Pressed Steel Fixed Castors with Black Rubber on Polypropylene Wheel - 80mm to 150mm

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Description

Pressed Steel Fixed Castors with Black Rubber on Polypropylene Wheel

Four Sizes: 80mm — 100mm — 125mm — 150mm  |  Load Capacity: 60kg to 130kg per Castor  |  UK Stock


These pressed steel fixed castors are robust, top-plate-mounted wheels designed for reliable, straight-line mobility across a wide range of commercial, industrial, and institutional environments. Constructed with a zinc-plated pressed steel bracket, a black rubber tread bonded to a polypropylene core and a precision ball journal bearing, they deliver smooth, quiet rolling performance on hard floors, concrete, and light-duty uneven surfaces. Available in four wheel diameters — 80mm, 100mm, 125mm, and 150mm — with load ratings from 60kg to 130kg per castor, this range covers everything from light furniture and storage units to demanding workshop trolleys and institutional equipment. All four sizes share a standardised 100mm x 85mm four-hole top plate with dual hole-centre spacing of 60mm and 80mm, making them straightforward to fit and easy to replace across multiple applications.

Compare All Options — Full Specifications at a Glance
Specification 80 mm 100 mm 125 mm 150 mm
Wheel Diameter (mm) 80 100 125 150
Total Castor Height (mm) 106 127 157 181
Load Capacity per Castor (kg) 60 75 110 130
Max Load — Set of 4 (kg) 180 225 330 390
Tread Width (mm) 25 30 37.5 40
Tread Hardness (Shore A) 85 85 85 85
Wheel Material Rubber on Polypropylene Rubber on Polypropylene Rubber on Polypropylene Rubber on Polypropylene
Wheel Colour Black Black Black Black
Bearing Type Ball Journal Ball Journal Ball Journal Ball Journal
Castor Type Fixed / Top Plate Fixed / Top Plate Fixed / Top Plate Fixed / Top Plate
Plate Length (mm) 100 100 100 100
Plate Width (mm) 85 85 85 85
Hole Centres — Length (mm) 80 80 80 80
Hole Centres — Width (mm) 60 60 60 60
Dual Hole Centre Spacing 60 / 80 60 / 80 60 / 80 60 / 80
Plate Hole Diameter (mm) 10 10 10 10
Number of Fixing Holes 4 4 4 4
Bracket Finish Zinc Plated Zinc Plated Zinc Plated Zinc Plated

* Load ratings are per individual castor. To calculate the required load capacity per castor, divide the total equipment weight (including contents) by the number of castors fitted — typically four. Always apply an appropriate safety margin to account for dynamic loads, acceleration forces, and uneven weight distribution.

Detailed Specifications and Applications by Size

80mm Fixed Castor — 60kg Load Capacity

Compact and lightweight — ideal for light furniture, storage units, and domestic equipment
Technical Specifications
Castor Type Fixed — Top Plate Fitting
Wheel Diameter 80 mm
Total Castor Height 106 mm
Load Capacity (per castor) 60 kg
Max Load — Set of 4 180 kg
Wheel Material Black Rubber on Polypropylene
Tread Width 25 mm
Tread Hardness 85 Shore A
Bearing Type Ball Journal
Wheel Colour Black
Plate Length 100 mm
Plate Width 85 mm
Hole Centres (Dual Spacing) 60 mm / 80 mm
Plate Hole Diameter 10 mm
Number of Fixing Holes 4
Bracket Material Pressed Steel
Bracket Finish White Zinc Plated
Typical Applications
  • Light domestic furniture — chairs, side tables, and storage cabinets requiring occasional repositioning
  • Small storage trolleys and utility carts in home workshops or garages
  • Display units and point-of-sale stands in retail environments with smooth flooring
  • Medical and care-home equipment such as bedside lockers and lightweight trolleys
  • Office furniture including printer stands, filing pedestals, and mobile shelving
  • Catering and hospitality trolleys where compact, low-profile castors are required

The 80mm option is the most compact in this range, making it the preferred choice where floor clearance is limited or where a lower overall equipment height is required. Its 25mm tread width distributes load effectively across light-duty surfaces without marking or indenting softer floor coverings.

100mm Fixed Castor — 75kg Load Capacity

Versatile general-purpose castor for everyday commercial and light industrial use
Technical Specifications
Castor Type Fixed — Top Plate Fitting
Wheel Diameter 100 mm
Total Castor Height 127 mm
Load Capacity (per castor) 75 kg
Max Load — Set of 4 225 kg
Wheel Material Black Rubber on Polypropylene
Tread Width 30 mm
Tread Hardness 85 Shore A
Bearing Type Ball Journal
Wheel Colour Black
Plate Length 100 mm
Plate Width 85 mm
Hole Centres (Dual Spacing) 60 mm / 80 mm
Plate Hole Diameter 10 mm
Number of Fixing Holes 4
Bracket Material Pressed Steel
Bracket Finish White Zinc Plated
Typical Applications
  • Workshop tool carts and equipment trolleys requiring smooth, controlled movement on concrete or tiled floors
  • Warehouse picking trolleys and order-fulfilment carts in distribution centres
  • Retail gondola units, stockroom shelving, and merchandise display stands
  • Catering and food-service trolleys in commercial kitchens and hospitality venues
  • School and educational furniture — mobile resource trolleys, AV carts, and library units
  • Light industrial assembly benches and component transport trolleys

The 100mm is the most widely specified size in this range, offering an excellent balance between load capacity, rolling ease, and overall equipment height. The wider 30mm tread improves stability under load and reduces rolling resistance on slightly uneven surfaces compared to the 80mm option.

