Caged Ball LM Guide Miniature Type Model SRS Model SRS-WS

Has a longer overall LM block length (L), a greater width and a larger rated load and permissible moment than SRS-S.

Long-term maintenance free
High accuracy
4-way equal load
Miniature
Wide block
Bolts mounted from above
Short block (LM Guide)

Basic load rating (kN): Basic dynamic load rating 1.38 to 6.64 / Basic static load rating 1.35 to 6.78
Size : 7,9,12,15

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Detailed information

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Products	Contents
LM Guide	LM rail standard lengths and maximum length, tapped-hole type LM rail, frame for LM rail clamps, steel plate for LM rail clamps, etc.
Ball Screw	Axial clearance, maximum manufacturing length of shaft, etc.
Actuator	Movable part mass, etc.

Optional

Block Compatible Option

Seal and Metal Scraper

Rail Compatible Option

Cover

Plate Cover SV
Plate Cover
Steel Tape SP
Dedicated Bellows
Dedicated LM Cover

Cap

Dedicated Cap for LM Rail Mounting Holes Cap CV/Cap C
Dedicated Cap for LM Rail Mounting Holes Cap GC

Block Compatible Option

QZ Lubricator
The LM Block Dimension with QZ is Attached

Block and Rail Compatible Option

Surface Treatment

Material

Lubrication Adapter
Removing/mounting Jig
End Piece EP

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Detailed information: Dimensional drawing/Dimensional table

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Detailed information

Dimensional drawing/Dimensional table

Notes on dimensional table

Note) Since stainless steel is used in the LM block, LM rail and balls, these models are highly resistant to corrosion and environment. The SRS-G is equipped with uncaged, full-complement bearings. Note2) Using a greasing hole other than for greasing may cause damage.

Note1) The maximum length under "Length * " indicates the standard maximum length of an LM rail.(See Standard Length and Maximum Length of the LM Rail)

Static permissible moment *

1 block: the static permissible moment with one LM block
Double blocks: static permissible moment when two LM blocks are in close contact with each other

Total block length L : The total block length L shown in the table is the length with the dust proof parts, code UU or SS. If other contamination protection accessories or lubricant equipment are installed, thetotal block length will increase. (See LM Block Dimension (Dimension L) with LiCS Attached or LM Block Dimension (Dimension L) with QZ Attached) For the SRS5M and SRS5N LM guide, the balls will fall out of the block if it is removed from the rail.

Note2) The basic load rating in the dimension table is for a load in the radial direction. Use Table7 on Calculating the Equivalent Load to calculate the load rating for loads in the reverse radial direction or lateral direction.

● Reference bolt tightening torque when mounting an LM block for model SRS 5 and 7 are shown in the table below.

Reference tightening torque

Model No.	Model No. of screw	Screw depth (mm)	Reference tighteningtorque(N･m) *
SRS 5W	M3	2.3	0.4
SRS 7W	M3	2.8	0.4

* Tightening above the tightening torque affects accuracy. Be sure to tighten at or below the defined tightening torque.

Model number coding

(*1)No symbol for 1 LM block.
(*2)See Contamination protection accessory symbol
(*3)See Radial Clearance Standard
(*4)See Accuracy Standard
(*5)See Symbol for No. of rails used on the same plane

Note) This model number indicates that a single-rail unit constitutes one set. (i.e., required number of sets when 2 rails are used in parallel is 2 at a minimum.) Those models equipped with QZ Lubricator cannot have a grease nipple. When desiring a grease nipple for a model attached with QZ, contact THK.

Notes on Ordering

[Order units]

Note that the number of items that constitute one set differs depending on the type of LM guide. Check the sample model number configurations and the accompanying notes.

Sample LM guide orders

THK Online Services
Member-Exclusive Content

These contents can be accessed

after registering as a member.

Benefit 1: Useful features

Easy product comparisonsHighlight feature
Save items for laterreview Favorites feature

Benefit 2: Exclusive content

Products	Contents
LM Guide	LM rail standard lengths and maximum length, tapped-hole type LM rail, frame for LM rail clamps, steel plate for LM rail clamps, etc.
Ball Screw	Axial clearance, maximum manufacturing length of shaft, etc.
Actuator	Movable part mass, etc.

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Model No.	Optimal Product Selection Tool*	Life Calculator*	CAD Download*	Catalog Download	Manual Download
SRS7WS
SRS7WGS
SRS9WS
SRS9WGS
SRS12WS
SRS12WGS
SRS15WS
SRS15WGS

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