NB slide screw


  • High machine efficiency
  • No lubrication required
  • Excessive load prevention mechanism
  • Suitable for long-stroke applications using a standard linear shaft

The NB slide screw converts rotational motion into linear motion by utilizing the friction between radial ball bearings and a shaft. This simple mechanism eases maintenance and installation work. The slide screw is most commonly used as transport devices in many types of machines, and is not intended for accurate positioning requirements.


The NB slide screw consists of two aluminum blocks, each with three radial bearings with a fixed angle between them. A round shaft is inserted between the two blocks, and its rotation produces linear motion determined by the contact angle between the shaft and the bearings. For variable loads, the thrust is adjusted by turning the spring loaded thrust adjustment bolts.

The bearings are pre-lubricated with grease prior to shipment, so there is no need to apply lubrication other than to the drive shaft to prevent corrosion.

NB can fabricate slide screws to meet special requirements, including screws with a special lead or a reverse lead. Contact NB for further  information.

Available size:

For 6 mm - 30 mm shafts


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