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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 Stock125mm Swivel Castor, 130kg Capacity | Polyurethane Tyre Wheel, Plain Bore (KS125APNBH)
£14.97125mm Single Bolt Hole (12mm) Swivel Castor wit... Read Moreh Red Polyurethane Tyre on a White Nylon Centred Wheel and Plain Bore. The Load Capacity of this castor is 130kg using manual propulsion at 4 km/h.
The Polyurethane tyre offers a low tractive resistance making it easier to get moving compared with softer rubber tread wheels. It is also a bit softer than hard tread wheels making the castor smoother and quieter running. Polyurethane is non-marking and gentle on floors. Put this wheel into a strong bracket that has a double ball race in the swivel head and you have a castor that is a great choice for the wide range of industrial and domestic applications.
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In Stock125mm Swivel Castor, 180kg Capacity | Rubber Tyre Wheel, Roller Bearing (522RTB)
£40.37125mm Top Plate Swivel Castor (Pressed Steel) with... Read More 80x60 Hole Centres. Rubber Tyre / Cast Iron Centre Wheel with Roller Bearing. Load Capacity = 180kg -
In Stock150mm Swivel Castor, 500kg Capacity | Polyurethane Tyre Wheel, Ball bearing (KSCR15020241)
£58.95150mm Swivel Castor (Pressed Steel) and Crown Trea... Read Mored Polyurethane Tyred / Cast Iron Centre Wheel with Ball Bearing. Load Capacity = 500kg -
In Stock200mm Swivel Castor, 500kg Capacity | Nylon Wheel, Plain Bore (MSK200NY)
£31.31200mm Top Plate Swivel Castor (Pressed Steel) with... Read More 105x80mm Fixing Bolt Hole Centres. White Nylon Wheel with Plain Bore. Load Capacity = 500kg.
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In Stock160mm Swivel Castor, 200kg Capacity | Polyurethane Tyre Wheel, Roller Bearing (MSVH160PN1B)
£23.23160mm Single Bolt Hole (12mm) Swivel Castor (Press... Read Moreed Steel). Polyurethane Tyred / Nylon Centred Wheel with Roller Bearing. Load Capacity = 200kg -
In Stock63mm Swivel Castor, 122kg Capacity | 63mm Nylon Wheel, Plain Bore (261NY)
£6.2163mm Top Plate Swivel Castor (Pressed Steel) with ... Read More76x44.5mm Bolt Hole Centres and 81mm Overall Height. White Nylon caster wheel with 22mm Tread Width and Smooth Plain Bore. Load Capacity = 122kg -
In Stock300mm Swivel Castor, 1300kg Capacity | Polyurethane Tyre Wheel, Ball bearing (HKS30025241)
£213.90300mm Top Plate Swivel Castor (Fabricated Steel) w... Read Moreith 105x80 Hole Centres. Polyurethane Tyre / Cast Iron Centre Wheel with Ball bearing. Load Capacity = 1300kg -
In Stock35mm Compact Braked Castor, 100kg Capacity | Polyurethane Tyre Wheel, Ball bearing (KS035PT2BBHBR)
£11.7835mm Low Level swivel with brake castor with 10mm ... Read MoreSingle Bolt Hole Fixing. This Low Level compact castor has an overall height of 50mm and an Orange Polyurethane Wheel on a steel centre with a 27mm Tread Width and Ball bearings. Load Capacity = 100kg -
In Stock80mm Swivel Castor, 130kg Capacity | Polyurethane Tyre Wheel, Roller Bearing (MSVH080PN1B)
£7.1880mm Single Bolt Hole (12mm) Swivel Castor (Presse... Read Mored Steel). Polyurethane Tyred / Nylon Centred Wheel with Roller Bearing. Load Capacity = 130kg -
In Stock100mm Swivel Castor, 160kg Capacity | Rubber Tyre Wheel, Roller Bearing (MSK100RN1B)
£16.35100mm Top Plate Swivel Castor (Heavy Gauge Pressed... Read More Steel) with 80x60 Hole Centres. Rubber Tyre / Nylon Centre Wheel with Roller Bearing. Load Capacity = 160kg -
In Stock160mm Swivel Castor, 135kg Capacity | Rubber Tyre Wheel, Roller Bearing (LI160RMBNOTG)
Original price was: £10.58.£9.92Current price is: £9.92. Sale!160mm Top Plate Swivel Castor (Pressed Steel) with... Read More 105x80 Hole Centres. Black Rubber Tyre / Metal Centre Centre Wheel with Roller Bearing. Load Capacity = 135kg -
In Stock100mm Swivel Castor, 70kg Capacity | Rubber Tyre Wheel, Roller Bearing (LSV100RMB)
£6.63100mm Top Plate Swivel Castor with a Black Rubber ... Read MoreTyre Wheel on a Pressed Steel centre complete with Thread Guards. It has 80x60mm fixing bolt hole centres and the load capacity is 70kg 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.
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Out of Stock - On the Way150mm Swivel Castor, 600kg Capacity | Polyurethane Tyre Wheel, Roller Bearing (661PNB)
£49.78150mm Top Plate Swivel Castor (Pressed Steel) with... Read More 140x105 Hole Centres. Polyurethane Tyre / Nylon Centre Wheel with Roller Bearing. Load Capacity = 600kg -
In StockSwivel Castor, 75mm, 140kg Capacity, Nylon Wheel, Plain Bore (MSE075NY)
£7.2175mm Medium Duty Top Plate Swivel Castor. Nylon Wh... Read Moreeel and Plain Bore. Load Capacity = 140kg This castor has a 105x80mm Top Plate with 80mm x 60mm Bolt Hole Centres. The overall height is 95mm. The Nylon castor wheel is a hard tread made from quality nylon. It will not damage or mark concrete floors and is not susceptible to picking up floor debris and swarf. Nylon is a popular wheel choice because it is light weight and has a high load capacity relative to other wheel materials of the same size. It is not affected by water and is insensitive to many chemicals apart from acids. -
In Stock150mm AGV Swivel Castor ,Twin Wheel, 630kg Load | Polyurethane Wheel, Ball bearing (GATD150ASFHUD)
Original price was: £828.35.£320.14Current price is: £320.14. Sale!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 Top Plate is 145mm x 145mm and has 4 bolt holes that are spaced 120mm x 120mm, each with a 11mm hole diameter. The castor is able to tilt +/- 5o from its central axis according to the flatness of the floor. This ensures that this castor's wheels keep contact with the floor allowing smooth AGV movement and protection of the loaded cargo when changing directions (See illustration below)
The wheels are more widely separated from each other than most Twin Wheel Castors. When changing direction, the two wheels spin in opposite directions to each other which reduces the castor offset. The smaller the offset the less chance that the AGV will deviate from its designated line.
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.
