General Queries

Quality Bearings Online stock over 1,000,000 bearings and engineering spares from some of the worlds leading brands including SKF, NSK, FAG, Timken and IKO.

We also stock maintenance products, lubricants and greases for all your maintenance needs, whether you require tools for removing and replacing bearings, or an industrial grease to make sure your equipment is running at its optimal performance, we can supply you the industry best products from manufacturers like SKF, Shell, Molykote and Loctite.

We are certain we can find and source the products you require to get your machinery back up and running as soon as possible.

At Quality Bearings Online we supply the highest quality bearings and ancillary products to all our customers across the world.

Working with well known brands such as SKF, FAG, NSK, Timken, Shell and Molykote, we know we are giving our customers quality products every time they order.

If you require any other brands that we do not have listed, our team can find and source the brands that you require.

For the full list of brands we supply visit our Brands Information Page

All the products we sell are bought either Directly from the manufacturers or through their approved supplier network, so we can guarantee that you only receive 100% genuine products every time you place an order with us.

We offer full certification with all the products we sell, you can ask for Certificate’s of Conformity or Certificate of Analysis at the time of placing the order and we will issue these with your Order

(this may incur a small cost depending on the manufactures terms and conditions).

Quality Bearings Online was established in 2012, but our staff have a combined 75 experience in the bearing industry, and all our staff pride themselves on gaining new product knowledge every day through industry training and engineering shows.

Our customers come from over 110 countries worldwide which has meant that Quality Bearings Online is a multi-award-winning export company, winning such awards as;

  • British American Business Chase Awards for Transatlantic Trade 2016
  • PD Ports BQ Award for Ecommerce Exporter of the Year 2017, 2018
  • Federation of Small Business Regional Exporter of the Year 2017
  • British American Business Transatlantic Growth (TAG) Awards 2018
  • PD Ports Northern Powerhouse Export Team of the Year 2019

We supply products to some of the largest industries including Marine, Aerospace, Rail, Automotive and Precision Engineering, so we are confident with our vast experience in multiple different industries we can meet and exceed your expectations.

In 2018 Quality Bearings Online achieved the ISO 9001:2015 status, which is a recognition of our business quality.

As an international company, exporting to over 110 countries worldwide, we have already made contingency plans in the event of a ‘deal’ or ‘hard Brexit.’

Whilst no company can mitigate for every scenario, we have undertaken a thorough analysis of our business, customer markets, products and supply chain to ensure that we will be able to deliver the same high level of service, product availability and delivery.

Our plans include:

  • Working with our existing product partners to establish several alternative supply routes
  • Extending our current stock holding to ensure continuity of supply
  • Ensuring that our delivery partners have contingency plans in place
  • Working to ensure that our warehouse and customer services team can respond to potential changes in customs/packing legislation
  • Reducing or eliminating the impact of any tariffs upon our product prices

We are very confident that in either scenario, Quality Bearings Online will still deliver the same high level of service, broad product range and rapid worldwide delivery.

Product Queries

There are a few different ways in which you can identify which bearing you require for your machine,

Almost all bearings that we supply will be stamped with the bearing reference on the side,

image of the bearing reference on the inner race of the bearing image of the bearing reference on the outer race of the bearing image of the bearing reference on the metal shield of the bearing image of the bearing reference on the rubber seal of the bearing
On the Inner Race On the Outer Race On the Metal Shield On the Rubber Seal

These part numbers sometime are not the easiest to read therefore the bearing might require cleaning with an oily rag, or you may need a magnifying glass to see what the part number is.

Once you have found the part number then type that into our search box at the top of the page or use the search box below and you should find the bearing you are looking for.

If you cannot find the part number or the bearing is worn or damaged, you will need to measure the bearing to figure out which part you need. To do this you will need to use a Vernier caliper, and you will need to get three dimensions.

image of the bearing reference on the inner race of the bearing image of the bearing reference on the outer race of the bearing image of the bearing reference on the metal shield of the bearing
Inside Diameter Outside Diameter Width

These three measurements will give you the dimensions that you will need to find the bearing you are searching for. Once you have the dimension sizes, type it into our search box in the following order; Inside Diameter, Outside Diameter, and width and our search engine will feed back the products that fit those dimensions.

If you already have the part number or dimensions for the bearing you require you can use our search box in the top corner of our website or use the search box below to find the product that you require, this search engine will bring up alternative brands and variations to the product you are looking for along with the product that you require.

While our website is always being updated with new products and brands, we cant guarantee that we have the product you require on our website.

Do not fear, if you cant find the product on our website you can give our helpful and friendly sales staff a call on 0808 168 1234 or email and they will endeavour to find what you require to get your machinery up and running as quickly as possible to help reduce your downtime to a minimum.

