temperature effects

Reprint of Danielle Collins post, Linear Motion Tips, on Friday, December 11, 2015

As an integral part of industrial machines and processes, ball screw assemblies often operate in environments with elevated temperatures. Heat can be generated by other mechanical and electrical components in the machine, and in some cases, is a byproduct of the process itself. And, like other motion products with sliding or rolling friction, ball screws generate heat of their own as they run. This heat, and especially the change in temperature that occurs over time, can have a detrimental influence on the screw’s function. But there are ways to mitigate heat and reduce its effect on life and accuracy.

Operating temperature recommendations for ball screw assemblies vary among manufacturers, but the typical upper limit for the most common ball screws is 80° C for short, instantaneous exposure, and 50° C for continuous duty. For standard annealed screws, a temperature over 100° C can cause a decrease in tensile...

When applying DC motors to any type of application, temperature effects need to be considered in order to properly apply the motor.  Performance will change as the motor temperature changes.  When reviewing DC motor curves, the user needs to ask the question “Do these curves represent performance of the motor at room temperature, or do these curves illustrate performance at the maximum rated temperature?”  Depending on the temperature and the required operating point on the motor curve, the performance difference between “cold” and “hot” conditions can be significant.
Click on the link below to download this White Paper.
https://www.engineeringwhitepapers.com/companies/haydon-kerk/temperature-effects-motor-performance/
 
Tags:  Motor Performance, Servo Motor, BLDC Motor, Electric Motor, Temperature Effects