Motors used to be heavy duty and repairable.
You could replace the brushes, bearings and even get the armature rewound.
They are using throw away, junk motors in equipment these days. They expect paper shredders to fail and need replacing.
This is the most common failure for paper shredders. Today’s cheap motors aren’t repairable.
New motors are $10 from China. A rewinding shop charges $20/hour and you have to be able to disassemble the device and deliver them the motor then pick it up after repair.
Which approach *really *makes sense?
Paper shredders are difficult to dispose of. Their cabinets are so big and unwieldy. I had one sitting on my curb two weeks waiting for pickup.
I wish the inexpensive motors could easily be replaced.