Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications!

- the most efficient way to navigate the Engineering ToolBox!

IEC - NEMA Standard Torques

IEC and NEMA torque classifications of electrical motors

Sponsored Links

NEMA (National Electrical Manufacturers Association) has classified electrical motors in four different NEMA designs where torque and starting-load inertia are important criteria.

Torques of the IEC Design N motors are in general close to NEMA Design B motors. IEC Design N and NEMA Design B are the most commonly used industrial types.

Torques of the IEC Design H are nearly identical to NEMA Design C.

IEC/NEMA Standard Torques (lb ft)
Power (hp)	2 Pole						4 Pole
Power (hp)	Locked Rotor Torque		Pull Up Torque		Break Down Torque		Locked Rotor Torque		Pull Up Torque		Break Down Torque
3	170	160	110	110	200	230	180	215	120	150	200	250
5	160	150	110	105	200	215	170	185	120	130	200	225
7.5	150	140	100	100	200	200	160	175	110	120	200	215
10	150	135	100	100	200	200	160	165	110	115	200	200
15 - 20	140	130	100	100	200	200	150	150	110	105	200	200

1 lb ft = 1.356 Nm

Sponsored Links

Related Topics

Electrical - Electrical units, amps and electrical wiring, wire gauge and AWG, electrical formulas and motors

Related Documents

Angular Motion - Power and Torque - Angular velocity and acceleration - power and torque
Centrifugal Pumps - Speed Torque Curve - Centrifugal pumps and the characteristic speed torque curve
Electric Motors - Power and Torque vs. Speed - Speed of electrical motors - output power and torque
Electrical Motor Efficiency Ratings - NEMA - electrical motor efficiency ratings
Electrical Motors - Frame Dimensions - NEMA electrical motor frame dimensions
IEC Duty Cycles - The eight - S1 - S8 - IEC duty cycles of operating electrical motors
Improvised Torque Wrench - Improvised torque wrench with luggage scale
NEMA A, B, C and D Electrical Motor Design - NEMA has established four different designs - A, B, C and D for electrical induction motors
Torque - Work done and Power transmitted - The work done and power transmitted by a constant torque
Torque or Moment of Force - Online Converter - Torque or moment - the tendency of a force to rotate an object
Torques in Electrical Induction Motors - Torques describes and classifies electrical motors

Tag Search

en: iec nema torque electrical motors
es: motores eléctricos de par NEMA IEC
de: IEC NEMA Drehmoment Elektromotoren

Sponsored Links

Search the Engineering ToolBox

- the most efficient way to navigate the Engineering ToolBox!

Engineering ToolBox - SketchUp Extension - Online 3D modeling!

Add standard and customized parametric components - like flange beams, lumbers, piping, stairs and more - to your Sketchup model with the Engineering ToolBox - SketchUp Extension - enabled for use with the amazing, fun and free SketchUp Make and SketchUp Pro .Add the Engineering ToolBox extension to your SketchUp from the SketchUp Pro Sketchup Extension Warehouse!

Translate this page to

About the Engineering ToolBox!

Citation

This page can be cited as

Engineering ToolBox, (2004). IEC - NEMA Standard Torques. [online] Available at: https://www.engineeringtoolbox.com/iec-nema-standards-torques-d_741.html [Accessed Day Mo. Year].

Modify access date.

Customize Ads in the ToolBox

Make ads more useful in Google Ad Settings .

Advertise in the ToolBox

If you want to promote your products or services in the Engineering ToolBox - please use Google Adwords. You can target the Engineering ToolBox by using AdWords Managed Placements.

close

3D Engineering ToolBox - draw and model technical applications!

2D Engineering ToolBox - create and share online diagram drawing templates!

Engineering ToolBox Apps - mobile online and offline engineering applications!

Scientific Online Calculator

Scientific Calculator

6 14

Sponsored Links