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Full-Ball Type Precision Ball Screw High-Speed Ball Screw for Machine Tools Model BSM

Our new ball circulation system achieves even higher speeds (DN value 170,000) Increases the speed of equipment

  • Compact
  • For machine tools
  • High speed
  • Preload
  • Offset preload
  • Precision positioning (ball screw)

Screw shaft diameter (mm) : 36,40,45,50,63

Types

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Highlight feature tags

  • Compact
  • For machine tools
  • High speed
  • Preload
  • Precision positioning (ball screw)
Model BSM
  • Compact
  • For machine tools
  • High speed
  • Preload
  • Precision positioning (ball screw)

DN value : 170000
Screw shaft diameter (mm) : 40,45,50,63

BSM-B (Slim Nut Type)
  • Compact
  • For machine tools
  • High speed
  • Preload
  • Precision positioning (ball screw)

DN value : 170000
Screw shaft diameter (mm) : 36,40,45,50

Features

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High-speed performance

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Significantly improves the DN value with a newly developed circulation structure.

DN value greatly improved from 130,000 in conventional products to 170,000.
Utilizes a large lead to meet high-speed performance demands.
Maximum feed speed of 121 m/min (for the BSM4030-6)

Maximum Feed Speed
Unit: m /min
Screw shaft outer
diameter (mm)
Lead (mm)
16 20 25 30
ø 36 - 90 - -
ø 40 65 81 101 121
ø 45 58 73 90 -
ø 50 52 66 82 98
ø 63 41 - - -

Design that responds to the performance needs of machine tools

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Improves load capacity through the groove design.

The BSM improves load capacity with a unique groove design and double groove structure.

Compact with high rigidity

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Achieves higher rigidity and a more compact nut diameter than our conventional products.

The BSM-B conserves space with a slimmer nut compared to our conventional products. Rigidity was also improved by extending the overall length and increasing the number of loaded circuits.

Product Structure

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BSM Lineup

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Screw shaft
outer diameter
Lead
16 20 25 30
ø 36 - - -
ø 40 ●○ ●○ ●○
ø 45 ●○ ●○ -
ø 50 ●○ ●○ ●○
ø 63 - - -

● : BSM ○ : BSM-B (Slim Nut Type)

Detailed information for each model number

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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.

Axial Clearance

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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.