Grundfos challenge harmonic drive
grabcad
Harmonic drive ratio- 1:100 (can be increased)Spur gear ratio 1:5This combination has much higher efficiency than combination of worm gears and multiple spur gearsDepending on the assembly requirement 3 spur gears can be used instead of 2 to open up access to mounting holes from the top or size of both spur gears can be increased and cut outs in spur gear will allow bolt installation.
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