Motion Control – Vacuum Compatible Voice Coil Actuator with Integrated Thermal Sensor

Motion Control – Vacuum Compatible Voice Coil Actuator

motion control -linear actuator

motion control- h2wSanta Clarita, CA —– Motion Control – H2W Technologies, Inc. has designed and manufactured a non-commutated DC actuator, otherwise known as a
voice coil actuator, designed for vacuum operation in a cryogenic environment. H2W has worked with several aerospace customers, developing manufacturing processes and material selection to provide customers with the ability to design motors with low-outgassing in UHV conditions, which meet NASA’s Collected Volatile Condensable Materials and Total Mass Loss requirements.

The cryogenic environment required the voice coil to have elements designed to withstand the harsh environment, which required specific material selection regarding bearings, shaft, and magnetic material and coatings. Additionally, this motor had thermal sensors or RTDs integrated to monitor the temperature of the windings.

The actuator (NCM06-16-037-2SB3TV) is capable of a continuous force of 3.7 pounds [16.5 N] and a peak force of 11.1 pounds [49.4 N] at a duty cycle of 10% (i.e., 1 second on and 9 seconds off). With a moving mass of just under 0.4 pounds [3.6 kg], this allows for a maximum theoretical continuous acceleration of nearly 10 G’s.

This has a stroke of 0.6” [15.2 mm], and has a Force Constant of 1.0 lbs./amp [4.5 N/amp]. This relatively large stroke allows for a greater range of applications that may require greater strokes and high accelerations.


About H2W Technologies, Inc.

H2W Technologies, Inc. is dedicated to the design and manufacture of linear and rotary motion products that are used in the motion control industry. The complete line of linear electric motors includes: Single and dual axis linear steppers, DC brush and brushless linear motors, voice coil actuators, and AC induction motors. Also offered is a complete line of ball screw, lead screw and belt driven positioning stages.

Other motion control products include: Limited angle torque motors for compact, limited angular excursion rotary servo applications, 3 phase brushless rotary servo motors with matching digital servo amplifiers and permanent magnet linear brakes for fail-safe, zero power braking for baggage handling and people moving applications as well as amusement park rides.

With over 75 years combined experience in the linear and rotary motion field, the H2W Technologies team of engineers offers the optimal solution to the most demanding motion control, requirements.


For additional information contact Mark Wilson at H2W Technologies, 26380 Ferry Ct, Santa Clarita, CA 91350; Tel: 888-702-0540, Fax: 661-251-2067, E-Mail: or visit the website at

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