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Description
80mm Pressed Steel Swivel Castor with Brake — Grey Cast Iron Wheel & 4-Hole Plate — 120kg Max Load
Top-plate mounted • Directional brake • Ball journal bearing • Zinc-plated pressed steel housing
What it is & what it does: This 80mm swivel castor is built around a grey cast iron wheel housed in a pressed steel yoke with a zinc-plated finish for corrosion resistance. A directional brake locks the swivel action to convert the castor into a fixed-direction wheel, giving operators precise control over movement. Mounted via a 4-hole top plate, it is designed for demanding environments where reliable load-bearing mobility and controlled stopping are both essential — including industrial trolleys, workshop carts, platform trucks, storage racking, and heavy-duty commercial furniture.
Key Features
- Wheel Diameter 80mm — delivers smooth, stable rolling across hard and semi-hard floor surfaces
- Max Load Capacity 120kg per castor (360kg for a set of 4 at recommended loading)
- Wheel Material Grey cast iron — hard-wearing, high-density material suited to heavy industrial use
- Tread Width 30mm — broad contact patch for load distribution and floor stability
- Tread Hardness 85 Shore A — firm tread for efficient rolling on solid surfaces
- Brake Type Directional brake — locks swivel rotation to fix the direction of travel; does not lock the wheel from rolling
- Bearing Type Ball journal — precision ball bearings for low-resistance, smooth swivel action
- Housing Material Pressed steel with zinc-plated finish — robust construction with added corrosion protection
- Mounting Type 4-hole top plate — secure, bolt-on installation to flat surfaces
- Wheel Colour Grey
Typical Applications
Industrial & Warehouse
Platform trolleys, picking carts, pallet dollies, and workshop equipment requiring controlled directional movement.
Manufacturing & Engineering
Machine bases, fabrication benches, and tool storage units where load stability and floor protection are priorities.
Retail & Hospitality
Display units, service trolleys, and back-of-house equipment that need to be repositioned and then held in place.
Facilities & Maintenance
Janitorial carts, equipment trolleys, and mobile storage solutions across commercial and institutional settings.
Technical Specifications
| Specification | Value |
|---|---|
| Castor Type | Swivel with Directional Brake — Top Plate Mounting |
| Wheel Diameter (mm) | 80 |
| Wheel Material | Grey Cast Iron |
| Wheel Colour | Grey |
| Tread Width (mm) | 30 |
| Hardness of Tread | 85 Shore A |
| Bearing Type | Ball Journal |
| Brake Type | Directional Brake (swivel lock) |
| Max Load Capacity — Single Castor (kg) | 120 |
| Max Load Capacity — Set of 4 Castors (kg) | 360 |
| Total Castor Height (mm) | 106 |
| Plate Length (mm) | 100 |
| Plate Width (mm) | 85 |
| Plate Hole Centres — Width (mm) | 60 / 80 |
| Plate Hole Diameter (mm) | 10 |
| Number of Plate Holes | 4 |
| Housing Material | Pressed Steel |
| Housing Finish | Zinc Plated |
Frequently Asked Questions
What does the directional brake do on this castor?
The directional brake locks the swivel head, preventing the castor from rotating freely and fixing it to roll in a straight line only. This is useful when you need to guide a trolley or cart in a controlled direction without the wheel spinning sideways. It does not stop the wheel from rolling — for a full wheel lock, a total-stop brake castor would be required.
What floor surfaces is a cast iron wheel suitable for?
Cast iron wheels perform best on hard, smooth, or semi-smooth surfaces such as concrete, stone, tarmac, and steel plate flooring. Due to their hardness (85 Shore A), they are not recommended for use on delicate or polished floors such as hardwood, vinyl, or ceramic tiles, as they may cause surface marking or damage under load.
How do I calculate how many castors I need for my application?
Divide the total weight of your loaded equipment by the number of castors you intend to fit, then apply a safety factor. As a general guide, a set of 4 of these castors supports up to 360kg in total. For uneven floors or dynamic loads (e.g. moving over ramps or thresholds), it is advisable to use a lower working load than the stated maximum to account for impact forces.
What are the plate hole dimensions and bolt size required for fitting?
The 4-hole top plate measures 100mm (length) x 85mm (width). The hole centres span 60mm or 80mm in width, and each hole has a diameter of 10mm. Standard M8 bolts are typically compatible with 10mm plate holes — always verify against your specific mounting surface and hardware before installation.
* Load capacities stated are for static or slow-speed rolling conditions on level, hard surfaces. Reduce working loads for dynamic use, uneven terrain, or high-cycle applications. Always ensure castors are fitted and torqued correctly before use.
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