---
title: Choose the right air motor in three easy steps - Step 2 Ascertain the torque of an air motor
description: Once you know in which environment you will use the air motor, you need to figure out which torque is necessary for the task. Indeed, a motor speed depends on its torque and speed. By deciding those two facts, you will find the perfect air motor.
---

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# [Choose the right air motor in three easy steps - Step 2 Ascertain the torque of an air motor](https://blog.modec.fr/en/choose-the-right-air-motor-in-three-easy-steps-step-2-ascertain-the-torque-of-an-air-motor)

 Rédigé par [Marie-Charlotte Messier](https://blog.modec.fr/en/author/marie-charlotte-messier) | Apr 2, 2019, 7:01:46 AM

Once you know in which environment you will use the air motor, you need to figure out which torque is necessary for the task. Indeed, a motor speed depends on its torque and speed. By deciding those two facts, you will find the perfect air motor.

## 2# Ascertain the torque of an air motor

[-> GO TO STEP 1: Ascertain the operating environment of an air motor](https://blog.modec.fr/en/choose-the-right-motor-in-three-easy-steps-step-1-ascertain-the-operating-environment-of-the-motor?hsLang=fr)

[-> GO TO STEP 3: Ascertain the necessary power of an air motor](https://blog.modec.fr/en/choose-your-air-motor-in-three-steps-step-3-ascertain-the-necessary-power-of-an-air-motor?hsLang=fr)

In order to do so: you need to ask yourself one question: at which time do I need a torque? Is it the nominal torque, the starting torque or the stall torque I am interested in ?

You need to know the starting torque if you are for example in the case of hoisting application  (a hoist or a winch which need to lift heavy loads from the start).

You need to know the stall torque if you need your motor to stop when hitting a certain torque. For example, for any tightening applications where the motor stops automatically when the piece is screwed.

As you understood, figuring out if you need a starting torque, a stall torque or even a nominal torque is crucial and not always easy. If you are not sure, you can [contact us](https://offers.modec.fr/en/contact-us?hsLang=fr) via our website or by phone and we will know how to advise you and if needed, land you motors for trials.

[-> GO TO STEP 1: Ascertain the operating environment of an air motor](https://blog.modec.fr/en/choose-the-right-motor-in-three-easy-steps-step-1-ascertain-the-operating-environment-of-the-motor?hsLang=fr)

[-> GO TO STEP 3: Ascertain the necessary power of an air motor](https://blog.modec.fr/en/choose-your-air-motor-in-three-steps-step-3-ascertain-the-necessary-power-of-an-air-motor?hsLang=fr)

[Voir l'article complet](https://blog.modec.fr/en/choose-the-right-air-motor-in-three-easy-steps-step-2-ascertain-the-torque-of-an-air-motor)

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