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50mm Twin Hard Wheel Swivel Castors & 36mm Tower with choice of Stem

  • Image 1
  • 50mm Hard Wheel Castor with a 36mm Tower and Choice of Stem Option
  • Stems / Fixings for 50mm Castors.
  • Feedback and Product Reviews
£2.15 (inc VAT:) £1.79 (exc VAT:)
Calculated at checkout

Product Description

50mm Black Hard Wheel Castor

The product listed is a 50mm diameter black hard wheel castor with a 36mm tower. Towers are only for cosmetic purposes and do not change anything about the castor except the look of it. The castor takes a weight loading of 50KG. It is applicable with any of the stem options that can be seen in the images and on the drop down option. Ideal castor to use on things such as office chairs, tables and desks. 

gr5016h-specifications-diameter-pages.jpg    gr5036h-specifications-height-pages.jpg    gr5036h-specifications-tower-pages.jpg       gr5016h-specifications-tyre-width-pages.jpg              gr5016h-specifications-castorwidth-pages.jpg

 Diameter of Castor    Height of Castor       Tower         Thickness of Wheel   Total Width of Castor   


Frequently Asked Questions relating to this product:

Question: I need a 50mm castor that is able to be fixed to wood, would these be adequate?

Castors Unlimited Response: Yes, you can use our plate fixings to fix the castor to your wooden cabinet or pick a threaded stem and purchase our wooden inserts nuts to use in correspondence. 

Question: How do i know what stem to use? 

Castors Unlimited Response: In order to establish what stem you should order, you need to know two things, 1. the diameter of your current stem, 2. The remaining stem length that is left after the stem is pushed into the castor. After you know this information, its easy! You match up your measurements with our range of stem options and look for your match. 


Delivery Information:

Next Day Delivery: If you require your products on a next-day service, please ring us and check our stock levels of the products that you want to order. Any Next-Day deliveries must be ordered by 12 noon (mid-day). Any orders placed after that time slot may not be accounted for next-day delivery. Every order that is placed for a next-day delivery requires for a contact number to be put with the order so that if for any reason the courier cannot deliver they can call you. In a situation, where a delivery cannot take place the driver will leave a card providing details of where you can collect your undelivered parcel from. On some occasions we can even ship the same day! Get your orders in by 12pm Noon.

2nd Class: Royal Mail quote 2-3 working day delivery, including Saturdays. Please Note: *This is not a tracked service* If you require a tracked service that is not next-day delivery, please call us and we can arrange for this.

Air Mail – International Postage: Our prices are based on Royal Mail’s prices. We can ship anywhere outside of the UK.

Free Shipping: Where a product has free shipping listed on it, this applies to any deliveries in the UK. We cannot offer free shipping outside of the UK.




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Product Reviews

Showing reviews 1-10 of 18 | Next

  1. 10mm Office Chair Castors 5 Star Review

    Posted by on 18th Jul 2017

    They're castors, and they fit. They arrived promptly. Not much more you can expect, really.

  2. Good Delivery by Castorsltd 4 Star Review

    Posted by on 23rd Jun 2017

    Item arrived on time and on good condition. Well packaged
    and fit for purpose. Price was fair too.
    Thanks for a job well done.

  3. Excellent Castors 5 Star Review

    Posted by on 26th Jul 2016

    My current office chair is still in very good condition, but as I have had it for over 10 years, the company from which I purchased the chair no longer supply castors with the size I required. I contacted Castors Unlimited and they were able to supply the correct castor I required. It fitted the chair perfectly and I am highly delighted with them. Once again, I am able to enjoy my chair as I should. I can highly recommend this company. The service they provided was quick and efficient, with a fast delivery time.

  4. As ordered 4 Star Review

    Posted by on 16th Feb 2016

    Exactly what I was looking for. Too many other companies only have the castors with the spindle already in. Fast delivery.

  5. Replacement castor for swivel chair 5 Star Review

    Posted by on 12th Oct 2015

    The supplied item turned out to be a like-for-like replacement when fitted to a swivel chair of Chinese manufacture. So far I am very pleased with my purchase.

    The service from Castors Unlimited was excellent.

  6. Replacement Chair Casors 4 Star Review

    Posted by on 14th Sep 2015

    Decent product, rolls well and provides good replacement. Glad I bought three, in case another original fails.

  7. Excellent delivery service 5 Star Review

    Posted by on 4th Jan 2015

    I ordered these castors 30 Dec pm and they arrived 2 Jan am despite Jan 1 and holiday season in general. I was very pleased as I had resigned myself to several more days of wonky chair!

    The castors themselves were easy to replace and they work well. Mine were 10 x 30mm stem. They came with the circlip ready fitted in the groove (something not obvious from the photos) so I was saved the bother of trying to prise the old ones off intact. They seem of adequate quality, and the chair trundles nicely on my short pile carpet with my 100kg weight on it. I don't yet know how long they last, but they look of similar quality to my old ones, which lasted about 15 years.

  8. Excellent Service 5 Star Review

    Posted by on 6th May 2014

    Good quality goods, helpful staff - excellent service

  9. Great Service and Product 5 Star Review

    Posted by on 18th Apr 2014

    The website was informative, easy to order and delivered promptly.

    Exactly as advertised and good value.

    Many thanks.

  10. Favourite chair saved. 5 Star Review

    Posted by on 14th Apr 2014

    Castor came by return of post. My favourite chair was transformed from useless to fully functional again. Seemed to be an unusual size but fitted perfectly. Thoroughly recommended.

