Stepper motor Not rotating freely
- Dinuka_Shehan
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22 Jul 2019 15:05 #140183
by Dinuka_Shehan
Stepper motor Not rotating freely was created by Dinuka_Shehan
Recently get a Old step syn nema 23(Made in Japan)stepper motor.
One of my nema 23 stepper motor is so tight and cannot swing it with my hand too tight(chucked with 3 jaw chuck and can swing it with hand).I think it will burn my stepper driver with this condition.
I open the covers and check where is the problem.
Bearings are good and inspected my dad who is experienced 30 years of manual all round machinist.
Once I attached the rotor with stator without bearings it binds.
I machined to reduce diameter of rotor few hundreds of mm.
but no 100% good.now it can rotate it by pliers and sometimes with hand.
Can I work with this or should I replace another?
One of my nema 23 stepper motor is so tight and cannot swing it with my hand too tight(chucked with 3 jaw chuck and can swing it with hand).I think it will burn my stepper driver with this condition.
I open the covers and check where is the problem.
Bearings are good and inspected my dad who is experienced 30 years of manual all round machinist.
Once I attached the rotor with stator without bearings it binds.
I machined to reduce diameter of rotor few hundreds of mm.
but no 100% good.now it can rotate it by pliers and sometimes with hand.
Can I work with this or should I replace another?
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- tommylight
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22 Jul 2019 15:24 #140187
by tommylight
No you can not, the stepper motors should not be opened, they will loose the magnetic field while you are getting the rotor out, so it will not have any torque any more.
You can open ONLY the back cover without destroying it.
Replied by tommylight on topic Stepper motor Not rotating freely
Can I work with this or should I replace another?
No you can not, the stepper motors should not be opened, they will loose the magnetic field while you are getting the rotor out, so it will not have any torque any more.
You can open ONLY the back cover without destroying it.
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- Dinuka_Shehan
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22 Jul 2019 15:29 #140190
by Dinuka_Shehan
Replied by Dinuka_Shehan on topic Stepper motor Not rotating freely
How to count steps of stepper motor without opened?
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22 Jul 2019 15:30 #140191
by Dinuka_Shehan
Replied by Dinuka_Shehan on topic Stepper motor Not rotating freely
To know 1.8 degree or another one?
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22 Jul 2019 15:32 #140193
by Dinuka_Shehan
Replied by Dinuka_Shehan on topic Stepper motor Not rotating freely
Any technical data or proofs do you have about this?they will loose the magnetic field while you are getting the rotor out
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22 Jul 2019 16:57 #140201
by tecno
Replied by tecno on topic Stepper motor Not rotating freely
Please ask GOOGLE your questions and you will find many answers.
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22 Jul 2019 17:11 #140202
by tommylight
They are magnetised after they are put together in the factory, so fully assembled.
Replied by tommylight on topic Stepper motor Not rotating freely
Yes i do, two motors with no torque.
Any technical data or proofs do you have about this?they will loose the magnetic field while you are getting the rotor out
They are magnetised after they are put together in the factory, so fully assembled.
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- Dinuka_Shehan
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23 Jul 2019 17:42 #140328
by Dinuka_Shehan
Replied by Dinuka_Shehan on topic Stepper motor Not rotating freely
How to calculate number of steps of stepper motor without removing the covers?
Note there are no label or markings on this motor.
Note there are no label or markings on this motor.
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23 Jul 2019 18:10 #140337
by tommylight
Replied by tommylight on topic Stepper motor Not rotating freely
Attach a 20 to 30 cm stick with glue to its shaft so you can actually measure the angle it moves.
Or make a line in the shaft and body of motor and try to count the steps while slowly rotating the shaft.
The first is more precise the longer the stick.
Or make a line in the shaft and body of motor and try to count the steps while slowly rotating the shaft.
The first is more precise the longer the stick.
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