Precision machinery   Ball screws /Ball ways

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Our precision ball screws and linear motion systems enable accurate and flexible linear motion in vertical and horizontal directions with the application of ultra-precision rotation. Computerization further enhances the applications of this technology that our company has developed. It is applied in the fields that require motion control with micron-level precision such as numerical controlled machine tools, semiconductor manufacturing equipment and industrial robots, largely contributing to the development of a wide range of industrial technology and precision machining technology.
Our ball screws also have an extremely high transmission efficiency of over 90%, demonstrating their effectiveness in conjunction with transmission systems such as motors. They are effectively used in an operation control system for injection molding machines and parabolic antennas, where powerful, accurate motion is required.
Furthermore, we have been researching various materials and developed products that can withstand extreme temperature shifts. They are used in airplane flaps, which require accuracy and a high level of safety that must be ensured in severe conditions.
In addition, our products are also used in the aircraft passenger boarding bridge, PAXWAY, at airports, a control system for chemical plant piping, a control system for control rods used in nuclear power plants and a pressure tube inspection system. The accurate motion they offer is greatly trusted in various fields.

Ball screws series

Precision ball screws

Unlike the traditional slide screws, the precision ball screw uses a steel ball as an intermediary, proving high efficiency of over 90% which makes it easy to convert the linear motion to rotation.

Precision ball screw FB series

The market for feed mechanisms included in various machineries is in demand for new ball screws with improved cost performance, reliability and environmental response. Ball screws with especially high precision and cost performance are in particular demand.. In order to meet the needs of the market, , Tsubaki Nakashima has newly developed precision ball screw FB series by improving its production method and promoting its process integration.

Ball screw for heavy load HN Series

Traditionally, the hydraulic cylinder drive has been the main equipment used in heavy-load machinery. However, recent market demands for cleaner environment, more compact equipment, higher speed and improved precision have increased the electrification of the work procedures using ball screws. Tsubaki Nakashima has recently standardized its ball screws for heavy load, doubling or tripling the rated load of the existing ball screws.

Ultra-high load ball screw UHD Series

By applying the retainers that prevent the generation of mutual friction between the balls, we have successfully increased the number of balls placed within a single row. Moreover, the company’s new ball circulation method has made it possible to downsize the ball and nut system.

Precision standard ball screws

The precision standard ball screw is a precision ball screw for machine tools which we developed in response to a variety of customer needs. The lengths of the screw axis have been standardized and the products prepared for mass production in order to realize short-term delivery.

Precision miniature ball screws

Our unique steel ball circulating system has made the design of this compact product possible. It is widely used in the feed mechanisms of various instruments, such as small rotating machines, telecom equipment, varied measuring equipment, optical instruments, aviation instruments, automatic control systems, various recording instruments and autopilot equipment.

Precision rolling ball screws

With the mass production effect of rolling and the abundant stock, we can deliver the item to you immediately upon purchase. The precision of the screw is equivalent to the lead accuracy of grade C5 to C7. We also have a product types that make zero axial play possible.

Ball screws for industries in general

We mass-produce the products by rolling and stock them after applying quenching treatment to be ready for immediate delivery. The price is significantly lower than for precision products. Reasonable design, excellent processing technologies and production under consistent management systems from materials to shipping ensure safe usage at all times.

Precision ball screws with retainers

This ball screw uses retainers that do not generate mutual friction with the balls. Our product also provides you various qualities such as increase in speed, high rigidity, low noise and free maintenance fee for the long-term.

Support units for ball screws

This support unit corresponds to the precision ball screw and the precision standard ball screw. Its space-saving design makes it perfect for use in mechatronics equipment.

30 degrees trapezoid feed screws

The male screws are processed by our precision rolling machines. They command high precision, minimal abrasion and last longer. The right and the left screws are both standardized but other specialized items are also available on demand.

Precision roller screws

Precision planetary roller screws

The planetary system controls the movement and the rotation of the rollers, guaranteeing accurate motion, high acceleration, high speed and impact resistance of the roller screws even under adverse conditions such as contamination ( ice, dust or chemical substances) or rough environment, which was not possible with the existing screws.

Precision recirculating roller screws

Unlike the existing screws, the recirculating roller screws feature high capacity and excellent rigidity in small leads (1mm, etc.), perfect for use in areas where micron order control is required.

Ball ways series

Precision ball ways

This product incorporates our world-class ultra precision steel balls. We have applied NC grinding on six sides at the same time (the datum clamp face and the four-row ball groove face). The platform is extremely straight, serving to improve the precise mounting of the head article.

Precision ball way with retainers

This ball way uses retainers that prevent friction between the balls. It prevents the collision noise of the balls from occurring, diminishes the noise level, and improves the sound quality as well as the retention of the lubricant. We also provide other features such as the long-term maintenance free of charge.

Precision miniature ball ways

This ball way is the smallest of the infinite linear motion bearings among the four-directional equal capacity types. As a ball recirculating system, it has a ball return guide with a unique ball anti-falling feature. It is also made in a compact design which enables users to mount the product accurately, even on an orbiting rack.

Precision ball way modules

We applied two rows of ball rolling grooves on one side of both the orbiting rack and the slide unit. The slide unit is a very simple infinite linear motion bearing, consisting of return tubes with unique ball recirculating system and fixture tools to stabilize it.

Precision ball splines

In this product we applied a ball as the rolling element in between the external cylinder and the spline shaft, enabling the external cylinder to be moved linearly in the axial direction. Therefore the shaft torque can be transmitted to the external cylinder, and the torque of the external cylinder to the axis.

Slide ways

This product has outstanding precision and rigidity, capable of sustaining loads and moments from all directions, maintaining excellent accuracy of motion as a linear motion guide. Having minimal frictional resistance, the slide way is most perfect to be used as the component of high technology field mechatronics. Its features are also suitable for precision measuring equipment, precision machine tools and medical equipment which require high accuracy in linear movement.

Ball bushes

This highly precise bearing with smooth and endless linear motion has been realized by applying the rolling motions. It is used for linear motion in various fields such as machine tools, industrial machinery, electronic machinery, optical instruments, food machinery and a variety of measuring instruments.

Slide units

We have standardized the ball bush housings and the shaft supporters combined with the ball bushes and the slide shafts to create linear motions. These products have been designed to maximize the characteristics of the ball bushes, showing full effect both in gap-adjustment types and open types of ball bushes.

Slide shafts

These shafts can be used for guiding the ball bush bearings and other components to create highly accurate linear movements without complication. When combined with the ball bush, the quality and the precision of the shaft has direct effect on the features of the ball bush, as the shaft itself serves as the ball bush’s inner ring. The slide shafts have been produced valuing this issue, and maintains stable functions under any condition of use.