NMB SMF25, ST35 and SMW High-Speed PM Stepping Motors
NMB’s high-speed permanent-magnet stepping range includes thin SMF25, ST35 and SMW35–42 motor families with silicon-steel stator construction. These are pulse-driven motor components for external drive electronics. The 48- and 96-step versions differ in full-step angle and electrical characteristics, so diameter and a high-speed label are not enough to select an ordering configuration.
Key Specifications
SMF25-G48 / -G96 | 25 mm outer diameter; 8.5 mm catalog body length; 48 / 96 steps per revolution; 7.5° / 3.75° full steps |
ST35A/B-G96 | 35 mm diameter; 8.7 mm catalog body length; 96 steps per revolution; exact A/B configuration required |
SMW35-G48 / -G96 | 35 mm outer diameter; 13 mm catalog body length; 48 / 96 steps per revolution |
SMW42-G48 / -G96 | 42 mm outer diameter; 16.5 mm catalog body length; 48 / 96 steps per revolution |
SMF25 reference drives | 24 V bipolar chopper; 300 mA per phase; G48 15 Ω and G96 15.2 Ω reference windings |
SMW35 reference drives | 24 V bipolar chopper; G48 500 mA and 8.7 Ω per phase; G96 400 mA and 6.5 Ω per phase |
SMW42 reference drives | 24 V bipolar chopper; 400 mA per phase; G48 8.4 Ω and G96 4.2 Ω reference windings |
Performance documentation | Model-specific pull-in and pull-out torque-versus-pulse-frequency curves; reference conditions apply |
System scope | Motor component; external drive/controller and any required load feedback |
Price | Request a quote for the exact winding, mounting and shaft configuration |
Applications and Industries
Manufacturer-documented use includes paper-feed and other motion mechanisms in printers, scanners and office-automation equipment. Evaluate the specific load, pulse-rate profile, thermal duty and mechanical interface before selecting a motor for a related OEM mechanism.
Industrial automation
Review Summary
Consider these motors for compact paper-feed, printer, scanner or similar OEM mechanisms where a thin PM motor fits the torque-speed duty. Their value is a documented low-profile motor architecture with model-specific performance curves. Compare the load at the intended pulse frequency, and keep pull-in capability, pull-out capability and commanded resolution separate.
Price and Configuration
Request a quote for the selected configuration,quantity and delivery schedule. Confirm the exact model,options,integration scope and support terms.
