings. Load Capacity = 350kgKey Specifications and Features:- Top Plate Size: 140x110mm
- Bolt Hole Centres: Slotted 114x87mm / 97.5x71.5mm
- Fixing Bolt Size: 12mm
- Overall Height: 165mm
- Offset: 39mm
- Bearing Type: Ball Bearing
- Load Capacity: 350kg (manual propulsion at 4km/h)
- Nylon castor wheels have a hard tread making them one of the easiest to move (Low tractive resistance). They have a high load capacity, are low maintenance and extremely resistant to water, salts, greases, acids and alkalis.
- In Stock
160mm Swivel Castor, 450kg Capacity | Nylon Wheel, Ball Bearing (KSMG160NYB)
£38.86160mm Top Plate Swivel Castor (Fabricated Steel) w... Read Moreith 105x80 Hole Centres. Nylon Wheel with Ball Bearing. Load Capacity = 450kg - In Stock
150mm Shock Absorbing Swivel Castor, 360kg Capacity | Polyurethane Tyre Wheel, Ball bearing (KGDSP150ASFMUD)
Original price was: £123.23.£65.49Current price is: £65.49. Sale!150mm Shock absorbing (14mm Compression) Swivel... Read More castor and Polyurethane Tyred Aluminium Wheel. Load Capacity = 360kg
For the compression performance, please see the image for the curve by clicking on the thumbnail image above. To use this curve, please calculate the weight being carried by this castor and divide that by the one less than the number of castors on your equipment, So if you have a trolley using 4 of these castors and the total weight being carried is 500kg, then the compression of the rubber pad is the reading given on the y axis at 167kg (500kg / 3 = 167kg) which is between 11 and 12mm.
- In Stock
100mm Swivel Castor, 300kg Capacity | Polyurethane Tyre Wheel, Ball bearing (KB100NPSBJ300)
£46.95100mm Top Plate Swivel Castor (Pressed Steel) with... Read More brake. 80x60 Hole Centres. Soft Polyurethane Tyre (Shore A 80) / Nylon Centre. Load Capacity = 300kg - In Stock
100mm Swivel Castor, 100kg Capacity | Thermoplastic Rubber Wheel, Ball Bearing (KATS100TPR)
£6.34Keystone Appa... Read Moreratus / Institutional Castor with 100mm Grey Thermoplastic Wheel fitted into a Pressed Steel Top Plate Swivel Castor. This caster has slotted bolt hole centres measuring 61.5/56 x 51.5/46.5mm. The load capacity is 100kg using manual propulsion at 4km/h
Running on a quality ball bearing the wheel offers excellent rolling performance. This popular apparatus castor is a great choice for a wide range of industrial and domestic applications such as trolley and garment rails, medical devices and hospitality equipment. Fitted with a grey thermoplastic wheel on a polypropylene centre this wheel is non-marking and gentle on floors and has a large plastic thread guard to protect the ball bearing from dirt ingress
- In Stock
125mm Swivel Castor, 100kg Capacity | Thermoplastic Rubber Wheel, Ball Bearing (KATS125TPR)
£7.87Keystone Appa... Read Moreratus / Institutional Castor with 125mm Grey Thermoplastic Wheel fitted into a Pressed Steel Top Plate Swivel Castor with slotted bolt hole centres measuring 61.5/56 x 51.5/46.5 mm. The load capacity of this castor is 100kg using manual propulsion at 4km/h
Running on a quality ball bearing the wheel offers excellent rolling performance. This popular apparatus castor is a great choice for a wide range of industrial and domestic applications such as trolley and garment rails, medical devices and hospitality equipment. Fitted with a grey thermoplastic wheel on a polypropylene centre this wheel is non-marking and gentle on floors and has a large plastic thread guard to protect the ball bearing from dirt ingress
- In Stock
150mm Swivel Castor, 100kg Capacity | Thermoplastic Rubber Wheel, Ball Bearing (KATS150TPR)
£10.04Keystone Appa... Read Moreratus / Institutional Castor with 150mm Grey Thermoplastic Wheel fitted into a Pressed Steel Top Plate Swivel Castor with slotted bolt hole centres measuring 61.5/56 x 51.5/46.5 mm. The load capacity of this castor is 100kg using manual propulsion at 4km/h
Running on a quality ball bearing to offer excellent rolling performance, this popular apparatus castor is a great choice for a wide range of industrial and domestic applications such as trolley and garment rails, medical devices and hospitality equipment. Fitted with a grey thermoplastic wheel on a polypropylene centre this wheel is non-marking and gentle on floors.The wheel has a large plastic thread guard to protect the ball bearing from dirt ingress
- In Stock
75mm Swivel Castor, 75kg Capacity | Thermoplastic Rubber Wheel, Ball Bearing (KATS075TPR)
£3.77Keystone Appa... Read Moreratus / Institutional Castor with 75mm Grey Thermoplastic Wheel fitted into a Pressed Steel Top Plate Swivel Castor with slotted bolt hole centres measuring 48/39x48/39mm. The load capacity of this castor is 75kg using manual propulsion at 4km/h
Running on a quality ball bearing the wheel offers excellent rolling performance. This popular apparatus castor is a great choice for a wide range of industrial and domestic applications such as trolley and garment rails, medical devices and hospitality equipment. Fitted with a grey thermoplastic wheel on a polypropylene centre this wheel is non-marking and gentle on floors and has a large plastic thread guard to protect the ball bearing from dirt ingress
- In Stock
100mm Swivel Castor, 300kg Capacity | Polyurethane Tyre Wheel, Ball bearing (MSW100APCB)
Original price was: £36.76.£20.22Current price is: £20.22. Sale!100mm Top Plate Swivel Castor with an extra strong... Read More fabricated (welded) bracket. This castor has a top plate with 4 fixing holes with 105x80mm bolt hole centres. The wheel is a Polyurethane Tyre / Cast Iron Centre Wheel running on two Ball Bearings for exceptional rolling performance. This castor has a Load Capacity of 300kg using manual propulsion at 4 km/h (walking speed).Key Specifications- Top Plate Dimensions: 135x110mm
- Bolt Hole Centres: 105x80/75mm
- Overall Height: 146mm
- Offset: 30mm +/- 2mm
- Wheel Material: Polyurethane Tyre on a Cast Iron Centre
- Tread Width: 40mm
- Bearing Type: Ball Bearings
- In Stock
160mm Swivel Castor, 500kg Capacity | Polyurethane Tyre Wheel, Ball Bearing (KSMG160PCB)
£76.04160mm Top Plate Swivel Castor (Fabricated Steel) w... Read Moreith 105x80 Hole Centres. Polyurethane Tyre / Cast Iron Centre Wheel with Ball Bearing. Load Capacity = 500kg - In Stock
200mm Swivel Castor, 400kg Capacity | Rubber Tyre Wheel, Ball Bearing (KSMG200EAB)
£43.29200mm Top Plate Swivel Castor (Fabricated Steel) w... Read Moreith 105x80 Hole Centres. Black Rubber Tyre / Aluminium Centre Wheel with Ball Bearing. Load Capacity = 400kg