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15M020D Can Stack Stepper Motor

15M020D Can Stack Stepper Mini Motor


The smallest of our can stack stepper product line, the 15M020D provides .55 oz-in (3.87mNm) of holding torque in a 15mm frame size. It is optimal for low-torque positioning applications where size and/or weight is limited.

Product Highlights

  • Excellent open loop control - no encoder necessary
  • Digitally controlled - easy to use with a micro processor
  • Cost effective - compact design, lower integration cost
  • Maintenance free - no brushes to replace

Customization Available

  • Ball bearings, clutch magnets, dampers
  • Coil modifications - resistance and inductance
  • Custom shafts - flats, knurling, diameter, length
  • Magnets - to yield higher torque or reduced detent levels
  • Mechanical integration upon request (housing, front & rear flange, shaft)
  • Pinions and gears
  • Wiring - connectors, lead length, shrink tubing


Part Number 15M020D1B
Motor Diameter (in) 0.61
Motor Diameter (mm) 15.5
Standards Met RoHS Compliant
Step Angle (degree) 18
Steps per Revolution 20
Ambient Operating Temperature Range (°C) -20 to +70
Ambient Operating Temperature Range (°F) -4 to +158
Nominal Voltage (V) 5
Rotor Inertia (gcm²) 0.12
Rotor Inertia (oz-in-sec² 10ˉ⁶) 0.000629
Weight (g) 14
Weight (oz) 0.5
Absolute Accuracy 2 ph. On, Full Step (degree) ± 1.5
Coil Temperature, Max (°C) 130
Coil Temperature, Max (°F) 266
Detent Torque (mNm) 1.62
Detent Torque (oz-in) 0.23
Dielectric Withstanding Voltage (VAC) 450 for 2 seconds
Holding Torque, Min (mNm) 3.87
Holding Torque, Min (oz-in) 0.55
Inductance per Phase, Typical (mH) 14
Insulation Resistance at 500 VDC (Mohm) 100
Rated Current per Phase (A) 0.13
Resistance per Phase, ± 10% (Ohm) 40
Winding Phase Bipolar
Leadwire AWG #28, UL 1429 (80°C, 150 V)
Document Document Type Language File Type
15M020D Specification Page Specification Page
15M020D drawing 2D Drawing
15M020D 3D drawing 3D Drawing