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Home » Products » Motors » Torque motors

Torque motors

Torque motors
Torque motors
Product Code : 786565
Product Description

Torque motors

Introduction

Torque Electric motors are induction motors designed for applications which require occasional or prolonged stall, or controlled applications nearly stalled. The basic difference between a torque motor & a standard induction motor is in the shape of the speed torque curve and thermal capacity to withstand locked rotor currents. Torque motors are rated at locked rotor torque where standard motors are rated in horsepower.
A standard squirrel cage motor tries to maintain the speed as it is loaded while a Torque motor will drop in speed as it is loaded. The desired speed can also be achieved by varying supply voltage.
 
Construction:

Torque motors are normally induction motors of toroidal construction. Their main differences from other similar motors are their wide diameters, to allow for high levels of torque, and their thermal performance, to allow their continuous operation while drawing high current in a stalled state.

Torque Motors Suitable For 415V±10%, 50Hz±5%, Combined ±10%, 3 Phase Supply, Foot Mounted (B3 Construction), Ambient Temperature 50°C, Class 'F' Insulation, Ip55 Protection, Continuous Rated (S1 Duty) With Bare Shaft & Key As Per Is: 325 / Iec: 60034-1.

KW

HP

Torque (kg.m)

Frame

4 Pole, 1500 RPM

0.075

0.1

0.048

63

0.15

0.2

0.096

71

0.22

0.3

0.144

80

0.37

0.5

0.24

90S

0.55

0.75

0.36

90L

0.75

1

0.48

100L

1.1

1.5

0.72

112M

1.23

1.65

0.8

112M

1.5

2

0.96

112M

1.9

2.5

1.2

132S*

2.2

3

1.44

132M*

3.7

5

2.42

160M*

5.5

7.5

3.57

160L*

6 Pole, 1000 RPM

0.18

0.25

0.18

90S

0.37

0.5

0.36

90L

0.55

0.75

0.54

100L

0.75

1

0.72

112M

1.1

1.5

1.08

132S*

1.5

2

1.46

132S*

3.7

5

3.62

160L*

8 Pole, 750 RPM

0.037

0.05

0.048

71

0.075

0.1

0.096

80

0.15

0.2

0.19

90S

0.18

0.25

0.24

90L

0.37

0.5

0.48

100L

0.55

0.75

0.72

112M

0.75

1

0.96

132S*

1.1

1.5

1.44

132M*

12 Pole, 500 RPM

0.37

0.5

0.72

112M

  •  With Forced Cooling Arrangement.

Application

  • In The Manufacturing Of Paper, Wire, Films, Etc The Product Often Is Unwound, Coated And Rewound. Constant Tension Is Necessary So The Material Is Not Stretched And Coatings Are Of Uniform Thickness.
  • It Is Necessary To Wind The Product On Reels Or Drums With Constant Tension And Constant Linear Speeds. As The Product Is Winding On The Reel The Diameter Will Increase So The Reel Rotational Speed Must Decrease In Order To Maintain Constant Linear Speed. Also The Motor Torque Must Increase Proportionally To The Increase In Diameter In Order To Maintain Constant Tension.
  • A Torque Motor May Be Used As A Dynamic Brake, Applying Torque To The Shaft In One Direction While The Connected Load Is Actually Driving The Shaft In The Opposite Direction. This Type Of Operation Is Typical Of Unwanders & Hold Back Rolls. The Principles Of Operation Are Similar To Winders.

AAKASH POWERTECH (P) LTD.


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