This question normally comes down to the environment the bearings are being used it. For example, if the bearing is being used in a moist environment then you’d choose rubber or metal as the metal is more likely to rust.

If the environment is very contaminated, then you might choose a rubber seal to keep the contaminants from damaging the inside of the bearing.

Your decision could also come down to the temperature the bearing needs to work to or the speeds it needs to reach.

The internal clearance of a bearing refers to the room around the balls or rollers where they sit between the inner and outer race. When a bearing is working, they heat up and the balls/rollers expand causing friction.

This is known as the limiting speed; what speed can the bearing do with all factors considered?

If a bearing has C3 clearance it is defined as having a greater internal clearance. This means that the balls/rollers can expand a bit more before the friction starts to limit its speed.

The difference between a C3 bearing and a standard clearance bearing isn’t visible; the amount of extra clearance is tiny, but still helps with bearings performance.

There are two main kinds of seal used with bearings: Rubber seals and metal shields.

In terms of maintenance, both types of seal can easily be removed by using dowel tool or small screwdriver

To remove the seal, slide the end of the tool, or whatever you choose, around the edge of the seal until it slides underneath. The seal will simply pop off, and you can then see the small balls inside the bearing.

Be aware that while you can remove a rubber seal, you can put the seal back on (if you do not damage during removal), you can’t do that with the metal shields as they distort when removed.

The DU/RS reference refers to a single seal and DDU/2RS refers to a bearing with a seal on both sides of the bearing.

Certain manufacturers have different references on their bearings and some put the references on the seals or shields, which means that they may put the reference down as a DU/RS as that bearing can then be used for either a single sealed/shielded bearing or a bearing with a seal on both sides of the bearing.

The ABEC scale is an industry accepted standard for ball bearing tolerances.

It was developed by the Annular Bearing Engineering Committee (ABEC) of the American Bearing Manufacturers Association (ABMA).

There are five classes, going from the widest tolerances to tightest: 1, 3, 5, 7, and 9.

Higher ABEC classes provide better precision, efficiency, and greater speed capabilities, but do not necessarily mean that the bearing can reach higher operating speeds.

Additionally, the ABEC rating does not specify many other critical factors, such as smoothness of the rolling contact surfaces, ball precision, and material quality.

Order Queries

No. We do not have a minimum order quantity. However, on certain order values we do offer free delivery.

See delivery page for more information

We stock over 1,000,000 products from the leading brands in the market.

We strive to keep most of our products in stock but if any of our stock lines are low or empty, we will replenish the stock the very next day. You never have to wait too long for us to get your products in if we do not have the item in stock at the time of order.

If you cannot find a bearing on our website, please contact our sales team on 0808 168 1234 . We are often able to source hard to find bearings.

We offer a few different payment methods on our e-commerce store including;

  • All major credit and debit cards (Visa, Mastercard, American Express)
  • PayPal
  • Amazon Pay
  • Apple Pay

We also accept payments by bank transfer and 30-day credit terms. Please call our sales team for more information.

We have shipped to some of the most remote corners of the globe from the Netherlands Antilles to Alaska, 110 countries and counting we ensure we can reach all our customers when they need us.

We ship all our products using our delivery partner DHL and can reach most destinations within 3 days of order.

Please see our delivery page for more information

The majority of our orders reach their destination within 1-3 working days of order, and once your order is placed you will receive your tracking information so you can always check where your parcel is in transit.

Please see our delivery page for more information

UK and Europe – VAT will be charged at the checkout stage and will be refunded if a valid VAT number is supplied

USA and Canada – All taxes and duties are payed by Quality Bearings Online, so you don’t have to worry about your package being held up in customs.

Rest of the World – Taxes and Duties will have to paid within the destination Country (these will differ depending on the Country) DHL will contact you and let you know how much is needed for the shipment to get to its final destination - our sales team would be happy to clarify any of these points at the point of Order.

Although we live in a technological age, sometimes our technology can fail us, and we at Quality Bearings Online cannot guarantee that every time you try and place an order everything will work perfectly first time, so for this we can only apologise, and hope that you won’t lose faith with us because of this.

If you are having issues with the checkout, sometimes this can be down to the browser that you are using or the device you are working on, we recommend using Google Chrome or Mozilla Firefox when placing an order, as we have found some customers using internet explorer have found difficulties in the checkout section of our site.

Alternatively, you could contact our sales team on 0808 168 1234 and they will be able to take the order over the phone and help you to get your order placed and reduce your machine downtime.

At Quality Bearings Online we pride ourselves in providing you with exceptional levels of customer service which extends to our returns policy. We endeavour to make every effort to fulfil valid requests for returns and will refund authorised returns as promptly as possible.

However, please do not return any stock to us without first contacting us to discuss the return of your unwanted items. No returned goods will be accepted without our previous authorisation and goods return number.

