Silverthin is widely recognised as a global leader in the design and manufacture of high-precision precision thin section bearings

Thin section bearings provide design engineers with the ideal solution for applications where space is limited, weight needs to be minimized and absolute precision must be guaranteed. Carter offers the full range of Silverthin thin section bearings, all available either from stock or on industry-leading short lead times. Our business is built on the proven ability to exceed customer expectations and deliver solutions that are perfectly matched to an application.

Silverthin thin-section bearings are cost efficient and space saving. They offer significant cost-reduction opportunities by allowing engineers to downsize designs and reduce weight. Silverthin thin section bearings range in size from 25mm in diameter to more than 1000mm, and are also available in inch sizes. Silverthin routinely manufactures large volume orders but retains the flexible production engineering capability to produce thin section bearings for both prototyping and small-run applications when customers have special requirements. If we cannot provide a solution direct from our extensive stocks, the expert Carter engineering team can assist with the design and supply of custom Silverthin thin section bearings featuring a choice of popular bespoke options.

These custom options can include special bearing race materials for high corrosion resistance as well as application-matched alternative materials for different ball and cage types. Further customization is offered with a choice of lubrication options that are precisely matched to a given application and, critically for many users, the Carter engineering team can also advise on (and deliver) specially made Silverthin thin-section bearings with specified clearances and preloads as well as other ultra-high precision options.

Silverthin bearings save weight and space to maximise design options

Vast choice of Standard catalogue products instantly available from UK stock, full custom units available on ultra-short lead times

Comprehensive and experienced expert engineering support together with bespoke application simulation for all custom requirements

Whereas standard bearings are designed so that the bearing thickness increases proportionately as the bore size gets bigger, in the case of thin section bearings, the sectional thickness of the bearing remains fixed even though the bore size increases. Silverthin has been producing a comprehensive standard range of thin section bearings for many years and Carter specialist bearing experts use this experience and their acquired knowledge to solve some of the world’s most demanding and challenging bearing applications.


The accomplished and experienced Carter engineering team, combined with the unrivalled manufacturing resource and competence of Silverthin, provides engineers and OEMs with an unrivalled commitment to quality. This partnership also provides us with the ability to react swiftly to special customer requirements by quickly adapting production to provide customized, bespoke thin section bearing solutions on very short lead times when required. Carter customers specifying Silverthin products can remain confident that only bearings of the best quality will be supplied, with the benefit of many years of exemplary service across every precision engineering industry to rely on.

Carter has been Silverthin’s chosen European Master Distributor for over fifteen years, a unique relationship that allows customers access to unrivalled shared knowledge and get the best from thin-section bearings. A premium-quality product range coupled with the experienced Carter thin-section application engineering team provides designers and manufacturers with unmatched, comprehensive and complete technical support and design advice at every stage of a project. From initial concepts and outline planning right through to detailed performance calculations and specifications, prototyping, testing, manufacture and supply, the partnership between Carter and Silverthin continues to make the critical difference for many leading OEMs.


Our business and reputation have always been based on understanding customers engineering requirements and providing bearing solutions that exceed expectations. We take pride in delivering cost-reduction opportunities by providing our customers with cost efficiency advantages in their industries, giving them the edge over their competitors. Get in touch with us today with your thin section bearing requirements and one of our expert thin section bearing engineers will be pleased to discuss your engineering application.


Silverthin and Carter specialize in thin section bearings for space reduction and weight saving in high technology environments. We bring an unsurpassed reputation for helping leading manufacturers reduce weight, cost and complexity in key sectors including aerospace and defence, satellite, radar, optical devices, gimbals, Ultra-high vacuum, semiconductor, medical device and oil & gas industries. Industrial machinery also continues to be a burgeoning application area where weight-loss and space saving in automation and robotics are increasingly vital requirements.

The partnership between Carter and Silverthin is big enough to deal with large production volumes yet compact and flexible enough to provide valuable small volume production and custom application support. We can do this on ultra-short lead times. Silverthin thin-section bearings are premium quality products manufactured in the USA to ABMA ISO:9001 certified standards using only American steel. The partnership between Silverthin and Carter provides customers with a globally experienced engineering team that employs state of the art manufacturing processes, Solidworks/FEA and unique bearing life calculation software which remains at the forefront of bearing performance evaluation technology. These attributes combine to deliver cost saving, weight saving and space saving where quality and durability are all critical.


Silverthin offers an aerospace-certified relubrication facility for the special lubrication of Silverthin thin section bearings to customer-specific requirements across all applications. This has proven especially useful in the ultra high vacuum and space exploration sectors. Silverthin thin section bearings can be manufactured in many special materials including 440C stainless steel, M50 tool steel and BG42 a speciality alloy. Custom balls options are also available in alternative materials such as silicon nitride ceramic, M50 tool steel, industrial ruby and BG42 speciality alloy to suit challenging applications. Standard bearing rings can be coated with nodular thin dense chrome (NTDC) offering a corrosion resistance equivalent to 440C stainless steel while maintaining the properties of 52100 bearing steel. Thin dense chrome offers extreme hardness, typically 70 – 78 Rockwell C and thus offers significant extensions to bearing life. Unlike other manufacturers, Silverthin has no minimum order quantity for this process.

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For many leading OEMs, Carter and Silverthin Bearing Group have become the go-to source for standard and special engineered thin section bearings. Available either from stock or custom made to an application, Silverthin thin section bearings are high precision, lightweight and space-saving solutions for demanding, precise applications worldwide. Our strength is offering technical engineering expertise to help customers select the optimum thin section bearing for a diverse range of unique applications.

Kevin McNulty, Vice President, Silverthin Bearing Group

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