Caged Ball LM Guide Super-Low Waving Model SPS

Model SPS achieves super-low waving comparable to hydrostatic guides. In addition, the deformation of the ball is minimized to achieve ultra-high rigidity that surpasses even roller guides.

  • Long-term maintenance free
  • High rigidity
  • Super-rigid
  • Ultra-rigid
  • High accuracy
  • Ultra-high accuracy
  • 8 grooves
  • Super-low waving
  • 4-way equal load

Size : 15,20,25,30,35,45

Types

Highlight feature tags

  • Ultra long block
  • Bolts mounted from above
Model SPS-LR
  • Ultra long block
  • Bolts mounted from above

Basic load rating (kN): Basic dynamic load rating 15.9 to 126 / Basic static load rating 41.2 307
Size : 15,20,25,30,35,45

Features

We achieve ultra-low waving and high rigidity through our unique technology.

Eight raceway grooves
Doubling the number of grooves halves the load on the balls and enables ultra-low waving on a nanoscopic scale.

Small-diameter balls
The increased number of loadbearing balls stabilizes support and reduces compression when under a load.

Ultra-long blocks
More balls can be incorporated, reducing each ball's individual load.Demonstrates ultra-low waving and ultra-high rigidity.

Ultra-low waving

Ultra-low waving performance that breaks conventional standards.
Proficient in nanometer stroke applications.

Waving Evaluation

The product was installed on a single-axis table, and the vertical and horizontal displacement during operation was measured. SPR/SPS models have 1/10 the waving value compared to our conventional, standard LM Guide models (100 nm-300 nm).

Conditions
Tested model SPS25LR
Rail span 250mm
Block span 250mm
Measurement point Upper 250 mm of
the middle of the table
Measurement direction Vertical and horizontal

Ultra-high Rigidity

Achieves overwhelming rigidity with small-diameter balls and ultra-long blocks.
Improves the precision of load-bearing strokes and provides stable motion.

Rigidity Comparison and Evaluation

A force was applied to the product from above or below, and the resulting displacement was measured. It achieves even higher rigidity than a roller guide.

* This test was intended to compare the clearance C1.

Lineup

Each Model

Model No.

15 20 25 30 35 45
SPS

Positions each ball at a contact angle of 45° and bears load from all directions.
Can be used in various positions such as horizontally and upside down.

Detailed information for each model number

Dimensional drawing/Dimensional table

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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.

Standard Lengths and Maximum Lengths of LM Rails

THK Online Services
Member-Exclusive Content

These contents can be accessed

after registering as a member.

Log in/Register Click here for THK Online Services details

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.