New Release - D28.1, NEMA 11 Size UHV Stepper Motor
Posted on Tuesday 1st July 2025 at 12:25
We are excited to announce the release of the D28.1 - AML's new addition to the D-series UHV compatible stepper motors.
NEMA 11 frame size
55 mNm
Suitable for use below 1 x 10-10 mbar
Bakeable to 200 °C
Operating temperature range -65 °C to +190 °C
Embedded thermocouple as standard
The D28.1 uses the NEMA 11 frame size (28 x 28 x 36 mm) and has a torque rating of 55 mNm. This compact design makes it ideal for applications where space is limited and the torque required is low. The dimensional drawing of the D28.1 is now available on the D-series UHV stepper motor datasheet.
The following performance data was obtained using an AML SMD3 stepper motor drive with a 67 V source voltage.
The D28.1 can be customised with all the standard options available across the entire D-series range. This includes options for cryogenic environments, radiation environments, the inclusion of a PT100 sensor, and custom shaft modifications. Learn more about the possible modifications to AML stepper motors in our overview on this topic here: News | Overview of AML Stepper Motor Modifications - Arun Microelectronics.
AML offers all necessary accessories for using UHV stepper motors including in-vacuum connectors, feedthroughs, airside cabling, and stepper motor drives. The SMD3 and SMD4 stepper motor drives are designed specifically for use with AML's D-series stepper motors. Learn more about AML stepper motor drives here: Stepper Motor Drives - Arun Microelectronics
Full D-series UHV Stepper Motor Lineup:
The full specification of the D28.1 is now available on our updated motor datasheet.
Links
If you would like to discuss you in-vacuum motion requirements, or are interested in learning more about the D28.1, please contact AML at sales@arunmicro.com.