NEMA 34 Stepper Motor

  • Holding torque up to 1560 Oz-in (11 Nm)
  • 1.2° or 1.8° Step angle +- 5%
  • Operating temperature: -20°C ~ 50°C
  • Bipolar 4 or 8 wires & Unipolar 6 wires
  • Optional: encoder integrated steppers, planetary or spur gearbox, linear stepper,  IP65 double shaft, custom shaft and mounting flange.

NEMA 34 stepper motor is a stepper motor with 3.4 x 3.4 inches (86 x 86 mm) faceplate. GEMS offer high performance round body models and high torque square models. The high torque type generates torque of approx. 2 times the level achieved by the standard type. The maximum holding torque of NEMA 34 steppers is up to 1550 oz-in (11 Nm). Other than the series and parallel bipolar configuration, GEMS provide unipolar configuration which adds an extra wire in the middle of each coil. Unipolar stepper motor significantly reduces the complexity of motor driver. We also offer NEMA 34 stepper linear actuators and a large selection of planetary and spur geared stepper motors for you to choose from. For NEMA 34 steppers used in the  waterproof application, please check our IP65 rated stepper motors.

We stock some best-selling models of NEMA 34 Stepper motors (the ones with the pricing info). Please send the quantity and the shipping address to info@gemsmotor.com, and we’ll respond with the shipping cost and a payment link. We accept Credit cards, Paypal, Wire transfers and Bitcoins.

NEMA 34, 1.8° 86mm Stepper Motors

Dual shaft and 6/8 wires configurations are available upon request
ModelHolding TorqueHolding TorquePhase ResistancePhase CurrentPhase InductanceRotor Inertia# of Lead WiresWeightLength LPrice (100 pc)
Oz-inN.mOhmAmHkg-cm2kgmmUSD
GM86HS68-40043692.60.6343.20.85426829
GM86HS80-60046384.50.3863.51.0542.57533
GM86HS80-42084963.50.724.23.51.0582.57533
GM86HS98-50049636.80.5541.55439839
GM86HS116-600412048.50.666.81.843.511447
GM86HS116-50088225.80.7553.21.883.511447
GM86HS128-5004127590.6552.243.912855
GM86HS155-60041558110.7568.52.544.215059

NEMA 34, 1.2° 86mm Stepper Motors

ModelHolding TorqueHolding TorquePhase ResistancePhase CurrentPhase InductanceRotor Inertia# of Lead WiresWeightLength L
Oz-inN.mOhmAmHkg-cm2kgmm
GM86HSS68-35032982.11.23.52.50.853268
GM86HSS68-45032982.10.74.51.50.853268
GM86HSS98-35036384.52.53.56.51.553398
GM86HSS98-45036384.51.44.53.91.553398
GM86HSS128-35038225.83.53.59.82.233.9128
GM86HSS128-45038225.82.14.56.22.233.9128
nema-34-stepper-motor-

Dimensions (mm)

Shaft option 1# 14mm dia’ keyway. Double shaft available upon request.

NEMA-34-1.8°-86mm-Stepper-Motors-drawing

Shaft option 2# 0.5″ dia’, Two flats, equivelent to Lin Engineering 8718 series. Double shaft available upon request.

NEMA34 stepper-two-flats

*Shaft Diameter: Standard 14mm, Optional 12.7mm; Dual shaft is avaiable upon request

NEMA 34 stepper motor, torque speed curve