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Ball Screw

The Ball Screw is a high-efficiency feed screw with the ball making a rolling motion between the screw axis and the nut. Compared with a conventional sliding screw, this product has drive torque of one-third or less, making it most suitable for saving drive motor power.

Technical Support 

Ball Screw


DIN Standard Compliant Ball Screw

EBA

In the DIN standard compliant Ball Screw, balls under a load roll in the raceway cut between the screw shaft and the nut while receiving the axial load, travel along the groove of a deflector embedded inside the nut to the adjacent raceway, and then circulate back to the loaded area. Thus, the balls perform infinite rolling motion. Two types of nuts are available: model EB of over-ball preloaded type or non-preloaded type, and model EP of offset preloaded type.

Technical Descriptions (PDF 1,488KB)
Specifications (PDF 349KB)


Precision, Caged Ball Screw

Precision, Caged Ball Screw

A Ball Screw that achieves low noise, small torque fluctuations and long-term maintenance-free operation by using a ball cage.


Finished Shaft Ends Model BNK

BNK

Finished Shaft Ends Model BNK


Precision Ball Screw

Precision Ball Screw

A Ball Screw using a screw shaft ground to high accuracy.


Precision Ball Screw / Spline

Precision Ball Screw / Spline

A Stroke/Rotary unit that has Ball Screw grooves and a Ball Spline groove crossing one another on a single shaft. The nuts of the Ball Screw and the Ball Spline have dedicated support bearings directly embedded on the circumference of the nuts.


Rolled Ball Screw

Rolled Ball Screw

A Ball Screw using a screw shaft roll-formed to high accuracy.


Support Unit

upport Unit

The Support Unit comes in six types: models EK, FK, EF, and FF, which are standardised for standard Ball Screw assembly provided with finished shaft ends, and models BK and BF, which are standardised for ball screws in general. The Support Unit on the fixed side contains a JIS Class 5-compliant angular bearing provided with an adjusted preload.


Nut Bracket

Nut Bracket

The nut bracket is standardized for standard Ball Screw assembly provided with finished shaft ends. This model is designed to be secured directly on the table using bolts. Since the height is low, it can be mounted on the table only using bolts.


Lock Nut

Lock Nut

The Lock Nut for Ball Screws is capable of easily fastening the screw shaft and the bearing with high accuracy. A loosening prevention mechanism comprising a hexagonal socket-head setscrew and a set piece prevents the Lock Nut from loosening and ensures firm fastening.