Plate Castors

Plate Castors

Plate castors mount to equipment using a flat, bolt-through top plate — the simplest and most common castor mount, and the standard fitting on trolleys, workbenches, cabinets, stillages, and mobile industrial equipment across Australian workshops and warehouses. The plate spreads load across the equipment frame through four (occasionally two) bolt holes, making it the default choice wherever a wheel needs to bolt straight onto a flat steel or timber frame. AIMS Industrial stocks a plate castor range from EasyRoll spanning 50mm to 200mm wheel diameters, light-duty to heavy-duty capacities, and rubber, polyurethane, nylon, cast iron, and pneumatic wheel materials. Not sure which one suits your job? Our Castor Wheel & Caster Guide: Wheel Materials, Mount Types, Load Ratings & AS 4429 covers selection in detail.

Quick reference

Full range, load ratings, and pricing: browse all plate castors. Need help matching a castor to your equipment? Call (02) 9773 0122 or contact our team.

The variations we stock

• Swivel plate castors — rotate a full 360° for steering; the everyday castor for mobile equipment, typically fitted to the front (or all four corners) of a trolley.
• Fixed (rigid) plate castors — don't swivel, so the equipment tracks in a straight line; commonly paired with swivel castors on the rear of a trolley for directional stability.
• Swivel plate castors with brake — add a wheel-locking brake to a swivel castor so equipment can be parked and held in place; some series also lock the swivel action (direction lock) for full stop-and-hold control.
• Stainless steel / hygienic plate castors — stainless bracket and fork for food processing, commercial kitchens, laboratories, and wash-down areas where corrosion resistance and easy clean-down matter.
• Heavy-duty cast iron plate castors — reinforced bracket with a cast iron or urethane-on-cast-iron wheel for higher load capacities and, in some series, high-temperature duty such as oven and foundry trolleys.
• Pneumatic and flat-free plate castors — air-filled or solid puncture-proof tyres for equipment that has to cross gravel, broken ground, or outdoor yard surfaces.
• Twin-wheel plate castors — two narrower wheels on one axle for extra stability under light loads, such as small display or instrument trolleys.

Wheel materials — match to floor and load

• Solid rubber — quiet ride, forgiving on rough or uneven floors, good shock absorption; a common choice for general workshop and warehouse trolleys.
• Polyurethane (PU) / urethane-on-cast-iron — quiet on smooth concrete, doesn't mark floors, and handles higher loads than rubber alone; a workshop favourite where capacity matters.
• Nylon — hard-wearing, handles oil and chemical spills well, but transmits more noise and floor shock than rubber or urethane.
• Cast iron — for heavy loads on smooth, hard floors and high-temperature areas (no plastic components to fail near heat); durable but noisy.
• Pneumatic (air-filled) / flat-free (solid puncture-proof) — for outdoor, gravel, or uneven-surface use; pneumatic gives the smoothest ride, flat-free removes the puncture risk.
• Polycarbonate — a clear, lighter-duty wheel used on some display and retail equipment.

Sizing and load capacity

AIMS stocks plate castors from 50mm up to 200mm wheel diameter. As a rule, a larger-diameter wheel rolls more easily over floor joints, thresholds, and small obstructions but sits the equipment higher off the ground — pick the largest wheel your equipment's ground clearance allows. Per-castor capacity varies by series, wheel diameter, and material, spanning roughly 50kg on the smallest light-duty castors up to 500kg or more per castor on the heavy-duty cast iron and urethane series. Castors are selected and rated as a set, not simply added together — the standard configuration for a four-castor trolley is one fixed and three swivel castors (or two and two), and the trolley's practical capacity should allow a safety margin below the sum of the individual castor ratings, particularly where the load isn't evenly spread across all four. Check the capacity shown against each product before ordering, and get in touch if you're unsure which series suits your load.

Plate size and bolt pattern

The top plate's bolt-hole pattern varies by series and capacity — always check the plate dimensions and hole spacing against your equipment's existing mounting holes before ordering a replacement. If you're fitting new castors to a piece of equipment for the first time, choose the castor first (by load and wheel requirements) and drill the mounting holes to match its plate, rather than the other way around. Replacing a worn castor with one from a different series can mean the new plate doesn't line up with the old holes — our team can help you cross-reference a bolt pattern before you order.

