Linear Bearings

Linear Bearings of all shapes and sizes including round shaft bushes, vee bearings & rails, and profiled rail systems.

Corrosion Resistant Linear Motion

combined roller bearing with TDC coating
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In some applications, it is necessary to specify corrosion resistant products (e.g. food, drink & pharmaceuticals) while in other applications it may be desirable but not essential (e.g. offshore, external use). While a few linear motion products are available in stainless steel, there are often high prices, long lead times & lower load capacities associated with specifying stainless steel.

So what options are there?

For light duty applications there are a few options available in stainless steel. For example miniature motion guidance, round shaft linear products and track guidance systems.

For heavy duty applications there is little choice but some products can be made corrosion resistant by the use of coatings. The most effective coating for linear motion systems is Thin Dense Chromium (TDC). TDC coating provides a hard finish which is able to withstand the high contact load between the bearing and its corresponding track.

Which Products are available?

Euro-Bearings Ltd can offer Combined Roller Bearings with TDC coating to provide a heavy duty corrosion resistant linear motion system. The bearings retain their load capacities (unlike stainless steel alternatives) and maintenance and downtime can be reduced. The TDC coating can also be applied to the rails (channel) and flanged clamps if desired. The combined roller bearings offer a versatile linear motion system which can be used in horizontal, vertical or cantilevered applications.

Euro-Bearings Ltd’s Combined Roller Bearings & Rails with TDC corrosion resistant coating

Another linear motion system to benefit from TDC coating is Vee bearings. While the Vee bearings themselves can be supplied in stainless steel, the T rail to suit the bearings is not so readily available due to the high costs associated with stainless steel. The rails can be TDC coated after any necessary fabrication work and the lead time can be as little as two weeks.

What should I choose?

Every linear motion application should be assessed individually. Use our flow chart to help select which product might be suitable, or ask our technical sales team for advice.

If corrosion resistance is required then consider the following products:

Light to medium duty –
Miniature Motion Guidance (Stainless steel)
Linear bearings & shafts (Stainless steel)
Track Guidance System (Stainless steel)
Exterior Slide System (Aluminium & Delrin)
Vee Bearings & Rails (Stainless steel or TDC coated)

Heavy duty –
Combined Roller Bearings (TDC coated) & Channel (TDC coated or Stainless steel)
Linear bearings & shafts (Stainless steel – small range & lead times are likely to be long)

Summary

Traditionally, corrosion resistance of linear motion products has been provided in the form of stainless steel. However, today, coatings such as Thin Dense Chromium can provide corrosion resistance to bearings without compromising on load capacities and incurring long lead times.

Range of Products to Buy Online

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Euro-Bearings Ltd’s online shop has been revamped to be more user friendly. It offers wide range of Linear Bearings, Vee Bearings, Anti-Vibration Mounts & Combined Roller Bearings, all of which are available to buy online. Our technical sales team are on hand should you need any help with selecting the right product.

image of Euro-Bearings Ltd's online shop
Euro-Bearings Ltd’s new e-commerce website offering a wide range of products including Anti-Vibration Mounts, Linear Bearings and Linear Housings, Vee Bearings and Vee Rails, and Combined Roller Bearings and their corresponding Steel Profiles.

Quiet Linear Motion from Euro-Bearings Ltd

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Linear Motion without noise – Vulkollan coated bearings for use with steel C rails

Are you looking for a quiet linear motion system? Then look no further. Our new Vulkollan coated bearings are designed to run in our steel C channels to make a sliding system that is both smooth and quiet.

Choose from V.053P (52.5mm ø) or V.054P (62.5mm ø).
V.054P is also available in stainless steel.

The Oilamid rubbing block can be adjusted – by simply turning a screw – to provide axial guidance and support which helps the system to run true.

Full details can be found here

Linear shafts – now on stock!

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We can supply both standard hardened & ground (Cf53) shaft AND also stainless linear shaft (X90CrMoV18) from stock.

All shafts have a tolerance of h6 for running linear bearings on.

Please tell us the quantities and lengths you require for a quotation.

A Quick Guide to Choosing the Best Linear Motion Product

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There is a vast range of linear motion products on the market and it can be difficult to know which product to select. This article discusses the various types of products available according to their rolling element and explores their advantages, disadvantages and limitations. Finally a selection chart clearly lists each product’s characteristics to help with specifying the best linear motion product.

Some of our linear motion products are shown in the table below:

Linear Bearings, Housings, Shafts & Supports Heavy Duty Rollers (NUTR, NUKR, NNTR) Vee Bearings Motion Guidance Systems (Standard & Aluminium)
Miniature Motion Guidance Track Guidance System Combined Roller Bearings Plain Sliding Linear Bearings

What are Linear Motion Products?

 The primary purpose of linear motion products is to move something from one place to another in one direction along a straight line. Usually this is achieved using a bearing with a rolling element. Traditionally this rolling element would be a ball or roller, but these days some linear motion bearings do not incorporate a rolling element and consequently are known as ‘plain’ bearings. These plain bearings are simply plastic or ceramic bushes and are sometimes lined with PTFE or oil impregnated plastic to help reduce the sliding friction. Continue reading →