# Stepper motor torque calculation

You used 8 mm diameter, instead of 4 mm radius, to calculate the torque; You haven't calculated the holding force, which would provide the holding torque required, which can be easily compared against the specification of the stepper motor; I can't see where you obtained the value for axial force of 10 N, from the datasheet of the stepper motor. Stepper Motor Maximum Speed and Power Calculator. Stepper motors are normally used for positioning, and are not known for their speed. This calculator computes the maximum speed of a stepper motor, which is limited by the time it takes for the coil to energize to it's maximum holding current, and then de-energize as polarity flips. a dynamic torque/speed graph for a stepper motor, but even then I'd take that as a rough guide - miss-stepping due to vibration and resonance is really something that you will find by experiment, not by calculation.

Stepper motors need to be powered at high voltage (maybe 24v or 36v or higher) through a proper stepper motor driver board if they are to produce strong torque at higher speed. The voltage quoted on the datasheets is irrelevant - what matters is the coil resistance and the coil current. Jul 05, 2016 · • Calculate speed, inertia of the load, holding torque, acceleration torque and load torque. Include a safety factor in these calculations. • Select a potential motor by consulting speed-torque curves. For more information on torque curves, read FAQ: What is pullout torque and why is it a critical stepper motor value? Remember to match the ... Stepper motor datasheets often contain information about holding torque, and sometimes even graphs of torque at various rotational speeds. However, the manufacturers usually perform these measurements at 24V or higher operating voltages with motor drivers tuned to the particular motor. DC Motor Resource: Motor Calculations, Formulas And Examples. View the Full (Updated) White Paper Now. When selecting a DC motor for an application, or when developing a powered prototype there are numerous calculations and formulas which must be considered to produce a well-functioning, sufficiently-powered, and safe device. Mar 05, 2019 · This video sheds light on defining the measurement of torque put out when manufacturers list it in oz/in rating. If you have any questions, or require a quote please message me at [email protected] ...

@briskspirit said in How to calculate stepper torque?: @deckingman My point is to make Y gantry lighter, so I want to change X motor to lighter one. From 34mm to 25mm body (Also switch to 0.9 degree) That's fine - I'm not arguing with you. Stepper motor datasheets often contain information about holding torque, and sometimes even graphs of torque at various rotational speeds. However, the manufacturers usually perform these measurements at 24V or higher operating voltages with motor drivers tuned to the particular motor.

Mar 05, 2016 · It's quite simple. Assuming that your weight has a moment arm of length "L" metres, the torque would be (1.1 x 9.8 x L) Nm Your stepper motor's holding torque must equal or exceed this value in Nm. This is a continuation of me trying to understand torque and stepper motors in my other question. I'm trying to understand the torque a motor would be required to generate to lift a small weight, and the formulas involved.

Mar 05, 2016 · It's quite simple. Assuming that your weight has a moment arm of length "L" metres, the torque would be (1.1 x 9.8 x L) Nm Your stepper motor's holding torque must equal or exceed this value in Nm.