12V dc brushed, 1500 rpm no-load, 1N-m (141 oz-in) 200W 16A at max power. (Max power point torque more important). No really powerful motors come up in my enquiries. I need a planetary geared motor, possibly a small motorcycle starter, if those had actual published specs. duty cycle 5 sec on, 10 sec off typical, 5 mins total use before resting.
1500rpm no load would mean the gear down is likely below 10:1.
Ex: robotshop.com/en/banebots-p6 … rease.html
with: robotshop.com/en/banebots-rs … motor.html
Gives:
1550rpm (no load)
146 oz-in stall
15A stall
Not identical, but close.
Alternatively, we can also offer a 4:1 for 700 series motors
146 oz-in at stall is probably a bit small, if the torque-speed relation is linear.
It would need to be twice that, to develop enough torque at maximum power
(at 1/2 the no-load speed).
Is the 700 series motor spec on those shortcuts? I will check.
I still cannot use your search option to find either of those.
Please supply the shortcuts, thanks.
It doesn’t seem to come up if I search for banebots under dc motors.
I have gotten some good search results now, thanks.
I found RB-Ban-275 and RS-775
What is a good encoder for these? I don’t need lots of pulses, as the mechanism only advances
30mm per rev at the gearbox output. About 4-8 pulses per motor rev should be plenty.
I want to see if I can get positioning accuracy to ± 5mm at the far end, to avoid smacking into the buffer.
What arrangements can I make for delivery? 2 weeks or so to NZ door to door is OK, like the Hong Kong online merchants do. I would be buying 2 sets of gearbox, motor, encoder.
The issue with the 775 is that there is no rear shaft for an encoder, nor can one be mounted at the front of the motor.
robotshop.com/en/rs-775-moto … oz-in.html
The 755 has a rear shaft: robotshop.com/en/rs-755-12v- … motor.html
However we do not carry any specific encoder for this shaft.
Can’t say we have any great options for you at this time.
I am working on using the motor in a linear actuator. I have found a way to use a smaller motor
at a higher gear ratio, so may not need speed control, relying on an upper limit switch instead.
A self-contained dog clutch assembly would be handy, though, so I can use gravity drop, and
powered lift, of the arm concerned, and get two different speeds that way.