Hybrid Stepper Motors

HT17-278 NEMA 17 High Torque Step Motor

The HT17-278 two-phase stepper motor is suitable for a wide range of motion control applications. Terminated with 8 motor leads, the motor can be connected in a few different ways, including bipolar series and bipolar parallel.

Specification Downloads

Part NumberHT17-278

Frame SizeNema 17

Motor TypeHigh torque

Part Number w/Double ShaftHT17-278D

Part Number w/EncoderHT17-278D-WAA

Motor Length2.47 inches

Number of Lead Wires8

Lead Wire Configurationflying leads, no connector

Lead Wire/Cable Length12 inches inches

Lead Wire Gauge26 AWG

Unipolar Holding Torque79 oz-in

Bipolar Holding Torque113 oz-in

Step Angle1.8 deg

Bipolar Series Current1.0 A/phase

Bipolar Series Resistance6.4 Ohms/phase

Bipolar Series Inductance12 mH/phase

Bipolar Parallel Current2.0 A/phase

Bipolar Parallel Resistance1.6 Ohms/phase

Bipolar Parallel Inductance3.0 mH/phase

Unipolar Current1.4 A/phase

Unipolar Resistance3.2 Ohms/Phase

Unipolar Inductance3.0 mH/phase

Rotor Inertia1.74E-03 oz-in-sec2

Weight1.32 lbs

Storage Temperature-30 to 70 °C

Operating Temperature-20 to 50 °C

Insulation ClassClass B (130 ºC)

Maximum Radial Load4.7 lbs

Maximum Thrust Load2.25 lbs

Shaft Run Out0.0012 inch T.I.R. max

Radial Play0.0008 inch max w/ 1.1 lb load

End Play0.003 inch max w/ 1.1 lb load

Perpendicularity0.004 inches

Concentricity0.002 inches

HT17-278 NEMA 17 High Torque Step Motor

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