A linear guideway allows a type of linear motion that utilizes rolling elements such as balls or rollers orrollers.
By using re-circulating elements between the rail and the block, a linear guideway can achievehigh precision linear motion.
Compared to a traditional slide,the coefficient of friction for a linear guidewayis only 1/50.
Because of the restraint effect between the rails and the blocks,
linear guideways can takeup loads in both the up/down and the left/right direcyions.
With these features,linear guideways,linearguideways can greatly enhance moving accuracy,
especially,when accompanied with precise Ball Screws.
Advantages and Features of Linear Guideways
(1)High pasitional accuracy
When a load is driven by a linear motion guideway.the frictionel contacy between the load and the bed desk isrolling contact.
The coefficient of friction is only "1/50 of traditional contact,
and the difference between thedynamic and the static coefficient of friction is small.
Therefore,there would be no slippage while the load is moving.
(2)Long life with high moction accuracy
With a traditional slide,errors in a ccuracy are caused by the counter flow of the oil film.
Insufficient lubricationcauses wear between the contact surfaces,which become increasingly inaccurate.
In contrast,rolling contact haslitle wear;theretore,machines can achieve a long life with highly accurate motion.
(3)High speed motion is possible with a low driving force
Because linear guidewsys have little friction resistance,only a small driving force is needed to move a load.
This results in greater power savings,especially in the moving parts of a system.
This is especially true forthe reciprocating parts.
(4)Easy installation
Installing linear guideways is relatively simple. By grinding or milling the machine surface,
following the recommended installation procedure,
and tightening the bolts to their specified torque, highly accurate linear motion can be achieved.
(5)Equal loading capacity in all directions
With this special design,these linear guldeways can take loads in either the vertical or horizontal directions.
Conventional linear slides can only take small loads in the direction parallel to the contact surface.
They arealso more likely to become inaccurate when they are subjected to these loads.
(6)Easy lubrication
With a traditional sliding system,insufficient lubrication causes wear on the contact suriaces.
Also, it can be quitedificult to supply sufficient lubrication
to the contact surfaces because finding an appropriate lubrication pointis not very easy.
With a linear motion guideway.grease can be easily supplied through the grease nipple on thequideways block.
It is also possible to utiizee a centralized oil lubrication system by piping the lubrication oil tothe piping joint.
In conclusion, linear guideways offer a range of advantages
and features that make them a popular choice for achieving high precision linear motion.