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 Stock150mm Swivel Castor, 520kg Capacity | Nylon Wheel, Plain Bore (655NY)
£68.63150mm Flexello Top Plate Swivel Castor. The 4 h... Read Moreole top plate measures 162mm x 140mm with 140mm x 105mm Bolt Hole Centres. to suit a 10mm Fixing Bolt. The Castor Wheel is solid Nylon with smooth plain bore. Load Capacity = 520kg.
The 55 series castor is made from heavy duty pressed steel with a bright zinc finish and roller ball bearing in the swivel head.
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200mm Swivel Castor, 500kg Capacity | Nylon Wheel, Roller Bearing (822NYB)
£51.97200mm Flexello Top Plate Swivel Castor (Pressed St... Read Moreeel) With 105X80mm Bolt Hole Centres. White Nylon Wheel With Roller Bearing. Load Capacity = 500Kg - In Stock
110mm AGV Swivel Castor, 400kg Capacity | 110mm Polyurethane Wheel, Ball bearing (GSAD110ASF)
Original price was: £866.95.£335.06Current price is: £335.06.Sale!110mm Automated ... Read MoreGuided Vehicle (AGV) Castor with a dual swivel head fitted with double precision ball bearings to optimise heavy loads. This provides a self-aligning function with two swivelling axes (axis) with different swivelling radii so that the castor aligns on its own according to the moving direction which reduces the turning circle of the castor. The load capacity of this castor is 400kgThe AGV castor comes with twin polyurethane tyre wheels fitted with precision ball bearings which are fitted to a strong welded steel frame that is powder coated with a bolted wheel axle.
