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Good-Performance. Good Price.

Our ElectroCraft RapidPower™ NEMA 34 is a compact, high-performance brushless motor incorporating ball bearing construction, a low cogging electro-magnetic design with both low audible and magnetic noise. It is available with a hall-effect commutation encoder or a variety of optical encoders for higher precision applications.
Unit of Measure

Specifications

NEMA Frame Size

 N/A 34

Maximum Length

 N/A 2.84 in71.1 mm

Front Shaft Diameter (A)

 N/A 0.3745 in0.3750 in

Front Shaft Length (B)

 N/A 1.25 in

Tolerance for Front Shaft Length (B)

 N/A ±0.03 in

Pilot Diameter (C)

 N/A 2.873 in2.875 in

Pilot Length (D) - Reference

 N/A 0.06 in

Number of Mounting Holes (E) - Reference

 N/A 4

Mounting Hole Pattern (E) - Reference Size on 3.875 Inch Direct Bonded Copper (D.B.C.)

 N/A 0.220 in

Tolerance for Mounting Hole Pattern (E) - Reference

 N/A ±0.010 in

Mounting Hole Spacing (F) - Reference

 N/A 2.74 in

Flange (G) External Dimension - Reference

 N/A 3.38 in

Rear Shaft Diameter (H)

 N/A 0.2495 in0.2500 in

Rear Shaft Length (I)

 N/A 0.500 in

Tolerance for Rear Shaft Length (I)

 N/A ±0.040 in

Single Ended Encoder Length (J) - Reference

 N/A 0.35 in

Differential Encoder Length (J) - Reference

 N/A 0.55 in

Industry Standards

 N/A NEMA

Mechanical/Winding Data

Continuous Stall Torque

 N/A 112 oz·in79 N·cm

Peak Torque

 N/A 392 oz·in277 N·cm

Motor Constant

 N/A 18.10 oz·in/√ Watt12.78 N·m/√ Watt

Electrical Constant

 N/A 4.80 ms

Mechanical Constant

 N/A 6.70 ms

Rotor Inertia

 N/A 0.0149 oz·in·s²1052.2 g·cm²

Thermal Resistance

 N/A 2.0 ºC/W

Weight

 N/A 64.0 oz1.8 kg

Number of Poles

 N/A 4

Design Voltage (Winding Models)

Direct Current (DC) Design Voltage for 112V24 & 79V24 Winding Models

 N/A 24 V

Direct Current (DC) Design Voltage for 112V48 & 79V48 Winding Models

 N/A 48 V

Direct Current (DC) Design Voltage for 112V90 & 79V90 Winding Models

 N/A 90 V

Direct Current (DC) Design Voltage for 112V160 & 79V160 Winding Models

 N/A 160 V

Direct Current (DC) Design Voltage for 217V24 & 153V24 Winding Models

 N/A 24 V

Direct Current (DC) Design Voltage for 217V48 & 153V48 Winding Models

 N/A 48 V

Direct Current (DC) Design Voltage for 217V90 & 153V90 Winding Models

 N/A 90 V

Direct Current (DC) Design Voltage for 217V160 & 153V160 Winding Models

 N/A 160 V

Direct Current (DC) Design Voltage for 313V24 & 221V24 Winding Models

 N/A 24 V

Direct Current (DC) Design Voltage for 313V48 & 221V48 Winding Models

 N/A 48 V

Direct Current (DC) Design Voltage for 313V90 & 221V90 Winding Models

 N/A 90 V

Direct Current (DC) Design Voltage for 313V160 & 221V160 Winding Models

 N/A 160 V

Continuous Current (Winding Models)

Continuous Current for 112V24 & 79V24 Winding Models

 N/A 24.4 A

Continuous Current for 112V48 & 79V48 Winding Models

 N/A 12.1 A

Continuous Current for 112V90 & 79V90 Winding Models

 N/A 6.1 A

Continuous Current for 112V160 & 79V160 Winding Models

 N/A 3.2 A

Continuous Current for 217V24 & 153V24 Winding Models

 N/A 22.3 A

Continuous Current for 217V48 & 153V48 Winding Models

 N/A 16.9 A

Continuous Current for 217V90 & 153V90 Winding Models

 N/A 8.9 A

Continuous Current for 217V160 & 153V160 Winding Models

 N/A 5.0 A

Continuous Current for 313V24 & 221V24 Winding Models

 N/A 22.7 A

Continuous Current for 313V48 & 221V48 Winding Models

 N/A 17.0 A

Continuous Current for 313V90 & 221V90 Winding Models

 N/A 11.3 A

Continuous Current for 313V160 & 221V160 Winding Models

 N/A 6.8 A

Peak Current (Winding Models)

Peak Current for 112V24 & 79V24 Winding Models

 N/A 85.5 A

Peak Current for 112V48 & 79V48 Winding Models

 N/A 42.4 A

Peak Current for 112V90 & 79V90 Winding Models

 N/A 21.2 A

Peak Current for 112V160 & 79V160 Winding Models

 N/A 11.2 A

Peak Current for 217V24 & 153V24 Winding Models

 N/A 78.0 A

Peak Current for 217V48 & 153V48 Winding Models

 N/A 59.1 A

Peak Current for 217V90 & 153V90 Winding Models

 N/A 31.1 A

Peak Current for 217V160 & 153V160 Winding Models

 N/A 17.6 A

Peak Current for 313V24 & 221V24 Winding Models

 N/A 79.3 A

Peak Current for 313V48 & 221V48 Winding Models

 N/A 59.6 A

Peak Current for 313V90 & 221V90 Winding Models

 N/A 39.7 A

Peak Current for 313V160 & 221V160 Winding Models

 N/A 16.5 A

Voltage Constant (Winding Models)