Showing reviews 1-10 of 18 | Next


Perfect fit for my needs. As a returning customer, I was more than happy and pleased with the service from Mr Rob Scott and his very helpful and professional staff. I having bad to negative to say about any of my purchases from Castors Unlimited, or the people I have had the pleasure, of speaking to and getting the knowledge, and insight to my needs. Just keep up the great job by doing what you do the best job for your customers. Anthony J Kimber
------------------------------------- Everything perfect thanks, quick delivery, great items that sorted my office chair problem and excellent communication. Top stuff. Kingsley.
------------------------------------- Great value - it's transformed a tired office chair and we can whizz around in it now !! Sandra.
------------------------------------- Good product, good price, quick delivery. Many thanks.
------------------------------------- Thanks for a fast simple transaction, the way it should be!
------------------------------------- I am very very happy with my purchase EXCELLENT SERVICE, pleasure to deal with. Matt
------------------------------------- Excellent service and product. Most certainly buy again! Recommended!! Jo.
------------------------------------- The castor was perfect for our needs, to replace a broken one and use an existing stem which couldn't be removed. So many castors nowadays come with a stem which can't be removed. Customer services and delivery were flawless. We'll use this company again, well done to them. Adriana Williams
------------------------------------- As a domestic customer, it was quite a work-up trying to find replacement domed inserts for our dining chairs. Like so much furniture these days, our chair were made in China. Great design, but trying to get replacement feet was proving a nightmare. After much searching on the web, thankfully we found 'castors unlimited'. They were very helpful. Cannot recommend highly enough. Oh, the product, Good quality,made in Britain. What more could we ask for! John.
------------------------------------- Small problem with packaging, (may have been caused by Royal Mail handling). Contacted Castors Unlimited, resolved, replacement missing part received and fitted all within 24 hours. Well done Natalie and team. These were for IKEA Markus chair, perfect fit and much smoother action. Mr Donovan
------------------------------------- I purchased M10 adjustable glides. The service and price where both excellant. Regards. John Pears Rollaco Presses.
------------------------------------- I just wanted to let you know I am really pleased with the product, price and speed of service from you. E-mail notifications were really good as well. I do a lot of purchasing for work and I'm used to companies not doing what they say they will so it was really nice to have an efficient service from yourselves. Keep up the good work! - Thanks a lot, Reece Gale
------------------------------------- Several companies seemed to be viable contenders to supply what I needed, but Castors Unlimited had by far the most impressive website. So I just measured my broken castor and filled in the online form - two days later my problem was solved. I actually bought two because I never know if anopther castor might collapse (the chair is about ten years old!) and they are so inexpensive that it seemed silly not to.
------------------------------------- At Ocean Life Aquatics we use Castors Unlimited to supply products as part of our bespoke aquarium installations. Their products are of excellent quality and competitively priced. Customer service is second to none, especially when we require items the next day! Mark Robinson - Proprietor - www.oceanlifeaquatics.net
------------------------------------- Your company is one of those bright spots in the life of a busy facilities manager. You stock everything that can be found on the end of a piece of furniture, and your service is helpful and speedy (and competitively priced). What’s not to like? Sue McFadyen - Estates Co-Ordinator - The Sixth Form College Solihull
------------------------------------- Happy New year and my apologies for taking so long to get back to you. With regards to both your service and the product that I ordered for the school, I would like to say I was very impressed with your assistance in getting the right item. No doubt I will be in contact with you as and when we need more items! Many thanks Ian Betts, Blessed William Howard Catholic High School.
------------------------------------- Castors Unlimited are certainly competitive, I have had a good Google around, but price isn't everything as service is very important too. Whilst one is able to see prices online there is little indication on how good the service may be. CU have proven on both counts so I have little intention of going anywhere else. Thank you for that. - Andy Young
------------------------------------- Many thanks again for your help and the amazing service. It has been a pleasurable experience – if only all online shipping could be this painless!! Kind regards. Graham Laird. 31.10.13
------------------------------------- The service provided in buying this product and the after sales service in rectifying one particular issue was brilliant. It was excellent customer service combined with very good delivery service. Now, I don't hear the scratch of the old wheels on the wood floor - smooth and silent! Posted By Stephen Coates 30/10/2013
------------------------------------- Fantastic company - Rated 5 out of 5 stars by reviewer Product: 50mm Twin Hard Wheel Swivel Castors & 36mm Tower with choice of Stem Feedback: From the minute I spoke with a young lady on sale I found 110 percent service and quality and fantastic value.. it was a joy to see 'old fashioned' values are still around well done castorsunlimited I wish you all a great future. Thank you, the products were perfect, great value and delivered at speed... regards Mike Ford
As a result of a broken castor on my office chair, I was told to speak to these people. Very helpful and knowledgeable staff, who helped me with the size and type of castor required, which can be tricky. Product delivered within a couple of days of order and my office chair is as good as new and at a fraction of the cost of buying a new one. Thanks!Posted By: Roger.
"wheelie" good casters by Martin (Southgate N14) on 22nd Jun 2013 Good quality replacements for my 'home' office chair at what I regard as modest prices. The advice received as to the exact product was spot on and delivery very prompt. Well done!
Just a quick note of thanks for your help and service given. I was so surprised this morning to have the order delivered, that must have been the fastest delivery I have known less than 24hrs from time of phoning you. Thank you once again. kind regards

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