The Nippon Bearing stroke bush is a linear and rotational motion mechanism utilizing the rotational motion of ball elements between an outer cylinder and a shaft.

It is compact and can withstand high loading.

Smooth motion is achieved under high-speed and high-acceleration conditions.

Although the linear motion is limited to a specific stroke length, the combined rotation and stroke motion is achieved with very little frictional resistance. The NB stroke bush can be conventiently used in a variety of applications.

Advanteges:

High precision

High-carbon chromium bearing steel is used for the outer cylinder. It is heat treated and ground to achieve high rigidity and accuracy.

Ease of mounting and replacement

The highly accurate fabrication of the NB stroke bush results in uniform dimensions, facilitation parts replacement and housing fabricaton.

Light weight and space saving

The use of an aluminum alloy for the retainer and the thin-wall outer cylinder makes the NB stroke bush light weight and compact.

Lubrication

One lubrication hole is provided on each oil groove of the outer cylinder, making it easy to lubricate the SR stroke bush.

Types:

Type	Discription	Picture
SR	normal without seals
SR-UU	normal with seals on both sides
SR-B	double retainer type without seals
SR-BUU	double retainer type with seals on both sides