Actuator protects surrounding environment

Linear actuator for use in clean room, biomedical and containment environments consists of a linear motion guide and miniature ballscrew, and combines rigidity, accuracy and reliability.

THK has launched a linear actuator for use in clean room, biomedical and containment environments.

Called the CKR, the actuator consists of a linear motion guide and miniature ballscrew, and combines rigidity, accuracy and reliability in a compact, virtually zero maintenance unit.

The CKR is a fully sealed unit, with the exception of extraction points that allow a vacuum line to be attached.

This lets a complete or partial vacuum be created within the body of the actuator, so dust or particles of lubricating grease generated by the motion of the guide and ballscrew can easily be removed to protect the surrounding environment.

This seal structure means it can meet Class 4 (ISO 14644-1:1999) clean room compatibility.

It is supplied as standard with AP-C coating that has low levels of particle emissions and resists corrosion.

Both the linear motion rail and ballscrew are treated with the coating.

The U-shaped outer rail houses the inner block and the ballscrew.

This construction is tough and rigid and enables, for example, components or loads to be moved and placed at high speeds to within +/-0.003mm repeatability, with the option to preload the device if required.

The load-bearing ball races on the guide are arranged so that the capacity is uniform in four directions (radial, reverse-radial and lateral).

As a result, the actuator can be used in any mounting orientation and for applications where the applied load extends beyond the body of the actuator.

This makes it suitable for use where the loading direction varies.

The CKR is available in a choice of lengths and with a range of options.

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