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Description
Pressed Steel Swivel Castors with White Nylon Wheel — 50mm & 75mm
These pressed steel swivel castors are precision-engineered for smooth, reliable mobility across a wide range of light-duty and medium-duty applications. Fitted with a hard-wearing white nylon wheel and secured via a four-hole top plate, they are designed to mount cleanly onto flat surfaces and deliver consistent, quiet rolling performance. Available in two wheel diameters — 50mm and 75mm — each size is optimised for a specific load capacity and height requirement, making them a versatile choice for furniture makers, retailers, workshop operators, and facilities managers.
Quick Comparison — All Options at a Glance
| Specification | 50mm Wheel | 75mm Wheel |
|---|---|---|
| Wheel Diameter | 50 mm | 75 mm |
| Tread Width | 22 mm | 22 mm |
| Total Height | 72 mm | 100 mm |
| Swivel Radius | 45 mm | 68 mm |
| Max Load Capacity | 65 kg | 75 kg |
| Wheel Material | White Nylon | White Nylon (75 Shore D) |
| Bearing Type | Plain Bearing | Plain Bearing |
| Top Plate Size | 60 × 60 mm | 60 × 60 mm |
| Hole Centres (L × W) | 48 × 38 mm | 48 × 38 mm |
| Hole Diameter | 6 mm | 6 mm |
| Swivel Head Type | Pressed Steel | Pressed Steel |
| Fitting Method | 4-Hole Top Plate | 4-Hole Top Plate |
* All measurements are nominal. Load capacities stated are per individual castor. For equipment load ratings, divide total equipment weight by the number of castors fitted.
50mm Wheel / 65 kg Load Capacity
Full Technical Specifications
| Specification | Detail |
|---|---|
| Wheel Diameter | 50 mm |
| Tread Width | 22 mm |
| Total Height (floor to top of plate) | 72 mm |
| Swivel Radius | 45 mm |
| Max Load Capacity (per castor) | 65 kg |
| Wheel Material | White Nylon |
| Bearing Type | Plain Bearing |
| Swivel Head Construction | Pressed Steel |
| Top Plate Dimensions | 60 mm × 60 mm |
| Hole Centres (Length × Width) | 48 mm × 38 mm |
| Hole Diameter | 6 mm |
| Number of Fixing Holes | 4 |
| Fitting Method | Four-Hole Top Plate |
Typical Applications — 50mm
Furniture & Retail Displays
- Light display units and shelving trolleys
- Retail gondola bases and point-of-sale stands
- Showroom furniture requiring low-profile mobility
- Domestic furniture such as side tables and ottomans
Office & Hospitality
- Office equipment trolleys and filing pedestals
- Hotel luggage racks and service trolleys
- Catering equipment with light load requirements
- Reception area furniture and mobile partitions
Workshop & Storage
- Small tool cabinets and parts bins
- Lightweight storage crates and tote boxes
- Workbench accessories and mobile jig boards
- Garage and hobby workshop equipment
Healthcare & Education
- Medical supply trolleys with light loads
- School and classroom mobile storage units
- Laboratory equipment carts
- Clinic and dental practice auxiliary trolleys
75mm Wheel / 75 kg Load Capacity
Full Technical Specifications
| Specification | Detail |
|---|---|
| Wheel Diameter | 75 mm |
| Tread Width | 22 mm |
| Total Height (floor to top of plate) | 100 mm |
| Swivel Radius | 68 mm |
| Max Load Capacity (per castor) | 75 kg |
| Wheel Material | White Nylon (75 Shore D hardness) |
| Bearing Type | Plain Bearing |
| Swivel Head Construction | Pressed Steel |
| Top Plate Dimensions | 60 mm × 60 mm |
| Hole Centres (Length × Width) | 48 mm × 38 mm |
| Hole Diameter | 6 mm |
| Number of Fixing Holes | 4 |
| Fitting Method | Four-Hole Top Plate |
Typical Applications — 75mm
Industrial & Warehouse
- Medium-duty warehouse picking trolleys
- Packing bench and dispatch station mobility
- Industrial shelving units and racking bases
- Assembly line component carts
Retail & Commercial Fit-Out
- Heavy retail display units and gondola systems
- Commercial kitchen prep trolleys
- Shop fitting and visual merchandising fixtures
- Stockroom and back-of-house mobile shelving
Workshop & Trade
- Tool chests and mechanic roller cabinets
- Welding and fabrication equipment trolleys
- Trade show display structures
- Portable workstations and mobile benches
Healthcare & Facilities
- Hospital ward equipment trolleys
- Facilities management cleaning and janitorial carts
- Care home mobility aids and equipment stands
- Pharmacy and dispensary mobile storage
Why These Castors Stand Out
The pressed steel swivel head provides a robust, rigid mounting platform that resists flex under load, ensuring the castor tracks true and the wheel maintains consistent floor contact. The white nylon wheel is hard-wearing, non-marking on most smooth floor surfaces, and performs reliably on concrete, tile, vinyl, and hardwood. The four-hole top plate design distributes fixing stress evenly across the mounting surface, reducing the risk of pull-through on thinner panels. The plain bearing construction keeps the unit lightweight and maintenance-free, making it well suited to applications where regular servicing is impractical.
Both sizes share an identical top plate footprint (60 × 60 mm, 48 × 38 mm hole centres, 6 mm holes), which means you can upgrade from the 50mm to the 75mm option without re-drilling your equipment — a significant advantage when retrofitting or standardising across a fleet of trolleys or furniture pieces.
Frequently Asked Questions
What is the difference between the 50mm and 75mm options, and how do I choose?
The primary differences are wheel diameter, total height, swivel radius, and load capacity. The 50mm castor stands 72mm tall and supports up to 65kg per unit, making it ideal for lower-profile furniture and lighter equipment. The 75mm castor stands 100mm tall, has a wider swivel arc (68mm radius), and supports up to 75kg per unit, making it better suited to heavier trolleys and equipment that benefits from a higher ground clearance. Both share the same top plate dimensions, so the choice comes down to the height and load requirements of your specific application.
Will the white nylon wheel mark or scratch my floor?
White nylon wheels are generally considered non-marking on smooth, sealed floor surfaces including vinyl, tile, laminate, and sealed concrete. They are hard (75 Shore D on the 75mm variant) and perform best on flat, clean surfaces. On rough or uneven floors, the hard nylon may transmit more vibration than a softer rubber or polyurethane wheel. If your floor surface is particularly sensitive or delicate, we recommend testing a single castor before fitting a full set.
How do I fit these castors, and what fixings do I need?
These castors are fitted using the four-hole top plate. The plate measures 60 × 60 mm with hole centres of 48mm (length) by 38mm (width) and a hole diameter of 6mm. You will need four M6 bolts, nuts, and washers (not supplied) of an appropriate length for your mounting panel thickness. Mark and drill four 6mm holes in your equipment base using the plate as a template, then bolt through securely. Ensure the mounting surface is flat and rigid to achieve the full rated load capacity.
Can I mix 50mm and 75mm castors on the same piece of equipment?
Mixing castor sizes on the same unit is not recommended. Different total heights (72mm vs 100mm) will cause the equipment to sit at an angle, placing uneven stress on the frame and reducing stability. For best results, fit four castors of the same size. If you need to increase height or load capacity, replace all castors simultaneously with the larger 75mm option.
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