R4 Series

The R4 Series is our most powerful rodless actuators system, built for the heaviest loads, high acceleration and maximum duty cycle. The robust design incorporates an internal linear motion guide rail with a built-in flexible seal to ensure reliable operation in industrial environments. Belt-drive models offer the most rapid moves while screw drives offer the highest thrust capacity and repeatability.

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Companion Products

  • AKD

    We designed our next-generation AKD® Series with the versatility, communications, power an... Learn More >>

  • P7000 Series
    P7000 Series

    Kollmorgen's P7000 stepper drives provide you servo-like system performance with the cost ... Learn More >>

  • AKM Series
    AKM Series

    Our best-in-class, high-performance servomotors offer a wide range of mounting, connectivi... Learn More >>


Motors available for use with the R4 Series include:


  • KollmorgenT32T and T41T Series hybrid stepper motors (P7000 drive recommended)
  • Kollmorgen AKM42E, 42G, 52G, and 52H Series AKM™ brushless servo motors
  • NEMA 34and 42 custom motor mounts



  • Max length: 2,743 mm (108 in)
  • Max thrust: 3,114 N (700 lbf), screw models
  • Max speed: 3,000 mm/s (120 in/s), belt models
  • Ball screw or timing belt drives
  • Stepper, brushless servo and custom motor options
  • Internal bearings: recirculating on a precision ground rail
  • Bearing housing: 6063-T6 aluminum, hard-anodized
  • Carriage assembly: 6063-T6 aluminum, hard-anodized
  • Guide housing: 6063-T6 aluminum, hard-anodized
  • Helical gearing: alloy steel, case-hardened
  • Ball screw: 1.0" diameter hardened alloy steel screw; alloy steel, heat-treated ball nut
  • Belt drive: 1.5" wide L pitch urethane with steel reinforcement cords
  • Flexible seal: stainless steel band, elastomeric seal



  • Standard or custom lengths to 0.1 inches
  • English or metric carriage mount
  • Motor or screw brakes
  • Right/left side lube port
  • Magnetic home and limit sensors
  • Single or dual carriages
  • Belt or helical gear, parallel or inline direct transmission
  • Water resistance protection
  • Right/left breather vent/tubing



Ball Screw 

Belt Drive

Max. Stroke Length, mm (in)

2740 (108)

Profile, mm (in)

91 x 108 (3.6 x 4.25)

Guide Type

Profile Rail

Screw Leads (in/rev)

1, 0.25


Screw Diameter (in/rev)




20 mm rail, 2 bearing block


Travel life standard: 25.4 km (1,000,000 in)

Max. Thrust Force, N (lbf)

3100 (700)

1300 (300)

Max. Velocity, mm/s (in/s)

1000 (40)

3000 (120)

Max. Carriage Load:


     Normal, N (lb)

1300 (300)

     Roll Moment, N-m (lb-in)

67.8 (600)

     Pitch Moment, N-m (lb-in)

113 (1000)

Repeatability, mm (in)

+/-0.025 (0.001)

+/-0.25 (0.010)

Max Duty Cycle (%)



Limit Sensors



Std. Operating Temp Range, °C (°F)

-28 to +60 (-20 to +140)


IP 44 rated: Splash-proof, protected against ingress solid particles greater than 0.040 [1 mm] diameter.



R Series_User Manual_en-US_rev1R Series_User Manual_en-US_rev11.3 MB8/14/2013Email

3D Models and Outline/Dimension Drawings

 R4 Series R4 Series Email

3D Interactive Models

R4 Series 3D Interactive ModelsR4 Series 3D Interactive Models75.1 KB8/14/2013Email
US Production