Castor Wheels
Replacement castors affect steering, clearance and the height of a trolley or cabinet.
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Office Chair Wheels, Set of 5, 76.2 mm Caster Wheels Replacement for Hardwood Floors and Carpet, Heavy Duty Computer Gaming Desk Casters with 59 kg Load Capacity, Universal Fit for Most Chairs
Regular price $29.90 AUDRegular priceUnit price per$26.90 AUDSale price $29.90 AUD -
5 pcs Office Chair Casters 360 Rotatable Replacement Wheels with Locks
Regular price $38.90 AUDRegular priceUnit price per$59.00 AUDSale price $38.90 AUDSale -
5X 3'' Rollerblade Style Wheels Office Chair Casters - Slient Smooth, 11x22mm Stem
Regular price $32.90 AUDRegular priceUnit price per$59.00 AUDSale price $32.90 AUDSale -
Office Chair Caster Wheels Set of 5 - Heavy Duty & Safe for All Floors with Universal Fit
Regular price $36.90 AUDRegular priceUnit price per -
Heavy Duty Polyurethane Swivel Castor Wheels 2X 4" - Premium
Regular price $42.80 AUDRegular priceUnit price per$42.80 AUDSale price $42.80 AUD -
Heavy Duty Polyurethane Swivel Castor Brake Wheels 2X 4" - Premium
Regular price $56.80 AUDRegular priceUnit price per$75.80 AUDSale price $56.80 AUDSale
Replacement castors affect steering, clearance and the height of a trolley or cabinet. Start with the mounting interface and the floor, then choose the wheel and brake arrangement. This selection contains pairs of 100mm wheels; confirm the exact fixed, swivel or braked configuration because those functions are not interchangeable.
Compare the fixing pattern before wheel diameter
A wheel can be the right diameter but have the wrong plate or bolt spacing. The 100mm castor specifications list a 90 × 64mm plate and 74 × 45mm hole centres. Check these against the existing equipment, along with the total mounting height, so a replacement does not leave the trolley uneven.
Decide how the equipment should steer
Fixed wheels roll along one direction, while swivel castors can change direction. A brake may act on the wheel, the swivel or both depending on its design. The non-braked listing contains conflicting fixed/swivel wording, so obtain confirmation of the actual configuration before ordering a replacement pair.
Use the assembled equipment rating
The wheel’s rating is only one part of the complete trolley: mounting points and the frame also carry the load. Do not assume that multiplying a nominal per-wheel number automatically gives a safe equipment capacity. For uneven floors or special conditions, ask the supplier to confirm suitability for the assembled application.
Useful answers
Castor Wheels questions, answered
Will a 100mm replacement castor fit any trolley using 100mm wheels?
No. Wheel diameter is only one dimension. Compare the mounting plate, hole centres, overall height and fixing arrangement with the trolley. The two listed pairs specify a 90 × 64mm plate and 74 × 45mm hole centres; confirm the exact product before treating those dimensions as a match.
How do fixed, swivel and braked castors affect a trolley?
A fixed wheel follows one direction, while a swivel castor changes direction; a brake’s action depends on its design. The non-braked listing contains conflicting fixed and swivel wording, so obtain confirmation of the supplied configuration. That distinction affects steering and cannot be resolved from wheel diameter alone.
Can I multiply one castor’s load rating by four to rate the trolley?
Do not use that calculation as the complete equipment rating. The frame, mounting points, load distribution and operating conditions also matter. The listings contain inconsistent capacity wording, so have the exact rating and intended assembled use confirmed before choosing replacements for a loaded trolley.