ACS Advanced Control Systems Corporation

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Company Information
Advanced Control Systems Corporation
35 Corporate Park Drive
Pembroke, MA 02359
USA
TEL: 781-829-9228 FAX: 781-829-9875


Science In Motion

How To Contact Us
Contact us at any time to speak with a real live engineer, or contact us by e-mail for product information, quotations and product support...

info.desk @ acsmotion.com sales.desk @ acsmotion.com

Design & Manufacturing
All Advanced Control Systems Corporation Motor Drivers, Servo Amplifiers, Interface Modules and Controllers are designed, developed, manufactured and assembled with great quality and efficiency in our facilities in the United States of America.

Stepping Motors from Advanced Control Systems
ACS Scientific STH Series High-Torque and ST Series Standard Torque Stepping Motors are designed for optimum performance at a reasonable price. Motor customization including custom shafts, windings, lead-wire configurations and connectors provides you with with the best solution for your application.
  • STH Series - High-Torque Hybrid Stepping Motors
    • Click on the Series to Review Complete Motor Specifications
Motor Series
NEMA Size
Frame Size
mm (in)
Bolt Spacing
mm (in)
Number of Phases
Step Angle
Maximum Holding Torque
select your unit of measure
STH20 Series NEMA 8
20.2 (.79) 16.2 (.63) 2 1.8 °
STH28 Series NEMA 11
28.2 (1.11) 23 (.90) 2 1.8 °
STH42 0.9 °Series NEMA 17
43.3 (1.65) 31 (1.22) 2 0.9 °
STH42 Series NEMA 17
43.3 (1.65) 31 (1.22) 2 1.8 °
STH57 0.9º Series NEMA 23
56.4 (2.22) 47.14 (1.85) 2 0.9 °
STH57 Series NEMA 23
56.4 (2.22) 47.14 (1.85) 2 1.8 °
STH85 Series NEMA 34
85.8 (3.38) 69.6 (2.74) 2 1.8 °
STH110 Series NEMA 42
109.8 (2.22) 47.1 (1.85) 2 1.8 °
General Specification for STH Series High-Torque Hybrid Stepping Motors
  • ST Series - Standard Torque Hybrid Stepping Motors
    • Click on the Series to Review Complete Motor Specifications
NEMA Size Frame Size

mm (in)

Bolt Spacing

mm (in)

Number of Phases Step Angle
Maximum Holding Torque
select your unit of measure
ST35 Series NEMA 14
35.20 (1.38) 26 (1.02) 2 1.8 °
ST39 Series NEMA 17
39.3 (1.54) 31 (1.22) 2 1.8 °
ST57 Series NEMA 23
56.4 (2.22) 47.14 (1.85) 2 1.8 °
ST86 Series NEMA 34
82.50 (3.25) 69.60 (2.74) 2 1.8 °
ST130 Series NEMA 48
134.00 (5.27) 100.00 (3.94) 2 1.8 °
ST130-5 Series
NEMA 48
134.00 (5.27) 100.00 (3.94) 5 1.8 °
General Specification for ST Series Hybrid Stepping Motors

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