Precision Rotary Ball Screw Rotary nut Model DIR Model DIR
Standard-Lead Rotary-Nut Ball Screw model DIR is a rotary-nut Ball Screw that has a structure where a simple-nut Ball Screw is integrated with a support bearing.
Its ball screw nut serves as a ball recirculation structure using deflectors. Balls travel along the groove of the defl ector mounted in the ball screw nut to the adjacent raceway, and then circulate back to the loaded area to complete an infinite rolling motion.
DN value : 70000
Screwshaftdiameter(mm) :
16,20,25,32,36,40
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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
Contamination Protection
- Contamination Protection Seal for Ball Screws Labyrinth seal
- Contamination Protection Seal for Ball Screws Brush seal
- Wiper Ring
- Canvas seal
- Thin Film Seal
- Dust Cover for Ball Screws
Lubrication
- QZ Lubricator
Rustprevention
- Surface Treatment
Other
- Dimensions of Each Model with an Option Attached
- Additional Machining for Shaft Ends
Display result
- Detailed information
- Dimensional drawing/Dimensional table
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Detailed information
Dimensional drawing/Dimensional table
Notes on dimensional table
- Note) The rigidity values in the table represent spring constants, each obtained from the load and the elastic deformation when providing a preload equal to 10% of the basic axial dynamic load rating (Ca) and applying an axial load three times greater than the pre-load.
These values do not include the rigidity of the components related to mounting the ball screw nut. Therefore, it is normally appropriate to regard roughly 80% of the value in the table as the actual value.
If the applied preload (Fa0) is not 0.1 Ca, the rigidity value (KN) is obtained fromthe following equation.
Model number coding
(*1) See Seal symbol
(*2) See Axial Clearance
(*3) See Accuracy of the Ball Screw
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. |
Optional
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You can download 2D/3D CAD by clicking on the icon and selecting from the CAD format.
| Model No. | Designer* | Life Calculator* | CAD Download* |
Catalog Download |
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| DIR 1605-6 |
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| DIR 2005-6 |
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| DIR 2505-6 |
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| DIR 2510-4 |
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| DIR 3205-6 |
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| DIR 3206-6 |
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| DIR 3210-6 |
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| DIR 3610-6 |
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| DIR 4010-6 |
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| DIR 4012-6 |
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