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Reliance Precision Mechatronics

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The
RacktuatorTM

Fast Efficient
Linear Rack Actuators

Rack Actuator - Racktuator
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Rack Actuators Come With The Following Motor Types

Intelligent Motors

Rack actuators with Cool Muscle Motors give you everything you need in one high-density package to provide intelligent linear motion control.

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Stepper Motors

Rack actuators with standard stepper motors offer very simple linear motion in an economical package.

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Rack Actuator Range

Size 17 Tubular Rack

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Size 17 Solid Rack

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Size 23 Solid Rack

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Complete Catalogue

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Rack Actuator Features

Simple and Compact

Available with both solid and tubular racks, rack actuators provide a simple, compact way of transferring rotary motion into linear motion. A trusted and proven rack and pinion system provides fast, accurate, predictable motion.

Full Closed Loop System

Coupled with a Reliance Cool Muscle motor, rack actuators can use the integrated controller and high resolution magnetic encoder to provide a full closed loop position system. For more information see the Reliance Cool Muscle.

Closed Loop System

High Load - Long Life

All Reliance rack actuators have been fully tested to provide a minimum of 5 million cycles operation. Axial loads up to 90N continuous and 150N momentary are available on the size 23. Other axial loads available on different sizes are as follows:

Size 17 tubular rack actuator (PEEKTM pinion) 3N Axial, 12N Momentary

Size 17 tubular rack actuator (316 stainless steel pinion) 15N Axial, 25N Momentary

Size 17 solid rack actuator (304 stainless steel pinion) 25N Axial, 50N Momentary

Size 23 solid rack actuator (17-4PH stainless steel pinion) 19N Axial, 150N Momentary

High Load - Long Life

All Reliance rack actuators have been fully tested to provide a minimum of 5 million cycles operation. Axial loads up to 90N continuous and 150N momentary are available on the size 23. Other axial loads available on different sizes are as follows:

Size 17 tubular rack actuator (PEEKTM pinion) 3N Axial, 12N Momentary

Size 17 tubular rack actuator (316 stainless steel pinion) 15N Axial, 25N Momentary

Size 17 solid rack actuator (304 stainless steel pinion) 25N Axial, 50N Momentary

Size 23 solid rack actuator (17-4PH stainless steel pinion) 19N Axial, 150N Momentary

Lubrication Free

Size 17 tubular rack actuators are available with a lubrication free PEEKTM pinion, ideal for applications where lubricant contamination needs to be avoided.

High Resolution

Coupled to a Reliance Cool Muscle Motor set to 50,000 steps per revolution, position resolutions of 0.00075 are possible.

Size 17 tubular rack actuator P/No: RCMRA17 0.00085mm/step

Size 17 solid rack actuator P/No: RCMRAK17 0.00075mm/step

Size 23 solid rack actuator P/No: RCMRA23 0.00080mm/step

High Speed

Linear rack speeds of up to 500mm/sec are possible.

Size 17 tubular rack actuator: 300mm/sec

Size 17 solid rack actuator: 500mm/sec

Size 23 solid rack actuator: 300mm/sec

Advanced Motion Network

Using the Reliance RacktuatorTM coupled to the Reliance Cool Muscle motors, multiple units can work in sequence either to produce circles, ellipses or complex arc motions in a daisy chain network such as 'pick and place' machines. The RacktuatorTM can be operated safely entirely on its own, or communicate via RS232, RS484, Ethernet or Profibus, driving from its own memory banks or dynamically from a PC or HMI.

For simpler applications the RacktuatorTM is easily integrated with a standard stepper motor drive being driven either step and direct or with CW/CCW pulses.

Suitable Applications

Reliance Racktuators are a simple, cost effective method of providing linear motion in many different applications.

These range from scientific research, medical pick and place, semi-conductor positioning, food preparation and packaging to simple domestic installations.

Examples include:

  • Multiple head medical pipetting machines.
  • Semi-conductor pick and place and testing equipment.
  • Animatronics.
  • Print head positioning.
  • Switch testing.