Direct Current (DC) Voltage Constant for 112V24 & 79V24 Winding Models

 N/A 3.4 V/krpm

Direct Current (DC) Voltage Constant for 112V48 & 79V48 Winding Models

 N/A 6.8 V/krpm

Direct Current (DC) Voltage Constant for 112V90 & 79V90 Winding Models

 N/A 13.7 V/krpm

Direct Current (DC) Voltage Constant for 112V160 & 79V160 Winding Models

 N/A 25.9 V/krpm

Direct Current (DC) Voltage Constant for 217V24 & 153V24 Winding Models

 N/A 7.2 V/krpm

Direct Current (DC) Voltage Constant for 217V48 & 153V48 Winding Models

 N/A 9.5 V/krpm

Direct Current (DC) Voltage Constant for 217V90 & 153V90 Winding Models

 N/A 18.1 V/krpm

Direct Current (DC) Voltage Constant for 217V160 & 153V160 Winding Models

 N/A 31.8 V/krpm

Direct Current (DC) Voltage Constant for 313V24 & 221V24 Winding Models

 N/A 10.2 V/krpm

Direct Current (DC) Voltage Constant for 313V48 & 221V48 Winding Models

 N/A 13.6 V/krpm

Direct Current (DC) Voltage Constant for 313V90 & 221V90 Winding Models

 N/A 20.4 V/krpm

Direct Current (DC) Voltage Constant for 313V160 & 221V160 Winding Models

 N/A 34.0 V/krpm

Tolerance for Voltage Constant

 N/A ±10 %

Torque Constant (Winding Models)

Torque Constant for 112V24 & 79V24 Winding Models

 N/A 4.6 in·oz/A3.248 N·cm/A

Torque Constant for 112V48 & 79V48 Winding Models

 N/A 9.2 in·oz/A6.497 N·cm/A

Torque Constant for 112V90 & 79V90 Winding Models

 N/A 18.5 in·oz/A13.064 N·cm/A

Torque Constant for 112V160 & 79V160 Winding Models

 N/A 35.0 in·oz/A24.715 N·cm/A

Torque Constant for 217V24 & 153V24 Winding Models

 N/A 9.7 in·oz/A6.850 N·cm/A

Torque Constant for 217V48 & 153V48 Winding Models

 N/A 12.8 in·oz/A9.039 N·cm/A

Torque Constant for 217V90 & 153V90 Winding Models

 N/A 24.4 in·oz/A17.230 N·cm/A

Torque Constant for 217V160 & 153V160 Winding Models

 N/A 43.0 in·oz/A30.365 N·cm/A

Torque Constant for 313V24 & 221V24 Winding Models

 N/A 13.8 in·oz/A9.745 N·cm/A

Torque Constant for 313V48 & 221V48 Winding Models

 N/A 18.4 in·oz/A12.993 N·cm/A

Torque Constant for 313V90 & 221V90 Winding Models

 N/A 27.6 in·oz/A19.490 N·cm/A

Torque Constant for 313V160 & 221V160 Winding Models

 N/A 46.0 in·oz/A32.483 N·cm/A

Tolerance for Torque Constant

 N/A ±10 %

Resistance (Winding Models)

Resistance for 112V24 & 79V24 Winding Models

 N/A 0.1 Ohms

Resistance for 112V48 & 79V48 Winding Models

 N/A 0.2 Ohms

Resistance for 112V90 & 79V90 Winding Models

 N/A 0.8 Ohms

Resistance for 112V160 & 79V160 Winding Models

 N/A 4.0 Ohms

Resistance for 217V24 & 153V24 Winding Models

 N/A 0.1 Ohms

Resistance for 217V48 & 153V48 Winding Models

 N/A 0.2 Ohms

Resistance for 217V90 & 153V90 Winding Models

 N/A 0.7 Ohms

Resistance for 217V160 & 153V160 Winding Models

 N/A 2.2 Ohms

Resistance for 313V24 & 221V24 Winding Models

 N/A 0.2 Ohms

Resistance for 313V48 & 221V48 Winding Models

 N/A 0.3 Ohms

Resistance for 313V90 & 221V90 Winding Models

 N/A 0.5 Ohms

Resistance for 313V160 & 221V160 Winding Models

 N/A 1.6 Ohms

Tolerance for Resistance

 N/A ±10 %

Inductance (Winding Models)

Inductance for 112V24 & 79V24 Winding Models

 N/A 0.3 mH

Inductance for 112V48 & 79V48 Winding Models

 N/A 1.2 mH

Inductance for 112V90 & 79V90 Winding Models

 N/A 4.8 mH

Inductance for 112V160 & 79V160 Winding Models

 N/A 20.3 mH

Inductance for 217V24 & 153V24 Winding Models

 N/A 0.6 mH

Inductance for 217V48 & 153V48 Winding Models

 N/A 1.1 mH

Inductance for 217V90 & 153V90 Winding Models

 N/A 3.9 mH

Inductance for 217V160 & 153V160 Winding Models

 N/A 12.0 mH

Inductance for 313V24 & 221V24 Winding Models

 N/A 1.0 mH

Inductance for 313V48 & 221V48 Winding Models

 N/A 1.7 mH

Inductance for 313V90 & 221V90 Winding Models

 N/A 3.9 mH

Inductance for 313V160 & 221V160 Winding Models

 N/A 11.0 mH

Tolerance for Inductance

 N/A ±10 %