Castors
Castors and wheels are components that attach to a wide range of equipment to make them mobile. Examples include, trolley castors, platforms, cabinets, workbenches and other transportation equipment. They are bought to replace existing castors or added as a new component to turn stationary equipment into a mobile unit.The ...castor's bracket or housing can be Fixed (Rigid) or Swivelling.
Fixed castor brackets can only move in two directions, forwards and backwards. Subsequently, they are described as as straight-line movement.
Swivel castor brackets can swivel the castor wheel 360 degrees. As a results they can move in any direction. Furthermore, they can be lockable with a brake. The brake can be either a wheel lock, Wheel Footbrake or a Swivel & Wheel Brake (also called a Total Stop Brake). Swivel and wheel brakes lock both the wheel and the castor's swivel head. A Wheel lock or a Wheel Footbrake locks the caster wheel only.
We stock a massive range of castor wheels to use in castor frames. Nylon, Polypropylene, Rubber Tyre, Polyurethane and Cast Iron are probably the most popular. Each type of wheel is available with either a smooth plain bore, a roller bearing or ball bearings.
Keystone Castors & Wheels stock one of the largest ranges in the UK. We have provided quality service to industrial and residential customers since 1923. Whether you need a budget castor for light duty or DIY projects or a premium quality castor for critical applications, Keystone will have the product to suit your needs.
Orders are despatched every weekday (excluding public holidays) from our Birmingham-based central warehouse. A team of technical sales people are available to help your selection and order fulfilment. Read More
- Display 45 Products per page
- In Stock
Fixed Castor, 1000kg Capacity | 150mm Polyurethane Tyre Wheel, Ball bearing (K2FT150PC2B)
£177.35150mm Twin Wheel Extra Heavy Duty Fixed Castor, Po... Read Morelyurethane Tyre Wheel, 1000Kg Load Rating - Out of Stock - On the Way
100mm Fixed Castor, 250kg Capacity | Polyurethane Tyre Wheel, Plain Bore, (488PN)
£14.68100mm Top Plate Fixed Castor (Pressed Steel) with ... Read More100x48 Hole Centres. Polyurethane Tyre / Nylon Centre Wheel with Plain Bore. Load Capacity = 250kg - In Stock
150mm Swivel Castor with Brake, 500kg Capacity | Nylon Wheel, Ball Bearing (KBMG150NYB)
£41.92150mm Top Plate Swivel Castor with Brake (Fabricat... Read Moreed Steel) with 105x80 Hole Centres. Nylon Wheel with Ball Bearing. Load Capacity = 500kg - In Stock
200mm Swivel Castor with Brake, 400kg Capacity | Rubber Tyre Wheel, Ball bearing (MSK200EA2BBR)
£46.34200mm Top Plate Swivel Castor with Total Stop Brak... Read Moree (Pressed Steel) with 105x80mm Bolt Hole Centres. Black Elastic Rubber Tyre on an Aluminium Centre Wheel with Ball Bearings. Load Capacity = 400kg.This castor has a heavy gauged pressed steel housing. With a 5mm thick Top Plate and 4mm thick forks, it is a castor built to last and suitable for arduous applications.Elastic Rubber Tyres are an excellent choice where you need a soft tyre that will not damage floors and a load capacity more than what a castor with a standard rubber tyre wheel can hold. - In Stock
150mm Fixed Castor, 800kg Capacity | Nylon Wheel, Ball Bearing (TFH150NY2H)
£81.36150mm Heavy Duty Top Plate Fixed Castor (Fabricate... Read Mored Castor) with 105x80mm Fixing Bolt Hole Centres. White Nylon Wheel with Ball Bearings. Load Capacity = 800kgFeatures of the H Series Castor- The Genuine Revvo H Series castor is made from heavy gauge forged steel
- The side plates are press formed to a cylindrical shape to give the best strength to weight ratio
- In Stock
100mm Swivel Castor, 900kg Capacity | Nylon Wheel, Ball bearing (GXT100ASFMCD)
£108.59100mm Machine... Read More Cast Nylon Wheel fitted into an extra strong Fabricated Top Plate Swivel Castor with a double thrust bearing in the swivel head to optimise the load capacity. The fixing bolt spacings are the European Standard size of 80x60mm. The load capacity of this castor is 900kg at 4km/h
This high performance castor is fitted with a white machine cast nylon wheel that will not mark the floor. The extra strong welded castor frame is powder coated to protect the frame and top plate and it is fitted with a high performance castor wheel containing two ball bearings. The bearings turn on a specially designed integrated axle shaft arrangement making this castor one of the most durable in the market. Perfect for moving very heavy loads where strength, durability and performance are critical.
