AKM Washdown (Food) Servomotors (IP67)

The AKM Washdown and AKM Washdown Food servomotors are part of the AKM brushless servo motor family of our manufacturer Kollmorgen . Thanks to a special hygienic coating, stainless steel is only used for the shaft of these hygienic servo motors, which reduces costs while still meeting hygienic standards (up to FDA approval). Together with IP67 seals the AKMW Washdown Servo Motors are suitable for many applications in food, beverage, pharmaceutical and packaging industriy, which are subject to strict hygienic regulations.


Key features of the AKM Washdown servo motors:

  • hygienic coating
  • stainless steel only in shaft, screws and plug connections
  • protection class IP66/IP67
  • optional with brake

The most important features of the AKM Washdown Food series servo motors:

  • food grade
  • FDA-compliant coating and bearing lubrication
  • protection class IP67 design featuring PTFE shaft seal
  • coating resistant to corrosive chemicals including highly alkaline or acidic cleaning products

AKMH stainless steel servo motors (IP69K)

The AKMH servomotors of our manufacturer Kollmorgen are stainless steel servomotors with IP69K protection, designed to meet toughest hygienic requirements. They are available in sizes 2 to 6, with the AKMH2 being the most compact stainless steel servo motor on the market. Simple and quick cleaning results in higher productivity. They are particularly suitable for use in machine areas with aseptic processes.


Even at the design stage of the AKMH hygienic stainless steel motors, special attention was paid by our manufacturer Kollmorgen to details that make them easy to use in applications with special hygienic requirements, as no complex protective devices are required, especially in open machines with direct food contact and splash zones:

  • smooth surface (with roughness <0.8μm, all radii R1.5) meeting EHEDG & 3A criteria for fast cleaning
  • surface and lasered type plate prevent dirt deposits and thus germs
  • conical end cap, which prevents water accumulation even when mounted vertically
  • IP69K O-ring seals according to EHEDG and 3A hygienic standards
  • single cable for power and encoder, for increased reliability, faster cleaning, and fewer places to harbor pathogens
  • cable designed to elminate the need for conduit
  • optionally with ventilation valve against condensation inside the motor


The most important features of AKMH stainless steel servo motors:

  • protection class IP69K for high pressure cleaning up to 100bar and chemical cleaning (incl. shaft sealing ring and cable outlet)
  • Hygienic standards comply with FDA standards
  • high speeds up to 8,000 rpm
  • torque derating less than 20% compared to standard servo motor with same size
  • 5 sizes with 4 rotor lengths and winding options
  • options for stainless steel brushless servomotors AKMH: brake, ventilation valve, feedback of digital resolver SFD or Hiperface DSL (single cable solution)


The AKMH stainless steel servo motors can be ideally combined with the stainless steel leadscrew and ball screw actuators of the ERD series of Tolomatic.

motor type power continuous torque peak torque max. speed motor diameter
  kW Nm Nm   mm
AKMH2 0.18 - 0.52 0.4 - 1.4 1.6 - 5.5 8000 72.5
AKMH3 0.35 - 0.72 1.1 - 2.5 4 - 10.5 8000 85
AKMH4 0.6 - 1.0 1.7 - 5 6 - 20 6000 114
AKMH5 0.77 - 2.2 4 - 12 13 - 45 6000 132
AKMH6 2.1 - 5.5 10.4 - 21 35 - 79 6000 186