General manufacturer of Ball screws & Actuators

Precision Ball Screws

Since KSS started production and sales of Ball Screw in 1978, we have been working on product development as a pioneer of Miniature Ball Screws. In addition, we developed Unit Products related Ball Screw. here are 2 types of KSS Precision Ball Screws, one of which is Standard Products in stock for short delivery, the other is Customized Products with flexible design.

  • Product outline
  • Technical description PDF
Precision Ball Screws

Standard Products

To meet customer's request of quick delivery, KSS has specified model type in stock. The end-journal configuration is standardized and is possible to reduce numbers of design process by customer.

*SG series

precision ball screw SG series

Precision Ball Screws which are accuracy C3, C5 and have machined Shaft end at fixed side in advance are available. Short delivery is available by machining supported end in accordance with customer’s request.

  • Series list
  • Catalogue PDF

*SD series

presicion ball screw SD series

SD series are economical Ball Screws which moves bi-directionally with one Shaft, and perform centering, precise positioning. There are Precision Ball Screws C3, C5 grade.

  • Series list
  • Catalogue PDF

Customized Products

In order to meet the needs of customer's requested design, we offer customized products.
To reduce design process at customer, each Nut type is standardized.

*Single Nut with Flange

precision ball screw Single Nut with Flange

It is most simple Single Nut type. Normally Ball Screws are used with small Axial play, but using oversized Balls allows for the application of light preloading and eliminates backlash (only Precision grade). Nut should be mounted using bolt holes in Flange. FBS (Return-plate), FKB (Internal-deflector), FDB (End-deflector), FEB (End-cap) circulation system can be distinguished.

  • Series list
  • Catalogue PDF

*Sleeve type Single Nut

precision ball screw Sleeve type Single Nut

It is Cylindrical Single Nut which is compact. Alike Single Nut with Flange, Axial play can be eliminated (only Precision grade). The Nut should be mounted by clamping on the keyway on the Nut outer and Nut end surface.

  • Series list
  • Catalogue PDF

*Single Nut with M-thread

precision ball screw Single Nut with M-thread

The Cylindrical type with M-thread at the Nut end. The Nut should be mounted using M-thread. It is suitable for mounting with cylinder.

  • Series list
  • Catalogue PDF

*Square type Single Nut

precision ball screw Square type Single Nut

The square Nut is finished with a large mounting face parallel to the Nut center. Nut itself has Housing function. This allows for a more compact design compared to Flange type.

  • Series list
  • Catalogue PDF

*Double Nut with Flange

precision ball screw Double Nut with Flange

A Spacer is inserted between the two Nuts to eliminate Axial play. Preloading can also be applied to increase Nut Rigidity. The Nut should be mounted using bolt hole in Flange.

  • Series list
  • Catalogue PDF

*Sleeve type Double Nut

precision ball screw Sleeve type Double Nut

This uses two Cylindrical Nuts with a Spacer inserted between them to apply Preload. The Nut should be mounted by clamping on the Keyway on the Nut outer and Nut end surface.

  • Series list
  • Catalogue PDF

*Bi-directional Nut with Flange

precision ball screw Bi-directional Nut with Flange

Since there are both Right-handed thread and Left-handed thread on a Shaft, it has Bi-directional function. Single Nut with Flange type is standardized, but it is also possible to manufacture Sleeve type Nut. In addition, absolute position control for both Nuts is available.

  • Series list
  • Catalogue PDF

Please ask KSS about the Nut profile and dimension other than the above.

Inquiry or Request

Inquiries/Contact us

KSS Co.,Ltd.
1-22-14 Yaguchi, Ohta-ku, Tokyo 146-0093, Japan
Tel: +81-3-3756-3921
Contact us