Compact steppers are robust and lightweight
A
Danaher Motion product story
Edited by the Engineeringtalk editorial team
Mar 5, 2002
Thomson Airpax Mechatronics has a new family of 20mm size stepper motors, the 20M020D Series.
Thomson Airpax Mechatronics has a new family of 20mm size stepper motors, the 20M020D Series.
The new lightweight (23.5g) motors, which are available in both bipolar and unipolar winding configurations, measure only 20mm diameter by 16.4mm long, and produce 7.1mNm pullout torque at 200pulse/s, when driven with a 36V DC chopper drive at 250mA/phase.
Couple the small package size and ability to operate motors at various current levels, and you have a motor ideal for applications in automotive instruments and controls, medical/laboratory equipment, such as micro pipettes, fluid dispensers, pumps and syringes, as well as portable printers and scanners.
Additionally, the motor features and robustness have created universal applications in markets as diverse as surface mount component delivery systems, parking meters, instrumentation and industrial controls.
Other key specifications include: 1.25W input power per winding; an 18-degree step angle (20 step/rev), with +/-1.5-degree step angle tolerance; holding torque of 11.3mNm with two phases energised (bipolar version); and permanently lubricated sintered bronze bearings as standard.
Ball bearings are available for special application requirements.
Both unipolar and bipolar devices are available for use with 5 and 12V supplies, with a maximum operating temperature of 100C.
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