“Shut down for maintenance, use the stairs please.”
We have grown accustomed to signs like these in public places like airports, hotels or department stores. The reason for the maintenance or repair shut down is often wear or broken teeth on the main driving sprocket.
The self-lubricating, precision machined Intech Power-Core™ escalator driving sprocket helps to extend the time intervals for scheduled maintenance, is wear resistant, absorbs shock and vibration, and reduces noise for a smooth and quiet ride. They are also suitable for outdoor use as the sprocket material does not absorb moisture and teeth do not break in sub-zero temperatures, when other plastic materials become brittle.
Escalator
Drive Sprocket for Escalator Handrail
Intech Corp's Power-Core™ Blog 