75mm Pressed Steel Fixed Castor Wheel - Black Polypropylene Wheel & 4-Bolt-Hole - 75kg Max Load

75mm Pressed Steel Fixed Castor Wheel ? Black Polypropylene Wheel, 4-Bolt Top Plate, 75kg Load Capacity This 75mm fixed castor wheel features a pressed steel top plate with a four-bolt mounting configuration and a black polypropylene wheel. Designed for stationary directional use, it delivers reliable load-bearing performance across a wide range of light-to-medium duty applications ? including office furniture, workshop benches, retail display units, shelving, and warehouse trolleys. With a 75kg individual load rating and a combined four-castor capacity of 225kg, it is a dependable choice wherever controlled, fixed-direction mobility is required. Key Features Fixed Castor Design: Provides straight-line directional movement with no swivel action, ensuring stability and controlled mobility. Pressed Steel Top Plate: Zinc-plated steel plate construction offers strength and corrosion resistance for long-term durability. Black Polypropylene Wheel: Hard-wearing thermoplastic wheel suited to smooth and semi-smooth indoor floor surfaces. 75kg Individual Load Capacity: Rated to support up to 75kg per castor, with a combined four-castor maximum of 225kg. 4-Bolt Hole Mounting: Standard four-bolt top plate for secure, straightforward installation onto equipment frames and furniture bases. Plain Bearing: Low-maintenance bearing type suited to moderate-speed, consistent-load applications. Zinc-Plated Finish: Provides a clean, professional appearance and added resistance to surface oxidation. Compact 75mm Wheel Diameter: Balances ground clearance with a low overall castor height, ideal for space-conscious installations. Technical Specifications Specification Detail Castor Type Fixed (Non-Swivel) Mounting Type Top Plate ? 4-Bolt Hole Wheel Diameter 75mm Tread Width 22mm Wheel Material Polypropylene (Black) Wheel Colour Black Bearing Type Plain Bearing Total Castor Height 100mm Individual Load Capacity 75kg Max Load (4 Castors Combined) 225kg Plate Length 60mm Plate Width 67mm Plate Hole Centres ? Length 48mm / 38mm Plate Hole Centres ? Width 48mm / 38mm Plate Hole Diameter 6mm Plate Finish Zinc Plated Typical Applications Office Furniture Suitable for desks, workstations, and storage units where fixed, stable movement is preferred over free-swivel rotation. Warehouse & Storage Ideal for shelving bays, picking trolleys, and light goods handling equipment in distribution and storage environments. Workshop & Industrial Well-suited to tool cabinets, workbenches, and equipment stands requiring directional movement across workshop floors. Retail & Display Provides controlled mobility for display stands, gondola units, and point-of-sale fixtures in retail environments. Frequently Asked Questions What is the difference between a fixed castor and a swivel castor? A fixed castor moves in a single straight-line direction only ? it does not rotate on a vertical axis. A swivel castor, by contrast, can turn 360 degrees, allowing multi-directional movement. Fixed castors are typically used in combination with swivel castors to provide directional control and stability, or alone on equipment that only needs to move in one direction. How do I calculate the correct load capacity for my application? To determine the required load capacity per castor, divide the total weight of the loaded equipment by the number of castors being fitted, then apply a safety margin of approximately 30?40%. For this castor, the individual rating is 75kg, with a combined four-castor maximum of 225kg. Always base your calculation on the maximum loaded weight, not the empty weight of the equipment. Is this castor suitable for use on hard floors such as concrete or tile? Yes. The polypropylene wheel is well-suited to smooth and semi-smooth hard floor surfaces including concrete, tile, vinyl, and laminate. It is a hard wheel material, which means it rolls efficiently on firm surfaces but is not recommended for use on soft, uneven, or heavily textured flooring where a rubber or polyurethane wheel would be more appropriate. What bolt size is required for the 6mm plate holes? The top plate features four mounting holes with a 6mm diameter, which are compatible with M6 bolts or screws. The hole centres measure 48mm and 38mm across both the length and width of the plate, giving you two bolt-pattern options to suit different equipment frames. Always ensure the fasteners used are rated to the load requirements of the application. * Load capacity figures are provided as a guide under normal operating conditions on suitable floor surfaces. Actual performance may vary depending on floor condition, speed of movement, temperature, and the distribution of load across all fitted castors. Always verify suitability for your specific application before installation.