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
160mm Top Plate Swivel Castor (Pressed Steel) With... Read More 105X80mm Bolt Hole Centres. This very heavy duty castor houses an extremely strong Polyurethane Tyre Wheel on a Cast Iron Centre Wheel With Ball Bearing. Load Capacity = 800Kg
200mm Heavy Duty Swivel Castor (Pressed Steel) wit... Read Moreh 105x80mm Fixing Bolt Hole Centres. This castor has an overall height of 240mm and houses a White Nylon Wheel with a 50mm Tread Width and a Needle Roller Bearing. The Load Capacity is 500kg using manual propulsion at 4km/w (walking speed).
160mm Top Plate Swivel Castor (Heavy Duty Pressed ... Read MoreSteel) with 105x80mm Fixing Bolt Hole Centres. Black Elastic Rubber Tyre on an Aluminium Centre Wheel with Ball Bearings. Load Capacity = 350kg.Elastic Rubber Tyre Wheels are a great choice. In particular, where you need a tyre that can protect your floor, absorb rolling vibrations and reduce noise which increases operator's comfort.
200mm Twin Wheeled Swivel Castor containing two Po... Read Morelyurethane Tyred wheels on cast iron centres running on Ball Bearings. The swivel bracket has a flat top plate and has four fixing holes with 105x80mm bolt hole spacing. The maximum load capacity of this castor is 1500kg.
200mm Top Plate Swivel Castor (Heavy Duty Pressed ... Read MoreSteel) with 140X105mm Hole Centres. This castor has a White Nylon Wheel with a Needle Roller Bearing. Load Capacity = 605kg
150mm Top Plate Swivel Castor (Pressed Steel) With... Read More 140X105mm Hole Centres. Polyurethane Tyre / Cast Iron Centre Wheel With Roller Bearing. Load Capacity = 600Kg
125mm Single Bolt Hole (12mm) Pressed Steel Swivel... Read More Castor. This castor has a Polyurethane Tyred Wheel on a Nylon Centred Wheel with a single Ball Bearing. The Load Capacity is 150kg using manual propulsion at 4km/h.
125mm Single Bolt Hole (12mm) Pressed Steel Swivel... Read More Castor. This castor has a Nylon Wheel with a Single Ball Bearing. The Load Capacity is 150kg using manual propulsion at 4km/h.
100mm Single Bolt Hole (12mm) Pressed Steel Swivel... Read More Castor. This castor has Nylon Wheel with a Single Ball Bearing. The Load Capacity is 150kg using manual propulsion at 4km/h.
80mm Single Bolt Hole (12mm) Pressed Steel Swivel ... Read MoreCastor. This castor has Polyurethane Tyred wheel on a Nylon Centred with a Single Ball Bearing. The Load Capacity is 130kg using manual propulsion at 4km/h.
240mm Puncture Proof Swivel Castor (Pressed Steel)... Read More with 200X160mm Top Plate Dimensions and 150X115mm Fixing Bolt Hole Centres. This Castors has an Overall Height of 297mm. The wheel has an 85mm Tread Width and Roller Bearing. Load Capacity = 150kg.
This Twin wheel ... Read More75mm Automated Guided Vehicle (AGV) Castor has a bracket made from strong Forged steel that is zinc plated. There is a hardened Taper Roller Bearing in he swivel head, which has a grease nipple, for smooth swivelling action and durability.The castor is unique because it has a self-aligned function enabled by two swivelling axes each with different swivelling radii so that the castor's offset can automatically alter when changing direction to optimise the castor's turning circle for the AGV. Specifically, the offset can range from 10mm to 30mm which reduces the castors 'swing' enabling it to better follow the designated path.The Top Plate is 112mm x 112mm and has 4 bolt holes that are spaced 92mm x 92mm, each with a 9mm hole diameter,This castor frame has two wheels with a Polyurethane tyre (Shore A 95) on an Aluminium centre each containing ball bearings, The polyurethane wheel has excellent elasticity the minimises slipping that can happen when an AGV starts or stops. In addition, the elasticity also absorbs small shocks arising from small imperfections in the floor. The wheel itself is non marking and will not damage the floor.
£510.48Original price was: £510.48.£197.30Current price is: £197.30.Sale!
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This Twin wheel ... Read More150mm Automated Guided Vehicle (AGV) Castor has a bracket made from strong Forged steel that is zinc plated. There is a hardened Taper Roller Bearing in he swivel head, which has a grease nipple, for smooth swivelling action and durability.The castor is unique because it has a self-aligned function enabled by two swivelling axes each with different swivelling radii so that the castor's offset can automatically alter when changing direction to optimise the castor's turning circle for the AGV. Specifically, the offset can range from 15mm to 35mm which reduces the castors 'swing' enabling it to better follow the designated path.The Top Plate is 145mm x 145mm and has 4 bolt holes that are spaced 120mm x 120mm, each with a 11mm hole diameter,This castor frame has two wheels with a Polyurethane tyre (Shore A 95) on an Aluminium centre each containing ball bearings, The polyurethane wheel has excellent elasticity the minimises slipping that can happen when an AGV starts or stops. In addition, the elasticity also absorbs small shocks arising from small imperfections in the floor. The wheel itself is non marking and will not damage the floor.
£890.42Original price was: £890.42.£344.12Current price is: £344.12.Sale!
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This Twin wheel ... Read More125mm Automated Guided Vehicle (AGV) Castor has a bracket made from strong Forged steel that is zinc plated. There is a hardened Taper Roller Bearing in he swivel head, which has a grease nipple, for smooth swivelling action and durability.The castor is unique because it has a self-aligned function enabled by two swivelling axes each with different swivelling radii so that the castor's offset can automatically alter when changing direction to optimise the castor's turning circle for the AGV. Specifically, the offset can range from 15mm to 33mm which reduces the castors 'swing' enabling it to better follow the designated path.The Top Plate is 145mm x 145mm and has 4 bolt holes that are spaced 120mm x 120mm, each with a 11mm hole diameter,This castor frame has two wheels with a Polyurethane tyre (Shore A 95) on an Aluminium centre each containing ball bearings, The polyurethane wheel has excellent elasticity the minimises slipping that can happen when an AGV starts or stops. In addition, the elasticity also absorbs small shocks arising from small imperfections in the floor. The wheel itself is non marking and will not damage the floor.
£766.17Original price was: £766.17.£296.11Current price is: £296.11.Sale!
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300mm Twin Wheel Extra Heavy Duty Swivel Castor. T... Read Morehe Castor Comes with 2 Heavy Duty Wheels with Polyurethane Tyres on a Cast Iron Centre. Each wheel runs on quality ball bearings. The load rating of this product is 4,000kg.
We stock a complete range of swivel castors and their associate Fixed 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 and because the swivel head sits above the caster wheel, 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 100mm tall, it’s not, it’s usually around 128mm tall.
Each Swivel 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.