Castor & Wheel FAQs – Expert Advice for Every Application
Looking for the right castors or wheels for your project? Whether you're working on a DIY build, upgrading equipment, or sourcing for trade, our expert FAQ covers everything from choosing the right wheel to understanding load capacities and fittings.
With over 30 years of experience, we’re here to help you find the perfect solution - quickly and confidently.
Choosing the Right Castor
What castors do I need for my project?
The right castor depends on three key factors: load weight, floor surface, and application.
For example:
- Furniture & DIY projects → rubber or non-marking castors
-
Workbenches & tool units → medium to heavy duty castors with brakes
-
Outdoor use → pneumatic or larger rubber wheels
🔎 Browse our Home & DIY Castors to find suitable options.
What size castor should I choose?
Larger wheels roll more easily over uneven surfaces and carry heavier loads. Smaller wheels are better for light-duty indoor use.
As a guide:
- 50 - 75mm → Light DIY & furniture
- 100 - 125mm → General purpose
- 150mm+ → Heavy items or outdoor use
How do I calculate load capacity?
Add the total weight of your item and divide it by the number of castors used.
We recommend adding a safety margin of at least 25% to ensure durability and performance.
🧑🔧 Need help? Contact our team for tailored advice.
Castor Types & Features
What is the difference between swivel and fixed castors?
Swivel castors rotate 360° for easy maneuverability.
Fixed castors only move forward/backwards for stability
Most setups use a combination:
2 swivel + 2 fixed
or
2 swivel + 2 swivel braked
Do I need braked castors?
Braked castors lock the wheel (and sometimes the swivel) to prevent movement.
They’re ideal for:
- Workbenches
- Trolleys
- Furniture
What’s the difference between plate and bolt hole castors?
- Plate fitting → fixed with 4 bolts, more stable, higher load
- Bolt hole fitting → single central fixing, ideal for lighter applications
- Wheel Materials Explained
Wheel Materials Explained
Are rubber castors better than plastic (nylon)?
It depends on your use:
Rubber wheels
- Quieter
- Better grip
- Floor-friendly
- Ideal for indoor DIY
Nylon wheels
- Higher load capacity
- More durable under heavy weight
- Better for industrial use
What are non-marking wheels?
Non-marking wheels (usually grey rubber) are designed to protect floors and prevent black marks.
Perfect for:
- Laminate
- Tiles
- Hardwood floors
What wheels are best for outdoor use?
For outdoor or rough surfaces, we recommend:
- Pneumatic wheels
- Larger diameter rubber wheels
These absorb shock and handle uneven terrain more effectively.
Can castors be used on wooden floors?
Yes, but we recommend non-marking rubber wheels to avoid scratches and marks.
What castors are best for carpet?
Larger diameter wheels (100mm+) or harder materials like nylon perform better on carpet.
What castors are best for rough or uneven ground?
Use:
- Pneumatic wheels
- Large rubber wheels
These provide better shock absorption and smoother movement.
Buying & Ordering
Do you sell castors in sets?
Yes. Many of our products are available in sets of 4, including:
- 2 swivel + 2 braked
- 2 swivel + 2 fixed
- Full swivel sets
Do you offer bulk discounts?
Yes. We offer competitive pricing for bulk orders.
🔎 Visit our bulk buying page or contact our team for a tailored quote.
How quickly can I receive my order?
We offer fast UK delivery on thousands of stocked items, with many available for same-day dispatch.
Expert Advice & Support
I’m not sure what I need, can you help?
Absolutely. Our experienced team is here to help you choose the right castor for your application.
Whether you're a DIY customer or trade buyer, we’ll guide you to the best solution.