## How do I calculate the torque required for linear motion?

## How do I calculate the torque required for linear motion?

(OP)

Hello everyone,

I need a motor for my project, but I´m not quite sure if my calculations are correct.

I need a motor to move a 500 kg horizontally (linear motion), where the friction constant is 0.8. The speed should be around 0.3 m/s

To calculate the force required to move the object:

F = m * g *u , F = force, m = mass of object, g = gravity constant, u = friction.

F = 500 kg * 9,82m/s2 * 0.8

F = 3924 N to overcome the frictional forces.

Calculating the motors torque:

T = F * d, where T = torque, F = force, d = radius of wheel

T = 3924 N * 0.101 m

T = 396.324 Nm

Are my calculations alright? Since the torque calculated is the torque that will be needed to overcome friction i will obviously need a little higher torque to account for acceleration.

Will selecting a motor of 420 Nm be alright? with 4 motors I would need 105 Nm motor for each wheel.

Do i need to use a gearbox motor for this purpose? Kindly correct me if I did any mistakes in the previous steps, and how to approach this forward as well. TIA

Kind Regards,

Khuzaim Khan

I need a motor for my project, but I´m not quite sure if my calculations are correct.

I need a motor to move a 500 kg horizontally (linear motion), where the friction constant is 0.8. The speed should be around 0.3 m/s

To calculate the force required to move the object:

F = m * g *u , F = force, m = mass of object, g = gravity constant, u = friction.

F = 500 kg * 9,82m/s2 * 0.8

F = 3924 N to overcome the frictional forces.

Calculating the motors torque:

T = F * d, where T = torque, F = force, d = radius of wheel

T = 3924 N * 0.101 m

T = 396.324 Nm

Are my calculations alright? Since the torque calculated is the torque that will be needed to overcome friction i will obviously need a little higher torque to account for acceleration.

Will selecting a motor of 420 Nm be alright? with 4 motors I would need 105 Nm motor for each wheel.

Do i need to use a gearbox motor for this purpose? Kindly correct me if I did any mistakes in the previous steps, and how to approach this forward as well. TIA

Kind Regards,

Khuzaim Khan

## RE: How do I calculate the torque required for linear motion?

Cheers

Greg Locock

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## RE: How do I calculate the torque required for linear motion?

Keith Cress

kcress - http://www.flaminsystems.com

## RE: How do I calculate the torque required for linear motion?

TTFN (ta ta for now)

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