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Hybrid Stepper Motor Family
Series H17ET Hybrid Stepper Motor
H17ET Hybrid Stepper Specifications:
Mounting Flange: NEMA 17
Step angle:  1.8°
Steps per Revolution: 200
Positional Accuracy:  + 5% max.
Number of Phases: 4 (unipolar)*
Temperature Rise: 70°C max
Insulation Resistance: 100M ohms at 500VDC for 1 minute
Dielectric Strength: 500VAC for 1 minute
Insulation Class: Class B
Number of lead wires: 6 *
Lead wire: UL3265 AWG#26
Operation Ambient Temp: -10°C ~ +50°C
Radial Play: 0.03 mm max at 0.4 kg load
Axial Play: 0.08 mm max at 0.5 kg load
* Contact Hurst for other lead or phase configurations

Unipolar Drives

Motor phase winding current is switched in only one direction (typically to ground).
  • Simple low cost drive circuit
  • Requires center tap winding
  • Low Output Torque
  • 6 & 8 lead motors
Bipolar Drives
  • Motor phase winding current is switched in both directions.
  • Higher cost drive circuit
  • Higher Output Torque
  • Approximately 1.4 X Unipolar Drive
  • 4, 6, & 8 lead motors
  • 8 Lead Motors are more efficient when used with a bipolar drive.

H17ET Hybrid Stepper Drawings:
H17ET Hybrid Stepper Diagrams:
H17ET Hybrid Stepper Part Number Specification:
H17ET Hybrid Stepper Model Table:
Add
to
Cart 		Model Part
Number  		 Detent
Torque
(oz-in) 		Detent
Torque
(mN-m) 		Holding
Torque
(oz-in)		 Holding
Torque
(mN-m) 		Nominal
Voltage
(Vdc) 		Input
Power
(watts) 		Current
(amp /
phase)		 Full
Load
Temp
Rise
(deg C)		 Rotor
Inertia
(gm-cm2)		 Rotor
Inertia
(oz-in2)		 Winding
Res.
(ohms)		 Rated
Ind.
(mH)		 Case
Length
(in)		 Case
Length
(mm)		 Weight
(oz) 		Weight
(grams)
Contact Factory
H17ET H17ET032434 17 120 22.2 156.8 3.2 7.68 1.2 70 33 .18 2.7 1.8 1.34 34 7.05 200
Contact Factory
H17ET H17ET040440 19.8 140 34.7 245 4 9.6 1.2 70 53 .29 3.3 3.2 1.57 40 8.82 250
Contact Factory
H17ET H17ET040446 28.3 200 44.5 314.2 4 9.6 1.2 70 60 .33 3.3 3 1.81 46 12 340
Contact Factory
H17ET H17ET060440 19.8 140 34.7 245 6 7.2 .6 70 53 .29 10 9.5 1.57 40 8.8 250
Contact Factory
H17ET H17ET120434 19 120 22.2 156.8 12 7.2 .3 70 33 .18 40 23 1.34 34 7.05 200
Contact Factory
H17ET H17ET120440 19.8 140 34.7 245 12 9.6 .4 70 53 .29 30 27 1.57 40 8.82 250