The double thrust bearing in the swivel head optimise heavy loads
- In Stock
160mm Fixed Castor, 300kg Capacity | Polyurethane Tyre Wheel, Ball Bearing (MFV160PN2B)
£22.75160mm Top Plate Fixed Castor (Pressed Steel) with ... Read More105x80mm Bolt Hole Centres. Polyurethane Tyre on a Nylon Centre Wheel with ball bearing. Load Capacity = 300kg - In Stock
300mm Swivel Castor, 1300kg Capacity | Polyurethane Tyre Wheel, Ball bearing (HKS30025241)
£206.66300mm 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 Stock
125mm Swivel Castor, 250kg Capacity | Rubber Tyre Wheel, Ball bearing, (HKS12520341)
£84.89125mm Top Plate Swivel Castor (Fabricated Steel) w... Read Moreith 105x80 Hole Centres. Elastic Rubber Tyre / Aluminium Centre Wheel with Ball bearing. Load Capacity = 250kg - In Stock
150mm Swivel Castor, 700kg Capacity | Polyurethane Tyre Wheel, Ball bearing (HST150PC2B)
£102.65150mm Top Plate Swivel Castor (Black Painted Fabri... Read Morecated Steel) with 120mm x 60mm or 105x80mm Fixing Bolt Hole Centres. The wheel has a Polyurethane Tyre on a Cast Iron Centre Wheel with Ball Bearings and the load capacity is 700kg and 4km/h (walking speed) using manual propulsion. - In Stock
200mm Fixed Castor, 1090kg Capacity| Cast Iron Wheel, Roller Bearing (888CIB)
£66.01200mm Top Plate Fixed Castor with 140x73mm Bolt Ho... Read Morele Centres each suiting an M10 fixing bolt. The heavy duty bracket is made from pressed steel with a bright zinc finish. The Cast Iron Wheel contains a Roller Bearing to reducing rolling resistance. The Load Capacity of this castor is 1090kg.Cast Iron Castor Wheels are a great choice for many rough service applications because they are strong, shock resistant and have a long working life. They have a very low tractive resistance which aids in the ease of movement and are not susceptible to picking up swarf and other floor debris which may hamper the performance of other Castor Wheel materials. - In Stock
150mm Swivel Castor with Brake, 1000kg Capacity | Polyurethane Tyre Wheel, Ball bearing (K2BT150PC2B)
£281.68150mm Twin Wheel Extra Heavy Duty Fabricated Sw... Read Moreivel Castor with Brake. The swivel head turns on thrust and taper roller bearings for extra strength and the bracket is finished in black epoxy paint.
The braking mechanism on this product is a wheel brake only. This means that when the brake is applied the brake acts only on the castor wheels while the castor's swivel head is free to turn.
This castor has a top plate measuring 170mm x 170mm with bolt hole spacings of 130mm x 130mm drilled to 13mm diameter. The two Polyurethane Tyre on a Cast Iron Centre wheels each have ball bearings fitted to reduce the rolling resistance.
