background image

4-2

4. Lubrication

4.  

Lubrication

Linear Bushing

Normally, relubricate using the same grease type and through the lubrication hole or grease 
nipple provided on the Linear Bushing. Mixing different types of grease may deteriorate the 
system’s performance due to increased consistency or other such factor.

Lubricant

Type

Brand name

Grease

Lithium-Based Grease 
Urea-Based Grease
Calcium-Based Grease

AFA Grease

(THK)

AFB-LF Grease

(THK)

AFC Grease

(THK)

AFE-CA Grease

(THK)

AFF Grease

(THK)

AFG Grease

(THK)

AFJ Grease

(THK)

L100 Grease

(THK)

L450 Grease

(THK)

L500 Grease

(THK)

L700 Grease

(THK)

Alvania Grease S No.2 (Showa Shell Sekiyu)

Eponex Grease No.2 (Idemitsu Kosan)

or equivalent

*The recommended grease will vary according to the usage conditions and environment.

4-1-2 

 

Oil Lubrication

LM systems that require oil lubrication are shipped with only anti-rust oil applied. When placing 
an order, specify the required lubricant oil.

 

z

The amount of oil to be applied varies depending on the stroke length. For a long stroke, 
increase the lubrication frequency or the amount of oil applied so that an oil film is able to form 
in the stroke end of the raceway.

 

z

In environments where coolant may spatter, the lubricant may become mixed with the coolant. 
This could result in the lubricant being emulsified or washed away, causing significantly 
degraded lubrication performance. In such locations, apply a lubricant with high viscosity 
(kinematic viscosity: approx. 68 cst) and high emulsification resistance, and adjust the 
lubrication frequency or the amount of the applied lubricant accordingly.

 

z

For machine tools and similar devices that are subject to heavy loads, require high rigidity, and 
operate at high speed, oil lubrication is recommended.

 

z

Make sure that lubrication oil discharges normally from the ends of the lubrication piping; that 
is, the oiling ports that connect to your linear motion system.

Lubricant

Type

Brand name

Oil

Raceway Oil or Turbine Oil 
ISOVG32 to 68

Daphne Super Multi Oil (Idemitsu Kosan)
Mobil DTE Oil Series (Exxon Mobil)
Shell Tonna S3 M (Showa Shell Sekiyu)
Mobil Vactra Numbered Series (Exxon Mobil)
Mobil Vactra No. 2 SLC (Exxon Mobil)

or equivalent

www.thk.ru

тел. +7(499) 703-39-86

sales@thk.ru

Summary of Contents for Linear Bushing

Page 1: ...Instruction Manual No 1030 T34670 Linear Bushing THK Linear Motion System www thk ru 7 499 703 39 86 sales thk ru...

Page 2: ...Precautions on Use 2 1 2 1 Safety Related Warning Displays 2 1 2 2 Handling 2 1 2 3 Precautions on Use 2 2 2 4 Lubrication 2 3 2 5 Storage 2 3 2 6 Disposal 2 3 3 Assembly 3 1 3 1 Mounting the Outer Cy...

Page 3: ...ry 1 2 3 Notice and Attention z z Do not handle or use this product in any way other than as described in this manual z z No part of this manual may be duplicated reproduced or loaned without permissi...

Page 4: ...roduct failure When using this product in equipment where failure of this product could cause a severe accident or damage install a safety device or backup device to prevent the occurrence of severe a...

Page 5: ...d result in physical injury or material damage Prohibited never do this Required always do this 2 2 Handling C A U T I O N Do not disassemble z z Disassembling components may cause dust to enter the s...

Page 6: ...ensure that an oil film forms between the raceway and the rolling elements Maximum temperature 80 C Max z z Do not use this product if the external temperature exceeds 80 C If used in excess of this...

Page 7: ...resistance will be affected by changes in consistency z z Following greasing the stirring resistance of the grease can cause the Linear Bushing to exhibit increased sliding resistance Before commenci...

Page 8: ...ME H7 K6 J6 LMF High accuracy grade no symbol H7 J7 LMK LMH LM L LMF L LMK L LMH L LMIF LMIK LMIH LMIF L LMIK L LMIH L LMCF L LMCK L LMCH L Clearance between the Outer Cylinder and LM Shaft When using...

Page 9: ...F L LMCK L LMCH L 3 1 Mounting the Outer Cylinder Although the Linear Bushing does not require a large amount of strength for securing it in the LM shaft direction do not rely only on a press fit to s...

Page 10: ...snap ring LM 3 AR 7 LM 4 8 LM 5 WR 10 10 10 10 LM 6 12 12 12 12 LM 8 15 15 15 LM 8S 15 15 15 LM 10 19 19 19 19 LM 12 21 21 21 21 LM 13 23 22 23 LM 16 28 28 28 LM 20 32 32 32 LM 25 40 40 40 40 LM 30 4...

Page 11: ...the outer diameter to facilitate adjustment of the clearance between the Linear Bushing and the LM shaft Positioning the Linear Bushing slit at a 90 angle to the housing slit will apply uniform deform...

Page 12: ...be attached from the top or bottom by simply tightening the bolts the installation time can be shortened Figure 3 6 Figure 3 6 Mounting Model SC SL z z Mounting Model SH SH L Since models SH and SH L...

Page 13: ...oad When using the Linear Bushing make sure the load is evenly distributed across the entire ball raceway In particular if a moment load is to be applied use two or more Linear Bushing units on the sa...

Page 14: ...M Felt Seal The felt seal can be press fit into a housing finished to H7 but cannot be used as a stopper for preventing the Linear Bushing from detaching Be sure to attach the felt seal as shown in Fi...

Page 15: ...Bushing Then depending on the usage state either apply as described above when appropriate provide a housing as shown in Figure 4 1 or apply grease to the LM shaft We recommend using high quality lit...

Page 16: ...troke increase the lubrication frequency or the amount of oil applied so that an oil film is able to form in the stroke end of the raceway z z In environments where coolant may spatter the lubricant m...

Page 17: ...ndix Revision History The instruction manual number is on the back cover Publication Date Instruction Manual No Revisions December 2017 No 1030 T34670 First edition www thk ru 7 499 703 39 86 sales th...

Page 18: ...No 1030 T34670 Inquiries Website URL https www thk com eng Technical support site URL https tech thk com www thk ru 7 499 703 39 86 sales thk ru...

Reviews: