Full-Ball Type Rolled Ball Screw
THK rolled ball screws are low-priced feed screws that use a screw shaft both rolled with high accuracy and specially surface-ground, instead of a thread-ground shaft used in the precision ball screws.
In addition, a wide array of types are offered as standard in order to allow optimal products to be selected according to the application.
Types
Highlight feature tags
- Compact
- Miniature
- High speed
- Super lead
- Large lead
- Preload
- No preload
- Constant-pressure preload
- Return-pipe type
- End-cap type
- Deflector type
- Slim nut
- Square nut
- Transport (ball screw)
- Transport (ball screw)
- Preload
- Constant-pressure preload
- Compact
- Deflector type
- Slim nut
Screw shaft diameter (mm) : 14,16,20,25,28,32,36,40
- Transport (ball screw)
- No preload
- High speed
- Return-pipe type
Screw shaft diameter (mm) : 10,12,14,16,18,20,25,28,32,36,40,45,50
- Transport (ball screw)
- Super lead
- No preload
- End-cap type
Screw shaft diameter (mm) : 15,20,25,30,40,50
- Transport (ball screw)
- Super lead
- No preload
- End-cap type
Screw shaft diameter (mm) : 15,20,25,30
- Transport (ball screw)
- No preload
- Return-pipe type
- Square nut
Screw shaft diameter (mm) : 14,16,18,20,25,28,32,36,45
- Transport (ball screw)
- No preload
- Compact
- Miniature
Screw shaft diameter (mm) : 06,08,10,12,14
- Transport (ball screw)
- Large lead
- No preload
- End-cap type
Screw shaft diameter (mm) : 08,10,15,16,20,25,32,36,40,50
Features
Structure and Features
THK Rolled Ball Screws are low priced feed screws that use a screw shaft rolled with high accuracy and specially surface-ground, instead of a thread-ground shaft used in the Precision Ball Screws.
In addition, a wide array of types are offered as standard in order to allow optimal products to be selected according to the application.
Achieves Lead Angle Accuracy of Class C7
Screw shafts with travel distance error of classes C7 and C8 are also manufactured as standard in addition to class C10 to meet a broad range of applications.
| Travel Distance Error | C7 | : ±0.05/300 (mm) |
| C8 | : ±0.10/300 (mm) | |
| C10 | : ±0.21/300 (mm) |
(For maximum manufacturing length of screw shaft by accuracy grade, seeAssuming the Shaft Lengthfor more information.)
Low Price
The screw shaft is induction-hardened or carburized after being rolled, and its surface is then specially ground. This allows the rolled ball screw to be priced lower than the precision ball screw with a ground thread.
High Contamination Protection
The ball screw nut is available with a compact labyrinth seal or a brush seal. This achieves low friction, high contamination protection, and a longer service life of the ball screw.