125mm Fixed Castor — 110kg Load Capacity

High-performance castor for demanding industrial, logistics, and institutional environments
Technical Specifications
Castor Type Fixed — Top Plate Fitting
Wheel Diameter 125 mm
Total Castor Height 157 mm
Load Capacity (per castor) 110 kg
Max Load — Set of 4 330 kg
Wheel Material Black Rubber on Polypropylene
Tread Width 37.5 mm
Tread Hardness 85 Shore A
Bearing Type Ball Journal
Wheel Colour Black
Plate Length 100 mm
Plate Width 85 mm
Hole Centres (Dual Spacing) 60 mm / 80 mm
Plate Hole Diameter 10 mm
Number of Fixing Holes 4
Bracket Material Pressed Steel
Bracket Finish White Zinc Plated
Typical Applications
  • Heavy-duty workshop and engineering trolleys carrying tools, parts, and machinery components
  • Industrial laundry and linen trolleys in hotels, hospitals, and care facilities
  • Warehouse platform trucks and goods-handling equipment in logistics and fulfilment operations
  • Institutional catering equipment — large-capacity food service trolleys and heated transport units
  • Manufacturing and production line component carriers requiring stable, directional movement
  • Mortuary and healthcare transfer equipment where controlled, straight-line movement is essential

The 125mm castor bridges the gap between general-purpose and heavy-duty applications. Its 37.5mm tread width and 110kg per-castor rating make it well suited to environments where loads are substantial but floor surfaces remain reasonably smooth. The larger wheel diameter also improves rollability over minor floor imperfections and threshold strips.

150mm Fixed Castor — 130kg Load Capacity

Maximum capacity — built for the most demanding commercial and industrial applications
Technical Specifications
Castor Type Fixed — Top Plate Fitting
Wheel Diameter 150 mm
Total Castor Height 181 mm
Load Capacity (per castor) 130 kg
Max Load — Set of 4 390 kg
Wheel Material Black Rubber on Polypropylene
Tread Width 40 mm
Tread Hardness 85 Shore A
Bearing Type Ball Journal
Wheel Colour Black
Plate Length 100 mm
Plate Width 85 mm
Hole Centres (Dual Spacing) 60 mm / 80 mm
Plate Hole Diameter 10 mm
Number of Fixing Holes 4
Bracket Material Pressed Steel
Bracket Finish White Zinc Plated
Typical Applications
  • Heavy industrial platform trucks and goods-movement equipment in warehousing and logistics
  • Large-capacity laundry and linen trolleys in commercial laundry facilities and large hotels
  • Mortuary, post-mortem, and clinical transfer equipment requiring maximum load stability
  • Heavy engineering and fabrication workshops — component transport over concrete and workshop floors
  • Bulk storage and archive trolleys in libraries, records management, and document storage facilities
  • Agricultural and horticultural equipment — produce transport trolleys in packhouses and cold stores

The 150mm is the largest and highest-capacity option in this range. The rubber tread is bonded to a Polypropylene wheel centre, providing additional structural rigidity under sustained loads. The 40mm tread width and 181mm overall height make this castor particularly effective on rougher floor surfaces and in environments where equipment is moved over longer distances.

Frequently Asked Questions
How do I choose the correct wheel diameter for my application?
The wheel diameter directly affects rolling ease, floor clearance, and the ability to roll over obstacles or floor joints. Larger wheels roll more easily over uneven surfaces and reduce the effort required to move loaded equipment. As a general guide: 80mm suits light furniture and domestic use; 100mm is the most versatile choice for general commercial and workshop applications; 125mm is recommended for heavier industrial trolleys and institutional equipment; 150mm is best suited to the heaviest loads and environments where the equipment is moved over longer distances or rougher floors. Always confirm the total castor height is compatible with your equipment frame before ordering.
What does the load capacity rating mean, and how do I calculate what I need?
The load capacity figure shown for each castor is the maximum static load that a single castor is rated to carry. To determine the minimum load rating required per castor, divide the total weight of your equipment (including its maximum contents) by the number of castors fitted — typically four. For example, a trolley with a maximum loaded weight of 200kg fitted with four castors requires a minimum of 50kg per castor. It is strongly recommended to apply a safety margin of at least 25–30% above this calculated figure to account for dynamic forces, uneven weight distribution, and floor irregularities. Never exceed the stated load rating of any individual castor.
Will these castors fit my existing equipment? How do I check plate compatibility?
All four sizes in this range share the same standardised top plate: 100mm long x 85mm wide, with four fixing holes of 10mm diameter. The hole centres are dual-spaced at 60mm and 80mm, meaning the plate is compatible with equipment drilled to either of these standard spacings. To confirm compatibility, measure the distance between the centres of the fixing holes on your existing equipment or frame. If your equipment uses M8 or M10 bolts and matches either the 60mm or 80mm hole-centre pattern, these castors will fit directly as a replacement or new fitting without modification.
Are these fixed castors suitable for use on hard floors, and will they cause marking or damage?
Yes. The black rubber tread on these castors is formulated to provide good grip and shock absorption on hard floor surfaces including concrete, ceramic tile, vinyl, and sealed timber. The 85 Shore A hardness rating indicates a firm but slightly flexible tread that resists flat-spotting under static load while remaining quiet in operation. The rubber compound used is a general-purpose black tread and is not specifically formulated as a non-marking compound — if floor marking is a critical requirement, please check the tread specification against your flooring type before fitting. For most commercial and industrial hard-floor environments, these castors perform well without causing surface damage under normal operating conditions.
* Load ratings stated are for static loads under normal operating conditions. Dynamic loads, shock loading, and uneven weight distribution will reduce effective capacity. Always select a castor with a load rating that includes an appropriate safety margin above the calculated per-castor load. If in doubt, select the next size up.

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