Skip to main content
POWERPAC K & N

POWERPAC® K and N Series Stepper Motors

POWERPAC® hybrid stepper motors deliver more power in a smaller package. These rugged NEMA 34 and 42 (90 and 110 mm) motors combine optimal magnetics in a housingless frame with a large diameter rotor and innovative rotor-stator design to produce more torque and smoother microstepping. The K Series incorporates flux-focusing SIGMAX® technology for higher acceleration with 25 percent more torque.

Get a Quote Selection Guide

Global
Product available worldwide

Features

  • Wide range of standard options
  • Affordable co-engineered modifications with a short lead time to meet unique application requirements
  • N3 models, NEMA 34 (90 mm) motors are available in 4 stack lengths with torque ratings from 3.2 to 15.4 N-m (454 to 2,180 oz-in) nominal holding torque.
  • K3 models, NEMA 34 (90 mm) motors are available in 4 stack lengths with torque ratings from 4.08 to 19.7 N-m (578 to 2,790 oz-in) nominal holding torque.
  • N4 models, NEMA 42 (110 mm) motors are available in 3 stack lengths with torque ratings from 8.12 to 30.8 N-m (1,150 to 4,365 oz-in) nominal holding torque.
  • K4 models, NEMA 42 (110 mm) motors are available in 3 stack lengths with torque ratings from 10.4 to 40.3 N-m (1,470 to 5,700 oz-in) nominal holding torque.
  • Extensive selection of shaft configurations, terminations, windings and co-engineered modifications to suit your application needs, time frame and budget
  • Speeds up to 3,000 rpm meet the velocity demands of most high-torque applications
  • Improved torque linearity (above rated current) provides high peak torque to boost acceleration in intermittent-duty applications
  • High torque at moderate speeds to enable a cost-effective alternative to servo motors
  • Low detent torque harmonic provides smoother microstepping performance
  • K Series incorporates SIGMAX® technology for 25% more torque than N Series
  • Runs cooler than comparable steppers to provide longer, more reliable motor life
  • Special rotor design enables high acceleration
  • Rugged, “housingless” square frame means more torque in a smaller package
  • IP65 sealing for splashproof protection
  • Two-phase design is compatible with most drives and provides smoother microstepping and lower power input versus three-phase motors
  • Optional encoder mounting provisions

Media & Downloads

Title Language Date Share URL
Kollmorgen Full-line Catalog English Share URLview
Kollmorgen Stepper Motor Selection Guide English Share URLview
POWERPAC® K/N Series Stepper Motor Selection Guide English Share URLview

These files cover the standard product family line. For environmental declarations for custom products, i.e. part numbers containing “S” or “X”, visit our Environmental Compliance search.

Title File Language Date Share URL
CE Technical Notice - Servo and Stepper Motors Efficiency English
Share URL /sites/default/files/public_downloads/Kollmorgen%20CE%20Technical%20Notice%20-%20Servo%20and%20Stepper%20Motors%20Efficiency.pdf
CEL China Efficiency Labelling for Servo and Stepper Motors English
Share URL /sites/default/files/public_downloads/CEL%20Technical%20Notice%20on%20Efficiency%20for%20Servo%20and%20Stepper%20Motors.pdf
China Compulsory Product Certification (CCC Technical Notice) English
Share URL /sites/default/files/2024-01/CCC%20Technical%20Notice%20on%20Scope%20of%20Kollmorgen%20Products.pdf
EU Declaration of Conformity PowerPac K-N-SN English
Share URL /sites/default/files/public_downloads/Kollmorgen%20EU%20Declaration%20of%20Conformity%20PowerPac%20K-N-SN.pdf
UL Declaration of Conformity PowerPac K-N-SN English
Share URL /sites/default/files/2024-10/UL_Declaration_of_Conformity_PowerPac_K-N-SN.pdf

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.

Title File Language Date Share URL
2D/3D Product Model English
Share URL https://www.kollmorgen.com/en-us/service-and-support/technical/3d-models

Kollmorgen Stepper Motor Technology Greatly Simplifies Machine Design

Kollmorgen Stepper Motor Technology Greatly Simplifies Machine DesignTechnology Brief - Q & A - If extensive wiring in your application is proving to be a difficult issue, then stepper motors are the best choice as they require significantly less wiring then a typical servo motor.
Learn More

Engineer the Exceptional

Learn how to engineer exceptional machines, robots and vehicles with the highest-performing, most reliable motors, drives, automation solutions and more.

Learn More