Technical Information
(Product-Related Technical Materials/SDS Downloads)

See below for examples of technical information that will help you with the selection, design, and maintenance of each product.

Please create a free account or log in to our Technical Support Site to view other technical materials and download the SDS (Safety Data Sheet) for the grease used to lubricate products.

 

 

 

Make your ball screw last longer!
How to Apply Grease to a Ball Screw.

Why is it necessary to grease a ball screw?

To get the full performance from a ball screw, it is important that the rolling elements function properly.

Using a ball screw continuously without greasing it causes metal-to- metal contact. When the ball screw is greased, the metal surfaces are covered with an oil film.

Enlarged view of ball screw rolling element
 Enlarged view of ball screw rolling element
Enlarged view of ball screw rolling element
Growing friction of the rolling elements causes seizure and increased wear, leading to premature failure. Grease reduces wear and heat generation and can also prevent rust.
It is essential to grease a ball screw to achieve and maintain its full performance!

 

How to apply grease
1/2 turn
1/2 turn
※Grease gun:If 1 shot = 0.7 cm3 and the application amount is 7.0 cm3, apply 10 shots.
Approx. 3 times

Approx. 3 times  

 

※If the effective thread length is less than 3 times the nut length, move it within the allowable stroke range.

Apply the specified amount of grease, rotating the shaft by half a turn for each shot from the grease gun.

After applying grease, move the nut by approximately three times the overall length of the nut so that the grease reaches the whole of the component.

 

Caution

If you do not rotate the shaft while applying grease, the grease will run off of the seals, etc., and the specified amount will not be supplied to the nut.
Wipe off the grease that has come out, and re-apply the grease, following the application method.

Caution

※Please contact THK regarding the amount of grease to apply.

 

Please create a free account or log in to our Technical Support Site to view other technical information.

How to select a representative LM Guide

The LM Guide has a wide variety

All models of the LM Guides looks similar at first glance...
By knowing the features of each model number, you can select the optimal model for your equipment.

The LM Guide has a wide variety

 


Here are 4 representative classifications that are frequently used.

LM Guide-4 classifications
  Caged Ball Type Full-Ball Type
(Without Ball Cage)
Radial type SSR
SSR
SR
SR
4-way equal load type SHS
SHS
HSR
HSR

 

Here are the “radial type” and “4-way equal load type,” whose structures differ greatly.
Depending on the direction of the applied load, you can select the most suitable one.

Difference between "Radial type" and "4-way equal load"
Radial type 4-way equal load type
Radial type 4-way equal load type
This type is strong against loads from above. It is most suitable for horizontal use, which is the most popular mounting orientation for the LM Guide.

for horizontal use.
This type has equal load capacity from all directions. For this reason, it is suitable for vertical and wall mount use.
for vertical and wall mount use.
Representative models
Caged Ball Type:SSR
Full-Ball Type (Without Ball Cage):SR
Representative models
Caged Ball Type:SHS
Full-Ball Type (Without Ball Cage):HSR

 

 

Please create a free account or log in to our Technical Support Site.

 

 

Product-Lubricating Grease Safety Data Sheets

You can download the SDS (Safety Data Sheet) for the grease used to lubricate products from our Technical Support Site.

* To access the Technical Support Site, you must create a free account or log in.

Product-Lubricating Grease Safety Data Sheets  SDS(Safety Data Sheet)

 

 




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