Shredder Drive

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Calculations

  • Largest force comparison- 15,000 in lb or 173 kg m.

Shredding Rate

  • Precious plastic shredder - what is shredding rate of precious plastic shredder? 3kw, 50kg/hr. [1]
  • By comparison, we have 5W steppers. Minebea_Stepper_Motor_Specs
  • This allows us for 3000/5=600x less throughput. This means that for 12 hour run time, we get 1 kg of shred.
  • This is minimal, but doable for production.

First Order Shaft Torque Calculations

Motor Torque

Geardown

Belt Geardown

Gears

Planetary Gears

Motor Choices

  • Brushed motor is 75-80% efficient. [2]
  • We can try a small DC motor, 30W. This yields a theoretical 12 kg per 12 hour day grind rate, which is just about correct. [3]
  • Ex. JYCRS390H - [4]. Not 30W. Appears to be 5W - [5]

See Motor Selection Criteria

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