NMB PG, GT and GS Hybrid Stepping Motors with Gearboxes
NMB and MinebeaMitsumi’s geared hybrid stepping range combines a two-phase hybrid motor with a reduction gearbox. PG20, PG25, GT42, GT56 and GS42 are distinct families with different ratios, torque limits, electrical connections and backlash. Their smaller nominal output-step angles are useful command scales, but the gearhead’s mechanical limits remain essential to positioning and load selection.
Key Specifications
Current PG20 ratios | 4.3 / 16 / 27 / 79 / 99; full output-step entries 0.419 / 0.113 / 0.067 / 0.023 / 0.018° |
PG20 rated / instantaneous torque | PG0043: 0.300 / 0.450 Nm; PG0160 and PG0270: 0.550 / 0.825 Nm; PG0790 and PG0990: 1.500 / 2.250 Nm |
Current PG25 rated / instantaneous torque | PG0043-10M100: 0.750 / 1.100 Nm; PG0160/0270: 3.000 / 4.500 Nm; PG0790/1000: 5.000 / 7.500 Nm |
PG electrical configuration | PG20: bipolar, 0.50 A, 8.50 Ω; PG25: bipolar, 1.00 A, 3.00 Ω in current tables |
GT42 ratio / permissible torque | 3.6 / 7.2 / 10 / 20 / 30 ratios; corresponding 0.35 / 0.70 / 1.00 / 1.50 / 1.50 Nm |
GT56 ratio / permissible torque | 3.6 / 7.2 / 10 / 20 / 30 ratios; corresponding 1.25 / 2.50 / 3.00 / 3.50 / 4.00 Nm |
GT electrical configurations | GT42: unipolar, 1.00 A, 3.10 Ω; GT56: unipolar, 0.90 A, 5.80 Ω |
GS42 ratio / permissible torque | 3.6 / 7.2 / 9 / 10 / 18 / 36 / 50 / 100; 0.20 / 0.40 / 0.50 / 0.56 / 0.80 / 0.80 / 0.80 / 0.80 Nm |
GS42 electrical and backlash | Unipolar, 0.85 A, 4.20 Ω; listed backlash 2° or less; nominal output steps down to 0.018° |
Control scope | External driver and controller; shaft feedback or load sensing is a separate system choice |
Price | Request a quote for exact motor, ratio, winding, shaft and operating duty |
Applications and Industries
The manufacturer identifies optical equipment, pumps and analyzers, flow-control valves and related OEM mechanisms for geared hybrid selections. Choose the exact family by its output duty, mechanical error budget, electrical architecture and environmental requirements; a component application example does not qualify a finished medical or safety-related device.
Industrial automation
Review Summary
Consider these assemblies for an OEM adjustment, pump, valve or indexing mechanism where reduction and compact stepper control fit the load cycle. Select the exact gearhead and winding from current manufacturer data. Check output torque, speed and backlash together; do not multiply motor holding torque by ratio and assume the gearbox can transmit that result indefinitely.
Price and Configuration
Request a quote for the selected configuration,quantity and delivery schedule. Confirm the exact model,options,integration scope and support terms.
