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Specifications
- Product Type
- Round spring fitting castor adaptor
- Tube Shape
- Round
- Suits Tube Internal Diameter
- 25.4mm (1 inch)
- Spring Action
- Compresses under approx. 15kg load
- Castor Fixing
- Threaded stud with nut and washer for a single bolt hole castor
- Material
- Steel
- Finish
- Zinc plated (silver)
- Typical Use
- Mobile steps, kick stools and tube-framed equipment
Floors & use
Cast iron / steel wheel
- Carries very heavy loads
- Tolerates heat and sharp debris
- Suits concrete, steel and foundry floors
- Noisy
- Will mark or damage finished floors
Details & FAQs
Castor Accessories
This round spring fitting adaptor lets you fit a single bolt hole castor into a round tube leg with a 25.4mm internal diameter. The spring-loaded sleeve lets the castor roll freely when the item is moved, then compresses under a load of around 15kg so the legs settle firmly on the floor. It is the classic fitting for mobile steps, kick stools and other tube-framed equipment that must stay put while someone stands on it.
If you are looking for a spring loaded castor fitting, a 25.4mm (1 inch) round tube castor adaptor, a replacement spring insert for mobile steps or a way to fit bolt hole castors into tube legs, this zinc-plated adaptor is a simple and reliable solution.
Why Choose This Adaptor
- ✓ Spring-loaded action compresses under about 15kg so equipment rests on its feet when in use.
- ✓ Made for 25.4mm round tube with a 25.4mm internal diameter.
- ✓ Threaded stud with nut and washer for fitting a single bolt hole castor.
- ✓ Zinc-plated steel for a clean finish and good corrosion protection indoors.
- ✓ Ideal for mobile steps and stools where safe, stable footing matters.
* Castor sold separately. Check the inside of your tube before ordering: this adaptor suits round tube with a 25.4mm internal diameter.
Where It Works Best
This spring fitting is designed for mobile library steps, warehouse kick stools, stock-picking steps and other round tube-framed equipment that needs to roll into position and then stand firmly while in use. It is also a handy replacement part when the original spring fitting on a set of mobile steps has worn out.
Frequently Asked Questions
How does a spring fitting adaptor work?
The castor is held on a spring inside the sleeve. With no load, the castor rolls and the item moves easily. When around 15kg or more is applied, the spring compresses and the legs settle onto the floor, so the item stays in place.
What size tube does it fit?
It suits round tube with an internal diameter of 25.4mm (1 inch). Measure the inside of your tube, not the outside, before ordering.
Is a castor included?
No, the castor is sold separately. The adaptor is designed to take a single bolt hole castor on its threaded stud.
What is it typically used for?
It is most often used on mobile steps and kick stools, where the castors must retract under the user's weight for a safe, stable footing.
Can I use it to replace a worn spring fitting?
Yes, as long as your tube is round with a 25.4mm internal diameter, it makes a straightforward replacement for a worn or damaged spring fitting.
Delivery & returns
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