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Electric Cylinders - EC4 Large

EC4 Series

The EC4 Series provides robust electric cylinders for heavy-duty thrust loads. Precision-rolled ball screw types yield quiet operation, low backlash and high accuracy, with a selection of motor-to-screw reduction types. Exceptionally durable bearing and drive housings are available with optional environmental features to resist moisture and contaminants. The special design of these cylinders minimizes the need for routine maintenance.

Limited availability outside North America


Motors available for use with the EC4 Series include:

  • KollmorgenT32T/V Series hybrid stepper motor
  • Kollmorgen AKM42E, 42G, 52G, 52L and 52H Series AKM™ brushless servo motors
  • NEMA 34 and 42custom motor mounts


  • Max stroke length: 1,500 mm (59 in)
  • Max thrust: 12,000 N (2,700 lbf)
  • Ball screw driven with 10, 25 mm leads
  • Stepper, brushless servo and custom motor options
  • Bearing/drive housing: 6063-T6 aluminum, anodized
  • Mounting plates: 6061-T6 aluminum, cast aluminum plate, anodized
  • Thrust bearings: angular contact, high thrust ball bearings
  • Belt/pulley: AT-5, polyurethane with steel tensile cords
  • Guide cylinder: 6063-T6 aluminum, hard-anodized
  • Thrust tube: 300 series stainless steel, 1/4 hard and ground
  • Ball screw and nut: heat-treated carbon steel alloy
  • Helical gearing: alloy steel, case-hardened


  • Standard or custom lengths to 1 mm
  • Motor or screw brakes
  • Threaded, spherical or clevis rod ends
  • Environmental protective boot
  • Timing belt, helical gear and inline direct transmission
  • Flange, clevis, side and trunnion cylinder mounting types
  • Magnetic home and limit sensors
  • Linear potentiometer output


Max. Stroke Length, mm (in) 1500 (59.06)
Screw Lead, mm 25, 10
Screw Diameter, mm 25
Unit Backlash, mm (in) 0.30 (0.12)
Dimensional Standard Metric ISO6431 Std.
Bore Size, mm 80
Motor Mount parallel or inline
PERFORMANCE SPECIFICATIONS Travel life standards of 25.4 km (1,000,000 in)
Max. Thrust Force, N (lbf) 12,000 (2700)
Max. Velocity, m/s (in/s) 1.33 (52.5)
Max. Rated Duty Cycle 100
Std. Operating Temp Range, °C (°F) -30 to +70 (-22 to +158)
Environment IP54 Std. IP65 Opt.

Media & Downloads

Title File Language Date Share URL
EC Series User's Manual English
Share URL /sites/default/files/public_downloads/EC_Series_Users_Manual_en-US_rev1.pdf
EC Series Position Sensor Data Sheet (EC, N2, NV) English
Share URL /sites/default/files/public_downloads/Position_Sensors_EC_N2_NV%28REVC%29.pdf
Title Language Date Share URL
Kollmorgen Catalogo Automazione e Motion Control IT Italian Share URLview
Electric Cylinder Selection Guide English Share URLview
Kollmorgen Electric Cylinder Selection Guide English Share URLview
Kollmorgen Full-line Catalog English Share URLview
Kollmorgen otomasyon ve hareket kontrol çözümleri kataloğu TR Turkish Share URLview
科尔摩根直线定位器(电动缸)产品手册 Chinese, Simplified Share URLview
科尔摩根运动控制及伺服系统解决方案 Chinese, Simplified Share URLview

These 3D models are intended to guide your design activities and may be used as reference information. Be sure to consult a Kollmorgen expert to ensure you have the most current and accurate information for critical aspects of design work.

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