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5-1

5. Dimensional 

Tolerance

LM Guide

5.  

Dimensional Tolerance of the Mounting Surface

The LM Guide allows smooth straight motion through its self-aligning capability even when there 

is a slight distortion or error on the mounting surface.

 

z

Error Allowance in the Parallelism between Two Rails

A mounting surface error of the LM Guide may affect the service life. See the general catalog for 

the error allowance of the mounting surface for each model number in general use.

P

Figure 5-1 Error Allowance in the Parallelism (P) between Two Rails

 

z

 

Error Allowance in Vertical Level between Two Rails

Error allowances in vertical level between two rails per axis-to-axis distance of 500 mm are 

proportionate to axis-to-axis distances (200 mm for models SRS and RSR).

S

Figure 5-2 Error Allowance in Vertical Level (S) between Two Rails

Содержание LM Guide

Страница 1: ...Instruction Manual No 1030 T34667 LM Guide THK Linear Motion System...

Страница 2: ...2 3 3 Marking on the Master Rail and Combined Use 3 1 3 1 Marking on the Master LM Guide 3 1 3 2 Marking on the Reference Surface 3 1 3 3 Serial Number Marking and Combined Use of an LM Rail and LM Bl...

Страница 3: ...ecessary 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 pe...

Страница 4: ...completely rule out product 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 o...

Страница 5: ...a dolly or other conveyance Failure to do so could cause injury or damage the product Do not disassemble z z Do not disassemble the parts This could impair the product s functions Falling objects z z...

Страница 6: ...functions z z When work unavoidably requires removing mounting the LM block from onto the LM rail use the removing mounting jig to perform the work The removing mounting jig is not provided as standar...

Страница 7: ...ase is adequately integrated and dispersed z z Excess grease may spatter immediately after lubrication Wipe off spattered grease as necessary z z The properties of the grease deteriorate over time the...

Страница 8: ...sed as the master LM rail 3 2 Marking on the Reference Surface In the LM Guide the reference surface of the LM block is opposite the surface marked with the THK logo and the reference surface of the L...

Страница 9: ...4 are correctly positioned When two LM Guides with connected LM rails are to be arranged in parallel to each other the two LM Guides will be manufactured so that the two LM Guides are axisymmetrically...

Страница 10: ...by wiping the surface with washing oil before using the LM Guide Once the anti rust oil has been removed the reference surface is prone to getting rusted We recommend applying low viscosity spindle oi...

Страница 11: ...the same level as the top face of the rail Mounting the LM Blocks 1 Gently place the table on the LM blocks and temporarily fasten the mounting bolts 2 Press the master side LM blocks against the sid...

Страница 12: ...fully fasten the bolt Perform this in the proper order from one rail end to the other Figure 4 9 Mounting the Subsidiary LM Rail To mount the subsidiary LM rail in parallel with the correctly mounted...

Страница 13: ...w the Master LM Rail Place the table on the LM blocks of the correctly mounted master LM rail and the temporarily fastened subsidiary LM rail and fully fasten the two LM blocks on the master rail and...

Страница 14: ...to achieve straight ness of the LM rail from the rail end In this method two LM blocks must be joined together and fixed to a mea surement plate as shown in Figure 4 15 z z Using a Straight edge After...

Страница 15: ...are tightened with bolts for the final grinding of the raceways and for the accuracy inspection When mounting a high precision LM rail onto a machine we recommend using the corresponding tightening to...

Страница 16: ...nternal components or slight inclination Mounting the LM block with some of the rolling elements missing may cause early damage When using the removing mounting jig do not incline the jig and be sure...

Страница 17: ...error of the LM Guide may affect the service life See the general catalog for the error allowance of the mounting surface for each model number in general use P Figure 5 1 Error Allowance in the Paral...

Страница 18: ...g for the installation direction of the LM Guide Even with an LM Guide with seals the internal lubricant gradually seeps out during operation Therefore the system needs to be lubricated at an appropri...

Страница 19: ...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 appli...

Страница 20: ...LM rail This reduces abrasion of the dust prevention seal and protects the seal When using the LM Guide in an environment where foreign materials can adhere easily to the LM rail we recommend taking m...

Страница 21: ...hod With this method a given amount of lubricant is forcibly fed at set intervals using an automatic pump Figure 6 2 Although a special lubrication system using a pipe or the like needs to be designed...

Страница 22: ...Appendix Revision History The instruction manual number is on the back cover Publication Date Instruction Manual No Revisions December 2017 No 1030 T34667 First edition...

Страница 23: ...No 1030 T34667 Inquiries Website URL https www thk com eng Technical support site URL https tech thk com...

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