Roh'lix linear actuators from Zero-Max convert rotary motion to linear travel and carry loads at speeds up to 180cm/s depending on size. They are for positioning operations in all types of machinery and are cheaper than ball screws. Designed to handle thrust between 2 and 90kg, loads can be attached to the carrier block using two cap screws.

 

The thrust capacity is adjustable so the system will disengage if the preset thrust is exceeded, providing overload protection if an obstruction is encountered in the system.

The actuators consist of three precision ball bearings (which are replaceable) at each end of a two-piece aluminium carrier block.

Mounted at an angle to the drive axis, the six bearings convert drive shaft rotation into proportional linear travel.

With a minimum of 90% efficiency, an actuator can normally provide up to 250 million centimetres of linear travel.

The moveable carrier block travels on a smooth, threadless hardened RC58 shaft that requires no lubrication.

Besides being easy to install, the actuator is compact and requires little maintenance.

Applications include pick and place, packaging machines, sprayers, back gauges, door openers, transfer table and positioners for stretch wrap packaging systems, screen printers and other machines.

Five standard sizes are available from 8 to 50mm diameter shafts.

Also available are quick disconnect models that disengage the block from the shaft, allowing switchover of equipment from automatic to manual operation and back again.

Sizes are from 8 to 20mm diameter shafts.

Shafts are not included in either model.