A linear guide, or linear rail, is a system which helps with the movement and supporting of the load of a piece of equipment in a linear fashion, either vertically or horizontally. We have a high load, high precision, gothic arc profile linear guide system to DIN 645 interchangeable with other major competitors systems. Miniature versions of this system are also stocked in hardened stainless steel.
We also have roller bearing linear guides which allow for misalignment in the system when using a pair of guides, making installation quicker and more cost effective. These come in a precision range or a low cost range available in AISI 316 stainless steel, ideal for applications such as marine based ones where corrosion resistance is necessary.
Make sure you request a free Linear Motion Handbook here and utilise our free CAD to help you save time planning your projects.
Our anodised aluminium linear guides offer a 60% weight reduction over standard steel or stainless steel. They contain hardened stainless steel raceways for added durability. 15, 20 and 25mm versions available. Compatible with standard carriages (e.g. L1016.F) or special aluminium carriages L1018.F and L1018.U.
X-rails are highly cost-effective systems for linear motion. Shown here in zinc-plated steel (L1970) but also available in stainless steel (L1971) for added corrosion resistance. For more information, see our X-rail technical page or our catalogue. Excellent for applications such as drawers, protective screens, battery casings etc.
Carriages for linear guide shafts with support rail. Available in many configurations.
Hardened steel linear guide shafts with h6 standard tolerance. Special tolerances by request. 5 - 60mm diameter.
Linear ball bushings for use with linear guide shafts. Open, closed or adjustable versions in stock. Superball variation with higher load rating and longer service life also available.
Stainless steel body and balls (AISI 440C) with either a resin (POM) or stainless steel (AISI 316) retainer. Supplied with nitrile rubber end seals. Flanged and long versions available.
Easy slide high-load guides come in sizes 28, 35, 43 or 63. They are made from zinc-plated steel with induction-hardened steel raceways.
• A number of load figures are stated for load capacity:
Dynamic Load – this is the main fi gure considered for linear guideways. It is the moving load that the system can bear. It takes account of the total moving load as well as considerations such as impact, vibration and fatigue.
Static Load – this is a load that is constant for an extended time (i.e. the dead load the system can bear before any movement). It can be in tension or compression.
For these linear guideways the radial and axial load capacities are the same.
Moment loads are twisting loads generated by off set loads in either X, Y or Z planes. Moment loads can be reduced by adding further carriages or rails to reduce any twisting of the carriage due to the load off set.
Our new and improved linear guideway systems include the latest “ball chain” technology with the following benefits:
The rotating balls in conventional profile rail guides have point contact between each other. The rotation speed at the contact point is double the speed of the balls. The contact area (A) is so small that the surface pressure (P) tends towards infinity. This leads to heating and wear of the balls and the linear guide system.
The chain system in our new linear guides have a relatively large contact area (A), this significantly reduces the surface area pressure (P). The rotation speeds at the contact surfaces of ball and chain are the same. The ball chain is used to transport the lubricant and to create a lubrication film on the balls. The design of the carriage allows effective supply of lubricant from the lubricant connection to the circulation areas of the ball chains.
This design of the of the ball chain ends in connection with the spacer ball closes the circulation and makes the movement of the carriage smooth and quiet.
It is not possible to keep the distance of the balls (C1, C2) constant in conventional linear guides. These irregular distances between the balls lead to uneven running behaviour.
The new ball chain system also allows the balls to be continuously supplied with lubricant, which reduces wear of the metal. This significantly extends the service life of the system and reduces lubricant and the maintenance intervals.
We can coat our rail with a type of corrosion protective finish:
- Raydent coating; this is an electro-chemical process that applies a black oxide-ceramic layer (approx. 1 micron thick) that penetrates into the metal. As coating takes place at OC the parts are not deformed. Good resistance against acids, bases and solvents.
Where there may be a high level of dust, dirt, weld splatters etc. we can provide bellows covers to protect the rails.