Choosing a Step Motor Based on Load, Speed and Torque


	Torque-Speed Curves

	Show me examples

	VXM controller

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	High res (0.9º) motors

At this point, you should have determined:

your payload weight,
linear translation speed range
lead screw pitch

If not, go here

From one of the next two graphs, determine the required minimum torque.

Then choose a motor with sufficient minimum torque out to the maximum step rate necessary to reach you top speed. Recheck the step rate - linear speed table to make sure you achieve the desired top speed.
torque vs load for unislide stages

required torque vs load for bislide

Show me Lead Screw Pitch vs. Linear Translation Speed Data

Step Motor Torque-Speed Curves
5 vexta step motors

These graphs display step motor torque vs shaft speed for different motors used with VXM controllers to drive UniSlide, BiSlide or XSlide positioning equipment. Note "Steps/Sec." are for 1.8° motors running half-step mode

or 400 steps per revolution. We also have 0.9° motors. They offer twice the resolution at half the speed. More motor data.

Vexta PK245 motor curve Vexta Data Sheet
Vexta PK264 curve Vexta PK264 motor Vexta Data Sheet

Vexta PK266 curve Vexta PK266 motor Vexta Data Sheet

Vexta PK268 curve Vexta PK268 motor top Vexta Data Sheet

Vexta PK296 curve pk296 Vexta Data Sheet
top

0.9º High Resolution M Series step motors

>>
Our Standard motor:
1.8º stepangle
200steps/rev.

With VXM control 400 half-steps/rev.

<<
Optional hi res motors:
0.9º stepangle
400steps/rev.

With VXM control 800 half steps/rev.
i.e, half the speed + double the resolution

Photo of AMP and Molex motor connectors

More PDF Motor Data*

PK243SG (with gearhead)

PK264M, 266M, 268M

PK296

PK296SG (with gearhead)

Complete Vexta Step Motor brochure (9 meg)

*Note: motor performance with the VXM control may not be identical that shown in the above data. Please call for curves of other motors.
Copyright (c) 2013. Velmex, Inc.