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Below table show working temperature for stepper motor. JVL motors use better components and ball bearings than Chinese motors. MIS34x and MST34x use same raw stepper motor with class B (130 ºC / 266 ºF) and have same performance. Because MIS34x have internal controller PCB are the working temperature lower than the non integrated stepper motor MST
Temperature defend on dutycycle and current etc so you can only find the limit by testing it.
MST23xB02 (2)
MST34xB02 (2)
Stepper motor

Integrated stepper
Motor Outside max temperature
100 ºC / 212 ºF
Typical 65 ºC /149 ºF (1)
Motor Inside max temperature
130 ºC / 266 ºF
Typical 95 ºC / 203 ºF (1)
Electronics max temperature before closing down
85 ºC / 185 ºF
Motor class
Class B which is 130 ºC /266 ºF
Class B which is 130 ºC / 266 ºF but electronic close down at 85 ºC /185 ºF
Outside motor surface temperature can be 100 ºC / 212 ºF that correspond to inside temperature of almost 130 ºC / 266 ºF.
Stepper motors can be quite hot and work for years also at 100 ºC / 212 ºF surface temperature.
MIS motor use industrial grade components but close down if internal PCB temperature exceed 85 ºC / 185 ºF.
(1) Can be higher but depend upon dutycyle and motor current etc so to find the exact temperature will it demand a test to see when the internal temperature exceed 85 ºC / 185 ºF.
(2) For OEM order above 25 pcs. we offer a high temperature motor class E that can handle inside motor temperatue 180 ºC / 356 ºF and outside motor temperature 150 ºC / 302 ºF. This is done by changing grease in bearing and change insulator material to paper instead of plastic.  


JVL's latest News
Updated: 20/11-2018
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New NEMA23 Integrated Stepper Motor (MIS23xQ/R/S/T)

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New NEMA23 Integrated Stepper Motor (MIS23xQ/R/S/T)

NEMA34 86mm Integrated Stepper Motor Linear Actuator

Below versions can be delivered
  • Non-Captive linear actuator with nut inside motor.
  • External linear actuator. Nut are mounted on lead screw.
  • Captive and External linear actuator can be delivered with integrated driver or controller.

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MIS340-MIS343 QuickStep - NEMA34 Programmable Integrated ServoStep Motors with Closed-Loop, Ethernet, multiturn encoder

MIS340-343 QuickStep - Integrated Stepper Motors.
QuickStep, the Integrated Stepper Motors from JVL. A wealth of possibilities in a series of of the world´s most compact stepper motors with the higest microstepping resolution. 4 sizes are available. From 3Nm to 12Nm


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