20M020D

20M020D Can Stack Stepper Motor
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20M020D Can Stack Stepper Mini Motor

20M020D

The 20M020D provides up to 1.55 oz-in (10.95 mNm) of holding torque in a 20 mm frame size. The neodymium magnets provide high power density for applications that need moderate torque in a small package. It is available in 5 or 12 volt windings, and in unipolar or bipolar designs.

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
  • Unipolar and bipolar winding options

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

Applications

Part Number 20M020D1B 20M020D1U 20M020D2B 20M020D2U
Motor Diameter (in) 0.807 0.807 0.807 0.807
Motor Diameter (mm) 20.5 20.5 20.5 20.5
Standards Met RoHS Compliant RoHS Compliant RoHS Compliant RoHS Compliant
Step Angle (degree) 18 18 18 18
Steps per Revolution 20 20 20 20
Ambient Operating Temperature Range (°C) -20 to +70 -20 to +70 -20 to +70 -20 to +70
Ambient Operating Temperature Range (°F) -4 to +158 -4 to +158 -4 to +158 -4 to +158
Nominal Voltage (V) 5 5 12 12
Rotor Inertia (gcm²) 0.41 0.41 0.41 0.41
Rotor Inertia (oz-in-sec² 10ˉ⁶) 0.00224 0.00224 0.00224 0.00224
Weight (g) 24 24 24 24
Weight (oz) 0.83 0.83 0.83 0.83
Absolute Accuracy 2 ph. On, Full Step (degree) ± 1.5 ± 1.5 ± 1.5 ± 1.5
Coil Temperature, Max (°C) 130 130 130 130
Coil Temperature, Max (°F) 266 266 266 266
Detent Torque (mNm) 3.53 3.53 3.53 3.53
Detent Torque (oz-in) 0.5 0.5 0.5 0.5
Dielectric Withstanding Voltage (VAC) 450 for 2 seconds 450 for 2 seconds 450 for 2 seconds 450 for 2 seconds
Holding Torque, Min (mNm) 10.95 7.77 10.95 7.77
Holding Torque, Min (oz-in) 1.55 1.1 1.55 1.1
Inductance per Phase, Typical (mH) 7.8 3.9 52.8 20.3
Insulation Resistance at 500 VDC (Mohm) 100 100 100 100
Rated Current per Phase (A) 0.25 0.25 0.1 0.1
Resistance per Phase, ± 10% (Ohm) 20 20 115.2 115.2
Winding Phase Bipolar Unipolar Bipolar Unipolar
Leadwire AWG #28, UL 1429 (80°C, 150 V) AWG #28, UL 1429 (80°C, 150 V) AWG #28, UL 1429 (80°C, 150 V) AWG #28, UL 1429 (80°C, 150 V)
Document Document Type Language File Type
20M020D Specification Page Specification Page
20M020D drawing 2D Drawing
20M020D 3D drawing 3D Drawing