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MRA-RTU-3

The MRA-RTU-3 is a heavy-duty linear actuator designed for long-axis motion in industrial robotic and automation applications. Utilizing a rack-and-pinion drive with dual guide rails, it delivers stable, repeatable performance across extended travel distances. Its rugged steel and aluminum construction supports high payload capacities, while optional mounting configurations allow for seamless motor integration. Built for continuous operation, the MRA-RTU-3 offers consistent reliability in high-load, high-cycle environments.

  • Reliable 7th axis motion for articulated robots.
  • HD Steel Cart designed for the exact make and model of robot used.
  • User defined Strokes.
  • Dual HD Belt Design.
  • Floor Mount Only.
  • Extruded aluminum actuator body with T-slots for ease of mounting.
  • Easy to adjust belt tensioner.
  • One piece machined and stress proof shafted pulley.
  • Zero backlash belt to pulley design.
  • Corrosion resistant components.
  • Washdown Duty or Water- Resistant Options upon request.
  • Integrated cable management.
  • Suggested for use with the following Robots:
    • Yaskawa PL190
    • Fanuc M410 series
    • Kuka KR40
Datasheet - MRA-RTU-3
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Product Notes

Each RTU can be supplied with T-slot sensors, gearboxes, or motor mounting adaptors upon request. For travel requirements that exceed standard values, contact Macron Dynamics for assistance.

Specifications

These are standard specifications, if you need a custom configuration, please use our custom configuration request form.

Specifications
Motion Horizontal
Max Speed - Horizontal - mm/sec 3000
Max Load - Horizontal - lbs 3000
Repeatability - mm +/- 0.039
Moment Load - in-lbs[Nm] 8800[995]
Positional Accuracy - mm/meter +/- 0.0625
Acceleration Max - Gs 1
Recommended Belt Running Load - lbf[N] 2000[8896]
Cart Guide Linear bearing with profile rail
Weight
System Weight - kg See Data Sheet
Motor Sizing Information
Weight of Cart - lbs[kgs] See Data Sheet[See Data Sheet]
Weight of Belt - kgs based on travel selected See Data Sheet
Travel per Revolution - mm See Data Sheet
Pulley Pitch Diameter - mm See Data Sheet
Pulley Material / Width - mm See Data Sheet
Breakaway Torque - oz-in 32-35
Coefficient of Friction 0.2
Rolling Resistance - lbs / kgs N/A
Travels (25mm increment)
Standard Travels - min to max 150 to 10000

Configure a Standard Model MRA-RTU-3

Enter your configuration options to submit a Request for a Quote or a CAD drawing:

Shaft Type

Drive Shaft Location

Normal Drive shaft diagram

Travels (in 25mm increments)

Please Give Me Options For:

T-Slot Sensor Kits
Transistor Logic
Switching Configuration
Cord Extension Length

Part Number As Configured

MRA-RTU-3-x0x-x

Gearbox: None
Motor Mount: None
T-Slot Sensor: None

User Guides

Gearbox Installation graphic
Gearbox Install

Download

User Guide Maintenance

Download

EDC PDF Thumbnail
EDC Distance Coupling Installation

Download

Videos

Accessories

Item # 397, Torque Wrench 25-250 lbs-in

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Discuss Your Custom Application with One of Our Owners & Engineers

Macron Dynamics specializes in designing and building virtually any configuration to meet your unique automation needs. Our innovative solutions enhance efficiency, optimize workspace utilization, and prioritize worker safety—reducing injuries while maximizing productivity.

We offer custom solutions for applications requiring from one to thousands of units, and units physically much smaller and larger than our standard models.

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