Brand stocked at AIMS

AIMS Industrial's plate castor range is supplied by EasyRoll, covering the light-duty through heavy-duty range across rubber, urethane, nylon, cast iron, and pneumatic wheel options, plus the stainless and brake variants above. Looking for a bolt-hole or stem-mount castor instead — including Colson's total-lock and direction-lock ranges? See the full castors collection for every mounting type and brand we stock.

Service and replacement

Castor failures usually trace back to the wheel tread or the swivel bearing — the bracket itself rarely wears out under normal use. If a castor's bracket is bent or the swivel mechanism has failed, replace the complete castor; bracket repair is rarely economical against the cost of a new unit. When replacing rather than repairing, match the existing plate size, bolt pattern, wheel diameter, and capacity as closely as you can, or budget for reworking the equipment's mounting holes.

Companion Collections

• Castors — the full AIMS castor range: every mounting type (plate, bolt-hole, stem), material, and brand we stock, including EasyRoll, Colson, and MoveIt.
• Stem Castors — castors that mount via a threaded or grooved stem instead of a bolt-through plate, for chairs, light equipment, and stem-socket fittings.
• Castors & Wheels — castors plus standalone replacement wheels, for when only the tyre needs replacing.
• Standard Industrial Wheels — standalone wheels without a castor bracket, for equipment builders and repairs.
• Pneumatic & Flat-Free Wheels — air-filled and puncture-proof wheels for outdoor and rough-ground equipment.
• Material Handling & Storage — trolleys, stillages, and the broader equipment plate castors get fitted to.

Order from AIMS Industrial

Not sure which plate castor suits your trolley, cabinet, or piece of equipment? Our Sydney-based team can match a castor by load, wheel material, and existing bolt pattern, and quote for multi-unit or fleet orders. Call us on (02) 9773 0122, get in touch via our contact page, or submit a request a quote for bulk pricing. Industrial supplies made simple.

Frequently asked questions

What is a plate castor?

A plate castor is a wheel-and-bracket assembly that bolts to equipment through a flat top plate, usually with four bolt holes. It's the most common castor mounting type for trolleys, benches, cabinets, and industrial mobile equipment, because the plate spreads load across a wide bolting footprint.

What's the difference between a swivel and a fixed plate castor?

A swivel plate castor rotates 360° for steering. A fixed (rigid) plate castor doesn't swivel, so it tracks in a straight line. Most trolleys use a mix — commonly two swivel castors at the front for steering and two fixed castors at the rear for stability, though a fully-swivel four-castor set is also common for tight-space manoeuvring.

Can I get a plate castor with a brake?

Yes — AIMS stocks swivel plate castors with a wheel-locking brake across several series, so you can park and hold equipment in place. Some series also offer a direction lock (locking the swivel as well as the wheel) for full stop-and-hold control.

What wheel diameter and capacity do I need?

Match the wheel diameter to the ground clearance your equipment allows — larger wheels roll more easily over joints and thresholds — then check the per-castor load rating against your equipment's total weight, allowing a safety margin rather than simply dividing the total load by four. Our range runs from 50mm up to 200mm diameter with capacities from light-duty up to 500kg or more per castor on the heavy-duty series. Call us if you'd like help sizing a set.

Do you stock stainless steel plate castors for food or wash-down areas?

Yes — our stainless and hygienic plate castor series suit food processing, commercial kitchens, laboratories, and other wash-down environments where corrosion resistance and easy clean-down are needed.

What wheel material should I choose?

Rubber and polyurethane are quiet and floor-friendly for general workshop and warehouse use. Nylon and cast iron suit heavier loads and oil or chemical exposure but are noisier. Pneumatic or flat-free wheels suit outdoor and uneven-ground use. See the wheel materials section above for the full comparison.

Do plate castors come in pneumatic or puncture-proof options?

Yes — AIMS stocks plate-mount castors with pneumatic (air-filled) wheels and flat-free (solid, puncture-proof) wheels for equipment that has to move across gravel, yards, or broken ground.

How do I make sure a replacement castor's plate will fit my equipment?

Check the bolt-hole spacing and plate dimensions on the product against your existing mounting holes before ordering. If they don't match closely, either choose a series with a matching plate or be prepared to drill new mounting holes — our team can help you cross-reference a bolt pattern if you're not sure.

What brand of plate castor does AIMS stock?

Our plate castor range is supplied by EasyRoll. If you need a bolt-hole or stem-mount castor instead — including Colson's total-lock range — see our full castors collection.