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Thank you for the suggestion. However, our torque requirement reflects the weight load on the next level product and it related to the current limit and speed requirement per Acceptance Test Procedure. Increase in torque will increase current and reduce motor speed. It has to be balanced...

It is true that to enforce disc by adding additional material might help to reduce deformation. I might have to open it and make a measurement for changes. A force air cooling is probably a good choice. Thanks a lot for information. Harry

I do have a external air blower for cooling but it not enough. The speed of motor is about 14000 rpm max. With load, it is about 6000 rmp. Thanks Harry

Hello Stone; The thickness of disc is 1/8" with 7" dia. It is a flat disc. Compare with other dynamometer, the inner portion of disc should be thicker than outer portion to prevent the deformation. Since this is an old self designed machine, there is no room for the changes and there is no...

Hi Cory; The heat is generated by magnetic force. I did not measure the heat temp. but by touching the body of dynamometer which has a coil installed in the metal case. In general, soft magnetic alloys are materials that can be easily magnetized - thus exhibiting high permeability - and just...

What type of metal is suitable for the dynamometer? I have a "self" designed dynamometer for testing our motors; it allows me to load up to 36 in-lb torques. Currently, the metal disc used in the dynamometer is a low carbon steel 1018 and it might too soft. As a new requirement of 48 in-lb...

Thanks, Cory! I will measure how much torque force applied to the screw to reduce the shearing force. Thank you again. Harry

I have experienced the paint chipped off at the upper edge of countersink of Alu. enclosure after few times screw & unscrew during installation. The metals were with fine brushing & clear iridite treated before painting process, and the paint was cured at 140 Celsius then fine textured, the...