Drive Motor Sizing Tool | RobotShop Community

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@Yogesh Patel The Sizing Tool is to give you an idea of the motor specs you need; if you found that’s the output and the input values are accurate, then the choice is yours.

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sir i am doing 8 sem engineering i am designing a vehicle that vehicle contains 25kg. which motor, battery and solar panel requires. I am fully confused please give me a suggestion as early as possible.

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@Santhosh K V We encourage you to use the tool to get an idea of the torque and RPM you will need, then use that data to search for a brushed DC gear motor on RobotShop.com Unfortuantely we do not have a wide range of solar panels at this time.

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i want motor sizing for a servo motor for a rack and pinion system…only linear…load will lie on rack and pinion to servo will traverse load left to right…load is about 1.3-1.5 kgs…12v,.46 Ah battery, the rack and pinion system will raise to an angle occasionally…and when increasing angle the load has to move left…this is total situation…btw this tool and your comments are all really helpfull…really…keep up the gr8 work…thnx

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How calculate power of DC motor when rpm is given

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@Sangmesh If only the RPM is provided, that is not enough information to calculate power.

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@dheeraj Unfortunately the calculations for your application are beyond the scope of this article.

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is total mass of the robot considered with assuming all motors
mass?

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@Varun Yes, the total mass needs to factor in all motors, frame, battery, electronics, paylaod etc.

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sir, i want to know my motor specification for my application. i want to build lifter project using two sprocket as wheels and one power window motor. regarding my motor as a lifter actuator, should i put 90 deg in maximum incline column to get the correct motor? and how do to measure the radius of drive wheel if i use sprocket? i mean, should i measure with the chain included?

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@Hilman We are not sure we understand completely. Can you create a drawing to illustrate what you are looking to create, and then create a new topic on the RobotShop Forum and share this image, and perhaps provide some additional explanation?

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Coleman, please you can explain the formula used for all calculations ?

In my case:

Mass: 13 kg
Motors: 2
Wheel radius: 0.2 m
Velocity: 2 m/s
Incline: 20
Acceleration: 1 m/s2

Thanks
Torque = 78 kgf-cm

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@Ricardo Kemp There is a tutorial associated with the tool which explains the calculations / formula here: https://www.robotshop.com/blog/en/drive-motor-sizing-tutorial-3661

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Hi Coleman. Thanks for the tool. Its really helpful. I couldn’t find (on robotshop) a motor close to what my application requires . Can you suggest what motor(s) would be an option.

Mass: 15 kg
Motors: 2
Wheel radius: 6 cm
Velocity: 1.3 m/s
Incline: 5 deg
Acceleration: 0.4 m/s2
Operating time : 30 min
Thank you for your help !

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@Newbot We get ~200rpm and 123oz-in. The following may be of interest: RB-Sct-620, RB-And-68, RB-And-118, RB-And-136

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can you please suggest the motor to drive the 1kg of material with very less current and voltage ratings.And tell us how to decide to take the motor on that specification

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@Dishanth We would need to know a lot more about the application - do you mean a 1Kg wheeled robot? If current and voltage need to be low, then the gear ratio will be very high and vehicle speed very low.

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Hi

weight 50kg

should we use 50kg or get the mass ie weight x 9.81

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@hugh The field is asking for the mass (Kg, lbs, g), not the weight (N)

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hello sir
i want to rotate wheel of radius about 1.5-ft and my driven gear is also of same radius and my driver gear is 0.16-ft. this means that i need very less torque motor with high speed. So can you tell me what value i should put in upper-bar of “Radius of wheel” so i can exact calculation of motor i need…