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Description
75mm Fixed Castor — Grey Rubber on Polypropylene Wheel
This 75mm fixed castor is a robust, top-plate-mounted wheel unit designed for applications where straight-line movement and load stability are the priority. Fitted with a grey rubber tread bonded to a polypropylene core, it delivers smooth, quiet rolling across hard and semi-hard floor surfaces while protecting against surface marking and wear. With a rated load capacity of 70 kg per castor, it is well suited to trolleys, shelving units, industrial carts, workshop equipment, and commercial furniture across warehousing, retail, manufacturing, and hospitality environments.
Product Overview
Fixed castors provide directional stability that swivel castors cannot match. By eliminating rotational movement at the head, they keep loads tracking in a straight, controlled path — an essential quality when manoeuvring heavy equipment through narrow aisles, along production lines, or across warehouse floors. This unit pairs that inherent rigidity with a grey rubber tread that absorbs minor floor irregularities, reduces rolling noise, and resists the kind of surface damage that hard plastic wheels can cause over time.
The pressed steel top plate, finished with a zinc-plated coating for corrosion resistance, mounts securely via four bolt holes and provides a stable, low-profile fixing point. The plain bearing keeps the design simple, reliable, and easy to maintain — making this castor a practical, long-service choice for both new builds and replacement applications.
Key Features
- 70 kg load capacity per castor — engineered for reliable performance under sustained working loads.
- Grey rubber tread on polypropylene core — provides a non-marking, floor-friendly rolling surface with good grip and noise reduction.
- 75 mm wheel diameter — balances manoeuvrability with ground clearance across a wide range of equipment types.
- 24 mm tread width — broad contact surface for stable load distribution and smooth directional travel.
- Pressed steel zinc-plated top plate — corrosion-resistant fixing plate for secure, long-term mounting.
- 4-bolt-hole fixing pattern — standard configuration compatible with a wide range of equipment bases and frames.
- 100 mm total castor height — compact profile suitable for low-clearance applications.
- Plain bearing — low-maintenance design for consistent, dependable rolling performance.
- Fixed (non-swivel) head — maintains straight-line directional control under load.
Technical Specifications
| Specification | Detail |
|---|---|
| Castor Type | Fixed (Top Plate) |
| Bearing Type | Plain |
| Wheel Diameter | 75 mm |
| Tread Width | 24 mm |
| Wheel Material | Grey Rubber on Black Polypropylene |
| Wheel Colour | Grey |
| Total Castor Height | 100 mm |
| Load Capacity (per castor) | 70 kg |
| Max Load Capacity (4 castors) | 210 kg* |
| Plate Type | Pressed Steel, Zinc Plated |
| Plate Length | 60 mm |
| Plate Width | 67 mm |
| Plate Hole Centres (Length) | 48 / 38 mm |
| Plate Hole Centres (Width) | 48 / 38 mm |
| Plate Hole Diameter | 6 mm |
| Number of Bolt Holes | 4 |
| Fixing Method | Top Plate, 4-Bolt-Hole |
* Maximum combined load across a 4-castor configuration. Actual capacity may vary depending on load distribution, floor conditions, and application.
Typical Applications
Warehousing & Logistics
Ideal for stock trolleys, picking carts, and pallet dollies where straight-line tracking and load stability are essential across concrete and resin floors.
Manufacturing & Workshops
Suited to tool carts, equipment stands, and assembly line trolleys that require controlled directional movement in confined production spaces.
Retail & Hospitality
Appropriate for display units, service trolleys, and catering equipment where quiet rolling and floor protection are important considerations.
Commercial Furniture
A practical choice for shelving, storage units, and mobile workstations in offices, stockrooms, and back-of-house environments.
Frequently Asked Questions
What is the difference between a fixed castor and a swivel castor?
A fixed castor has a static head that allows movement in one direction only — forwards and backwards. A swivel castor rotates 360° to allow multi-directional movement. Fixed castors are typically used in combination with swivel castors: fixed units at the rear provide straight-line stability, while swivel units at the front allow steering. For applications requiring purely directional travel, all-fixed configurations are also common.
Will this castor mark or damage my floor?
The grey rubber tread is a non-marking compound, making it suitable for use on finished concrete, vinyl, timber, and tile surfaces without leaving scuff marks or residue. The polypropylene core adds structural rigidity without the hardness of a fully plastic wheel, further reducing the risk of surface indentation under static loads.
How do I fit this castor to my equipment?
This castor uses a 4-bolt-hole top plate fixing method. The plate measures 60 mm (length) x 67 mm (width), with hole centres of 48/38 mm and a bolt hole diameter of 6 mm. To fit, align the plate with the pre-drilled holes on your equipment base and secure using four M6 bolts (not supplied). Ensure the mounting surface is flat and structurally sound to achieve the rated load capacity.
Can I use this castor outdoors or in wet environments?
The zinc-plated steel top plate offers a degree of corrosion resistance suitable for occasional exposure to moisture. However, this castor is primarily designed for indoor use on dry or lightly damp surfaces. For consistently wet, outdoor, or high-humidity environments, a stainless steel or fully plastic castor with sealed bearings would be a more appropriate specification.
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