The castor has a 1,000kg Load Rating at 4km/h
- In Stock
80mm Stainless Steel Swivel Castor With Brake, 120kg Capacity | Rubber Tyre Wheel, Roller Bearing (MSS080RNBBR)
£24.6380mm Top Plate Swivel Castor with Brake (Stainless... Read More Steel Castor) with 80x60 Hole Centres. Blue Rubber Tyre / Nylon Centre Wheel with Roller Bearing. Load Capacity = 120kg - In Stock
100mm Swivel Castor, 125kg Capacity | Polypropylene Wheel, Plain Bore (LSV100PP)
£6.38100mm Swivel Castor with a White Polypropylene Whe... Read Moreel fitted. It has 80x60mm fixing bolt hole centres and the load capacity of this castor is 125kg using manual propulsion at 4km/hThis is one of our most popular castors and the White Polypropylene wheel is non-marking and won't damage concrete floors. Because it is a hard tread it has the lowest rolling and swivelling resistance. It is ideal as a new component or a replacement caster for most general purpose domestic or industrial castor where the travel speed of the castor generally does not exceed walking speed. - In Stock
200mm Swivel Castor, 1090kg Capacity | Cast Iron Wheel, Roller Bearing (855CIB)
£98.46200mm Top Plate Swivel Castor with 140x105mm Bolt ... Read MoreHole Centres each suiting an M10 fixing bolt. The heavy duty bracket has a swivel head with roller ball bearings and has a grease nipple. The pressed steel frame has a bright zinc finish. This castor houses a quality Flexello Cast Iron Wheel that has a Roller Bearing fitted into the central bore to reducing rolling resistance. The Load Capacity of this castor is 1090kg. - In Stock
Jacking Castor, 200mm, Cast Iron Wheel, Roller Bearing, 1090kg (JA8CIB)
Original price was: £434.78.£422.12Current price is: £422.12. Sale!200mm Jacking Castor (Genuine Flexello) has 76mm l... Read Moreift with 114.3mm x 63.5mm Hole Centres. The solid cast iron wheel is fitted with a Roller Bearing. Load Capacity = 1090kg.It is important to note that the minimum Jacking Castor load capacity is obtained by calculating the total weight to be carried (unladen unit weight + maximum load) and dividing that by 2. This is because the operation of Jacking Castors means that each castor can be subjected to half the total weight.Most applications require 4 Jacking Castors and in this situation, the recommended total maximum load that can be carried by 4 Jacking Castors is 2,180kg. - In Stock
125mm Swivel Castor, 250kg Capacity | Polyurethane Tyre Wheel, Roller Bearing (MSK125PN1B)
£15.74125mm Top Plate Swivel Castor (Pressed Steel) with... Read More 80x60mm Hole Centres and 157mm Overall Height. Polyurethane Tyre caster wheel with a nylon Centre Wheel and 34mm Tread Width with Roller Bearing. Load Capacity = 250kg.This castor is made from heavy gauge pressed steel with a 5mm thick Top Plate and 4mm Castor Forks. It is a product that is built to last and is great for arduous applications. - Out of Stock - On the Way
125mm Swivel Castor, 150kg Capacity | Polyurethane Tyre Wheel, Ball Bearing (1321088)
£13.84125mm Bolt Hole Swivel Castor (Pressed Steel) w... Read Moreith 10mm Bolt Hole. Polyurethane Tyre / Nylon Centre Wheel with Ball Bearing. Load Capacity = 150kg
This product has been discontinued. The closest alternative is our 1321768 which is the same bracket and wheel but with a roller bearing rather than a ball bearing.
- In Stock
250mm Fixed Castor, 1150kg Capacity | Cast Iron Wheel, Ball bearing (HKF25025441)
£85.68250mm Top Plate Fixed Castor (Fabricated Steel) wi... Read Moreth 105x80 Hole Centres. Cast Iron Wheel with Ball bearing. Load Capacity = 1150kg - In Stock
150mm Swivel Castor with Brake, 730kg Capacity | Polyurethane Tyre Wheel, Ball Bearing (TSH150PT2HF)
£165.98150mm Heavy Duty Top Plate Swivel Castor With Swiv... Read Moreel & Wheel Brake (Fabricated Castor) with 105x80 Hole Centres. Polyurethane Tyre / Cast Iron Centre Wheel with Ball Bearing. Load Capacity = 730kgFeatures of the H Series Castor- The Genuine Revvo H Series castor is made from heavy gauge forged steel with a hardened ball race in the swivel race that serve as both thrust and radial bearings.
