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TORQUE TALK
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Torque Talk
How to Specify the Gearmotor That Will Run the Quietest
How quiet is quiet enough? Where the end-use equipment will be situated often
determines the tolerable amount of noise and vibration in a gearmotor application. Office
machines and medical devices, for example, require quiet, vibration-free operation, while
machine tools and ice dispensers may not. Finding the cure for noise and vibration starts
with understanding the cause. Excitation at the gear mesh is a primary source. It can result
from gear handling damage such as nicks or burrs, meshing errors, shaft deflection or dynamic
bearing loads. Harmonic resonance with gear housings and driven machinery can amplify it.
Sheet-metal housings enclosing overall equipment can act as multipliers and are notorious
culprits.
As an engineer myself, I’ve insisted that the manufacturing processing for
Bison Gearmotors immunize them — and our customers — from any flaws that might create
unacceptable noise and vibration — and that our application engineering staff be sensitive
to the techniques and materials that muffle sound and minimize noise vibration. As a final
quality check, each Bison Gearmotor is sound tested at full load torque after final assembly.
Call 1-800-AT-BlSON for complete product literature
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