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

Types
Highlight feature tags
- Compact
- For machine tools
- High speed
- Preload
- Precision positioning (ball screw)

- Compact
- For machine tools
- High speed
- Preload
- Precision positioning (ball screw)
DN value : 170000
Screw shaft diameter (mm) :
40,45,50,63

- Compact
- For machine tools
- High speed
- Preload
- Precision positioning (ball screw)
DN value : 170000
Screw shaft diameter (mm) :
36,40,45,50
Features
High-speed performance
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)
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
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
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

BSM Lineup
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
Dimensional drawing/Dimensional table
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- 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. |
Axial Clearance
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. |