- The swivel head comes with a metal swivel seal and hydraulic grease nipple
- The closed base of the swivel ring prevents downward escape of lubricant
- The side plates are press formed to a cylindrical shape to give the best strength to weight ratio
- Out of Stock - On the Way
125mm Swivel Castor With Brake, 80kg Capacity | Polyurethane Tyre Wheel, Ball bearing (1322197)
£11.73125mm Swivel Castor with Total Stop Brake that bra... Read Morekes both the wheel and the swivel action. The castor is fitted with an M12x35mm Threaded Stem.This pressed steel castor bracket houses a non-marking Grey Rubber Tyre wheel with a Polypropylene Centre Wheel containing a precision ball bearing and a tread hardness of 75 Shore A. The wheel is fitted with a thread guard and the castor has a Load Capacity of 80kg - In Stock
100mm Fixed Castor, 270kg Capacity | Nylon Wheel, Ball Bearing (KFMG100NYB)
£24.64100mm Top Plate Fixed Castor (Fabricated Steel) wi... Read Moreth 105x80 Hole Centres. Nylon Wheel with Ball Bearing. Load Capacity = 270kg - In Stock
125mm Swivel Castor, 350kg Capacity | Nylon Wheel, Ball Bearing (KSMG125NYB)
£33.95125mm Top Plate Swivel Castor (Fabricated Steel) w... Read Moreith 105x80 Hole Centres. Nylon Wheel with Ball Bearing. Load Capacity = 350kg - In Stock
200mm Swivel Castor with Brake, 1500kg Capacity | Nylon Wheel, Ball Bearing (TSH200NY2HF)
£166.85200mm Heavy Duty Top Plate Swivel Castor With S... Read Morewivel & Wheel Brake (Fabricated Castor) with 105x80 Hole Centres. Nylon Wheel with Ball Bearing. Load Capacity = 1500kg
Features of the H Series Castor
- The Genuine Revvo H Series castor is made from heavy gauge forged steel with a hardened ball race in the swivel race that serve as both thrust and radial bearings.
- The swivel head comes with a metal swivel seal and hydraulic grease nipple
- The closed base of the swivel ring prevents downward escape of lubricant
- The side plates are press formed to a cylindrical shape to give the best strength to weight ratio
- Out of Stock - On the Way
125mm Stainless Steel Swivel Castor, 150kg Capacity | Polyurethane Tyre Wheel, Roller Bearing (MSS125PNB)
£29.53125mm Top Plate Swivel Castor (Stainless Steel Cas... Read Moretor) with 80x60 Hole Centres. Polyurethane Tyre / Nylon Centre Wheel with Roller Bearing. Load Capacity = 150kg - In Stock
100mm Swivel Castor, 100kg Capacity | Rubber Tyre Wheel, Ball Bearing (KAHS100TPR)
£9.86This apparatu... Read Mores / institutional castor comes with a 100mm Grey Thermoplastic Rubber Tyre Wheel on a nylon centre fitted into a 10mm Single Bolt Hole Swivel Castor (Pressed Steel Frame) with a double ball race swivel head. The load capacity of this castor is 100kg using manual propulsion at 4km/h
This castor is fitted with a grey rubber tyre that will not mark or damage the floor and is ideal for most general, light duty castor purposes such as trolley castors or dolly castors. The Ball Bearing in the wheel provides excellent rolling performance.
Single Bolt Hole castors can have a expander tube fitting (purchased separately) attached to insert into hollow square or round tubing. See our section on Expander Tube Fittings
- Out of Stock - On the Way
150mm Swivel Castor with Brake, 700kg Capacity | Polyurethane Tyre Wheel, Ball bearing (HKB15020241)
£122.82150mm Top Plate Swivel Castor With Brake (Fabricat... Read Moreed Steel) with 105x80 Hole Centres. Polyurethane Tyre / Cast Iron Centre Wheel with Ball bearing. Load Capacity = 700kg - In Stock
200mm Swivel Castor, 1500kg Capacity | Polyurethane Tyre Wheel, Roller Bearing (2SH200PT15)
£287.07200mm Heavy Duty Top Plate Swivel Castor (Fabricat... Read Moreed Castor - Twin Wheel) with 105x80 Hole Centres. Polyurethane Tyre / Cast Iron Centre Wheel with Roller Bearing. Load Capacity = 1500kg - In Stock
100mm Swivel Castor, 160kg Capacity | Rubber Tyre Wheel, Ball Bearing (MSV100RN2B)
£10.14100mm Swivel Castor bracket (Pressed Steel) fitted... Read More with a Blue Elastic Rubber Tyre on a nylon centre wheel with a ball bearing. The Swivel Bracket has a 4 hole top plate with 80x60mm bolt hole spacing. The load capacity of this castor is 160kg using manual propulsion at 4km/h (walking speed)The Blue Elastic Rubber Tyre offers a higher load capacity than standard grey or black rubber tyres and is non-marking, gentle on floors and the rubber absorbs vibrations whilst in motion making this a low noise option. The ball bearing lowers the rolling resistance to reduce the effort required to move the castors. Together with the strong bracket that has a double ball race in the swivel head makes this castors a great performer and one of our most popular products.This castor is often used on flight cases as well as in many medical, industrial and domestic applications. - In Stock
