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POWERMAX II® M and P series

Ideally suited for lower loads, the POWERMAX II® M and P Series is designed to provide exceptional value, versatility and ease of use. Among the most powerful stepper motors available, they deliver high torque in a compact package and are available in a wide range of frame sizes, constructions, and optional modifications. POWERMAX II has an extremely competitive market lead time and is backed by UL and CE certifications.

Product available worldwide
POWERMAX II® M and P series

Features & Benefits


  • P2 models: NEMA 23 (60 mm) motors available in 3 stack lengths with torque ratings from 0.30 to 1.51 N-m (42 to 214 oz-in) nominal holding torque
  • M2 models: NEMA 23 (60 mm) motors available in 2 stack lengths with torque ratings from 0.67 to 1.79 N-m (95 to 253 oz-in) nominal holding torque
  • Available with affordable co-engineered modifications to suit your application needs, time frame and budget
  • Numerous standard modifications and customer-specified options
  • Speeds up to 3,000 rpm meet the velocity demands of most high-torque applications
  • Oversized 30 mm bearings increase bearing and motor life
  • Complete subassemblies available
  • UL, CE, RoHS and REACH certifications


  • Broad product line with flexible modifications and rapid prototyping for exceptional design flexibility
  • Quality construction for reliability and long service life
  • Designed for quick, easy integration into new and existing applications
  • Global supply footprint with localized support
  • Competitive pricing and lead times


Motor Model Motor Length mm(in) Max Holding Torque N-m(oz-in) Inertia kg-m2(oz-in-s2) Weight kg(lb)
P2H 40.6 (1.60) 0.43 (61) 0.00000706 (0.0010) 0.45 (1.0)
P21 52.3 (2.06) 0.80 (114) 0.00001200 (0.0017) 0.68 (1.5)
P22 78.7 (3.10) 1.51 (214) 0.00002542 (0.0036) 1.13 (2.5)
M21 52.3 (2.06) 1.01 (144) 0.00001200 (0.0017) 0.68 (1.5)
M22 78.7 (3.10) 1.78 (253) 0.00002542 (0.0036) 1.13 (2.5)

Modification Is Our Standard

  • Shaft modifications including:
    • Special diameters and lengths
    • Special details including flats, dual flats, slots and thru holes
    • Spline shafts, helical gears, fixed acme lead screws
  • Special windings to accommodate current, resistance or inductance requirements
  • Customer-specified cable options, lead colors, lead lengths and connectors
  • Customer-specified, factory-mounted encoders, including a choice of encoder types and line counts
  • Complete subassemblies shipped directly from the factory to simplify engineering and integration

Kollmorgen can evaluate further customization as needed. Contact our Customer Support team with your specific requirements.

Contact a Motion Expert

We Can Also Fully Customize

Don’t see what you need? We’ll work with you to customize a perfect fit for your application, with rapid prototyping and ramp-up to full-rate production. Get in touch and let us know what you are looking for.


Design Tools

Title Language(s) Date Size
pdfNema P2 Stepper System TB English 167.61 KB Copy URL
Title Language(s) Date Size
Kollmorgen Automation and Motion Control English 14 Jun 2021 15.53 MB Copy URL
Kollmorgen Optimized Solutions and Special Duty Motors English 01 Jan 2018 1.26 MB Copy URL
Stepper and Synchronous Motors Catalog EN Rev C English 19 Feb 2014 7.96 MB Copy URL

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 Language(s) Date Size
2D/3D Models for POWERMAX II M and P English 20 Aug 2018 Copy URL
Trade Compliance Kollmorgen is committed to sourcing components and materials from companies that share our values regarding respect for human rights, integrity and environmental responsibility. Kollmorgen is also...
Ingress Protection of Servo Motors [toc] Sealing is an important design tool used to prolong the life of motors against harsh environments containing dust or liquid contaminants. There are arguably an unlimited number of...
Normen und Richtlinien [toc] Allgemeines Struktur des Normenwesens am Beispiel der EN ISO 12100 Europäische Richtlinien New Legislative Framework Blue Guide: Leitfaden für die Umsetzung der...
Instructions for Selecting a Stepper Motor The Basics of Selecting a Stepper Motor The vast majority of stepper applications are fairly simple in terms of selecting the motor and drive.  Most applications have one or more of a...
Standards and Directives [toc] General Structures of standards with EN ISO 12100 as an example ISO Standards Safety of Machinery — General Principles for Design ISO 12100:2010 UL Standards...


Title Language(s) Date Size
Blue Guide English, German 29 Jun 2022 Copy URL
pdfCEL China Efficiency Labelling for Servo and Stepper Motors English 17 Dec 2021 139.72 KB Copy URL
pdfKollmorgen CE Technical Notice - Servo and Stepper Motors Efficiency English 26 Aug 2020 389.92 KB Copy URL
pdfKollmorgen EU Declaration of Conformity POWERMAX M-P English 16 Jun 2020 395.28 KB Copy URL
pdfPowermax EU RoHS Declaration (RoHS10) English 25 Apr 2022 214.63 KB Copy URL
pdfPOWERMAX M-P EU-Konformitätserklärung German 09 Sep 2021 329.25 KB Copy URL
pdfPowermax REACH SVHC Certificate of Compliance English 25 Apr 2022 282.96 KB Copy URL

Get Started

Count on Kollmorgen support to help you design and build a successful machine and keep it reliably productive, anywhere in the world. Our co-engineering experts will work with you to tailor a perfect-fit solution for your motion requirements.

Talk to a motion expert