Should you wish to return any unwanted orders, please contact us with the following details:

  • Your contact details (Name, address, e-mail and telephone number)
  • What you would like to return
  • Your date of purchase
  • An acceptable reason for return
  • Quality Bearings Online’s order/invoice number

We will do everything possible to comply with reasonable requests for returns and will issue any refund due to you as promptly as possible.

See returns page for more information

We do accept Credit Accounts subject to approval – please contact any member of our sales team on 0808 168 1234 and we will be happy to assist you

Fear not, if you have forgotten your password to access your account there are two things you can do to solve this, you can either;

  • and enter your email address and you will be emailed a link to reset your password so you can access your account once again to check or place your orders.
  • Give our friendly and helpful customer service staff a call on 0808 168 1234 , and they can reset your password over the phone so you can have access to your account once again.

If you wish to change your password at any time, simply log into your account, click on account settings and then enter the new password into the boxes provided and enter your current password and then click update details, once you have done this you should receive an email confirming that your password (or anything else you changed on the account settings) has been saved and updated.

Sometimes the products that have been ordered have been updated/replaced/obsolete, so in these instances we will endeavour to supply you the latest/most up to date product we can.

R&M, Hoffmann and Pollard were all British bearing manufacturers in the 1960/1970’s but all merged into one company called RHP, so if you have ordered one of the old branded bearings we will try and source an exact replacement but if they are no longer available, we will offer you the equivalent product in RHP.

Some manufacturers update their products and change the suffixes, for instance, FAG recently brought out an updated range of products called the X-Life range, these products are the same basic bearings but they have been improved so they may have an extended lifespan, these products will have an XL in the reference, but they are the same bearing.

FAG also brought out a new range of Deep Groove Radial Ball Bearings, which are the C series, these bearings have a slightly different reference on them from the original parts but once again they are the same bearing just an improved version of it, so the references have changed from 2ZR/2RSR to C-2Z/C-2HRS.

Help Section

1/64 0.0156 0.3969 45/64 0.7031 17.8594
1/32 0.0313 0.7938 23/32 0.7188 18.2563
3/64 0.0469 1.1906 47/64 0.7344 18.6531
1/16 0.0625 1.5875 ¾ 0.75 19.05
5/64 0.0781 1.9844 49/64 0.7656 19.4469
3/32 0.0938 2.3813 25/32 0.7813 19.8438
7/64 0.1094 2.7781 51/64 0.7969 20.2406
1/8 0.125 3.175 13/16 0.8125 20.6375
9/64 0.1406 3.5719 53/64 0.8281 21.0344
5/32 0.1563 3.9688 27/32 0.8438 21.4313
11/64 0.1719 4.3656 55/64 0.8594 21.8281
3/16 0.1875 4.7625 7/8 0.875 22.225
13/64 0.2031 5.1594 57/64 0.8906 22.6219
7/32 0.2188 5.5563 29/32 0.9062 23.0188
15/64 0.2344 5.9531 59/64 0.9218 23.4156
¼ 0.25 6.35 15/16 0.9375 23.8125
17/64 0.2656 6.7469 61/64 0.9531 24.2094
9/32 0.2813 7.1438 31/32 0.96875 24.6063
19/64 0.2969 7.5406 63/64 0.9843 25.0031
5/16 0.3125 7.9375 1 1 25.4
21/64 0.3281 8.3344 1.1/4 1.25 31.75
11/32 0.3438 8.7313 1.1/2 1.5 38.1
23/64 0.3594 9.1281 1.3/4 1.75 44.45
3/8 0.375 9.525 2 2 50.8
25/64 0.3906 9.9219 2.1/4 2.25 57.15
13/32 0.4063 10.3188 2.1/2 2.5 63.5
27/64 0.4219 10.7156 2.3/4 2.75 69.85
7/16 0.4375 11.1125 3 3 76.2
29/64 0.4531 11.5094 3.1/2 3.5 88.9
15/32 0.4688 11.9063 4 4 101.6
31/64 0.4844 12.3031 4.1/2 4.5 114.3
½ 0.5 12.7 5 5 127
33/64 0.5156 13.0969 6 6 152.4
17/32 0.5313 13.4938 8 8 203.2
35/64 0.5469 13.8906 10 10 254
9/16 0.5625 14.2875 20 20 508
37/64 0.5781 14.6844 30 30 762
19/32 0.5938 15.0813 40 40 1016
39/64 0.6094 15.4781 60 60 1524
5/8 0.625 15.875 80 80 2032
41/64 0.6406 16.2719 100 100 2540
21/32 0.6563 16.6688      
43/64 0.6719 17.0656      
11/16 0.6875 17.4625      
Stainless Steel W S H (Suffix)  

Deep Groove

Single Rubber Seal RS1/RSH RSR/C-HRS RS DU
Single Metal Shield Z ZR/C-Z Z Z