100mm High Temperature Swivel Castor With Brake, 125kg Capacity | Phenolic Resin Wheel, Plain Bore (MSX100HTBHBR)
£19.88100mm Single Bolt Hole Swivel Castor (Pressed Stee... Read Morel) with Swivel & Wheel Brake. High Temperature Phenolic Wheel (Plain Bore) - Rated to +280 degrees C. Load Capacity = 125kg - Out of Stock - On the Way
100mm Swivel Castor, 225kg Capacity | Polyurethane Tyre Wheel, Plain Bore (TS4100PT04)
£35.70100mm Top Plate Swivel Castor (Pressed Steel). Wit... Read Moreh a top plate of 135x110mm and 105x80mm bolt hole centres, this castor has a larger top plate than most 100mm castors. The wheel is a Revvo 100PT14 which is a Polyurethane Tyre on a Cast Iron Wheel with smooth Plain Bore. Load Capacity = 225Kg - Out of Stock - On the Way
150mm Swivel Castor, 600kg Capacity | Polyurethane Tyre Wheel, Roller Bearing (661PNB)
£46.46150mm Top Plate Swivel Castor (Pressed Steel) with... Read More 140x105 Hole Centres. Polyurethane Tyre / Nylon Centre Wheel with Roller Bearing. Load Capacity = 600kg - In Stock
100mm Swivel Castor, 150kg Capacity | Rubber Tyre Wheel, Roller Bearing (TSH100RU1H)
£85.72100mm Heavy Duty Top Plate Swivel Castor (Fabri... Read Morecated Castor) with 105x80 Hole Centres. Rubber Tyre / Cast Iron Centre Wheel with Roller Bearing. Load Capacity = 150kg
Features of the H Series Castor
- The Genuine Revvo H Series castor is made from heavy gauge forged steel with a hardened ball race in the swivel race that serve as both thrust and radial bearings.
- The swivel head comes with a metal swivel seal and hydraulic grease nipple
- The closed base of the swivel ring prevents downward escape of lubricant
- The side plates are press formed to a cylindrical shape to give the best strength to weight ratio
- A four way direction lock can be purchased and fitted to the castor 9999-0181
- In Stock
200mm Swivel Castor, 250kg Capacity | Polyurethane Tyre Wheel, Roller Bearing (MSVH200PN1B)
£30.08200mm Single Bolt Hole (12mm) Swivel Castor (Press... Read Moreed Steel). Red Polyurethane Tyre / Nylon Centre Wheel with Roller Bearing. Load Capacity = 250kg - In Stock
125mm Fixed Castor, 325kg Capacity | Polyurethane Tyre Wheel, Roller Bearing (588SUB)
£41.87125mm Top Plate Fixed Castor (Pressed Steel) with ... Read More121x80 Hole Centres. Polyurethane Tyre / Cast Iron Centre Wheel with Roller Bearing. Load Capacity = 325kg - In Stock
125mm Swivel Castor with Brake, 160kg Capacity | Polypropylene Wheel, Plain Bore (LSV125PPBR)
£11.22125mm Top Plate swivel and Brake Castor with a Whi... Read Morete Polypropylene wheel. It has 80x60mm fixing bolt hole centres and the load capacity is 160kg using manual propulsion at 4km/hThis is one of our most popular castors and the White Polypropylene wheel is non-marking and won’t damage concrete floors. Because it is a hard tread it has the lowest rolling and swivelling resistance. It is ideal as a new component or a replacement caster for most general purpose domestic or industrial castor where the travel speed of the castor generally does not exceed walking speed. - In Stock
200mm Swivel Castor, 1150kg Capacity | Cast Iron Wheel, Roller Bearing (TSH200CI15)
£99.23200mm Heavy Duty Top Plate Swivel Castor (Fabricat... Read Moreed Castor) with 105x80 Hole Centres. Cast Iron Wheel with Roller Bearing. Load Capacity = 1150kg - In Stock
125mm Fixed Castor, 200kg Capacity | Nylon Wheel, Roller Bearing (MFV125NY1B)
£8.20125mm White Nylon Wheel with a roller bearing f... Read Moreitted into a pressed steel Fixed castor bracket. The Fixed Bracket has a 4 hole top plate with 80x60mm bolt hole spacing. The load capacity of this castor is 200kg using manual propulsion at 4km/h (walking speed)
The Nylon Wheel has a low tractive resistance making it easier to get moving compared with softer rubber tread wheels. Together with the strength of nylon and because it wont damage concrete floors, makes nylon wheel castors probably the most popular choice. The roller bearing lowers the rolling resistance to reduce the effort required to move the castors. Put this wheel into a strong bracket makes this castor a great choice for the widest range of industrial and domestic applications.
- In Stock
125mm Swivel Castor with Brake, 250kg Capacity | Rubber Tyre Wheel, Ball bearing, (HKB12520341)
£111.12125mm Top Plate Swivel Castor With Brake (Fabricat... Read Moreed Steel) with 105x80 Hole Centres. Elastic Rubber Tyre / Aluminium Centre Wheel with Ball bearing. Load Capacity = 250kg - In Stock
150mm Swivel Castor with Brake, 500kg Capacity | Polyurethane Tyre Wheel, Roller Bearing (622SUBTSB)
£74.11150mm Top Plate Swivel Castor and Swivel & Whe... Read Moreel Brake (Pressed Steel) with 105x80mm Hole Centres. Polyurethane Tyre / Cast Iron Centre Wheel with Roller Bearing. Load Capacity = 500kg - In Stock
200mm Stainless Steel Swivel Castor With Brake, 300kg Capacity | Nylon Wheel, Plain Bore (MSS200NYBR)
£56.06200mm Top Plate Swivel Castor With Brake (Stainles... Read Mores Steel Castor) with 105x80 Hole Centres. Nylon Wheel with Plain Bore. Load Capacity = 300kg - In Stock
100mm Fixed Castor, 300kg Capacity | Polyurethane Tyre Wheel, Ball bearing (KFMG100CRPCB)
£40.06100mm Fixed Castor (Fabricated Steel) and Crown Tr... Read Moreead Polyurethane Tyred / Cast Iron Centre Wheel with Ball Bearing. Load Capacity = 300kg - In Stock
125mm Fixed Castor, 1100kg Capacity | Polyurethane Tyre Wheel, Ball bearing (GXT125ARFHUD)
£181.18125mm Polyure... Read Morethane tyre Wheel with an aluminium centre fitted into an extra strong Fabricated Top Plate Fixed Castor with 148/132x111/99mm bolt hole centres. The slotted bolt holes cover the European and UK standard 140x105mm bolt holes. The load capacity of this castor is 1100kg at 4km/h
This high performance castor is fitted with a quality polyurethane tyre wheel that will not mark the floor. An extra strong welded castor frame that is powder coated and fitted with a high performance castor wheel containing two ball bearings that turns on a specially designed integrated axle shaft arrangement makes this castor one of the most durable in the market. Perfect for moving very heavy loads where strength, durability and performance are critical
- Out of Stock - On the Way
125mm Fixed Castor, 1500kg Capacity | Cast Nylon Wheel, Ball bearing (GXT125ARFMCD)
£145.47125mm Machine... Read More Cast Nylon Wheel fitted into an extra strong Fabricated Top Plate Fixed Castor with 148/132x111/99mm bolt hole centres. The slotted bolt holes cover the European and UK standard 140x105mm bolt holes. The load capacity of this castor is 1500kg at 4km/h
This high performance castor is fitted with a white machine cast nylon wheel that will not mark the floor. An extra strong welded castor frame that is powder coated and fitted with a high performance castor wheel containing two ball bearings that turns on a specially designed integrated axle shaft arrangement makes this castor one of the most durable in the market. Perfect for moving very heavy loads where strength, durability and performance are critical
- In Stock
100mm Swivel Castor, 300kg Capacity | Polyurethane Tyre Wheel, Ball bearing (KSMG100CRPCB)
£41.16100mm Swivel Castor (Fabricated Steel) with 4 hole... Read More top plate and 105X80mm bolt hole centres. This castor comes with a Crown Tread Polyurethane Tyre on a cast iron centre wheel complete with Ball Bearing. Load Capacity = 300kg