choice motors gear

[shinobi9]

Good evening,
I would need to rotate a load of about 40 kg (a rod) of 90 degrees in about 5 seconds.
I thought I'd use a gearmotor connected to a tree and that tree solidly connect the shaft so that the shaft rotates too. However, having to turn 90 degrees in 5 seconds I have a rotation speed of the shaft equal to 3 rpm.
I think it's very low and I wanted to know what kind of gearbox could be applied. I have considered that for couples in play I would need a couple (at the exit of the reducer) of about 350 nm.

 

[meccanicamg]

If you have to turn to 3rpm out and want to mount a 4 pole motor you will make an i=1450/3=483 report.
you have basically two options: epicycloidal reducer or endless screw/corona.
if you need 350nm at the exit, they become about cm=350/483=0,72nm. taking into account for a vsf a performance of about 60% we obtain a motor that must provide cm=0,72/(60/100)=1,2nm....0,18kw.

on the red catalogue gearboxes for example makes select the vsf with 6-pole engines that turn to 900rpm then the reduction ratio will be adjusted to get 3rpm out.

then you have to evaluate whether to mount motor with brake or not. see whether to mount encoder in the engine or on the output gearbox.

I attach the version with ie2 motor without brake. the gear motor is a precouple with parallel axles and an endless screw, all in one. as you will see with performance 50% but 6poli motor, different ratio eventually get almost 3rpm to 365nm.

 

[meccanicamg]

on the red site reducers, there are no standard epicicloidali selectable.
the alternative is the parallel axes, with greater yield.
always with 6poli motor. with this reducer that has a higher performance you have available multiple output torque, more than 500nm. here or get out of the engine or hold the margin.

 

[TETRASTORE]

if the rod you describe is comparable to a barrier, such as those of the highway tolls or the carrai passes whose movement is limited to angular rotation of only 90° with departure from horizontal position and distributed load, remaining the solutions @meccanicamg I would add the following considerations:
- the 6-pole engine solution with brake is recommended by choosing a lower ratio;
- you must also evaluate the inertia when braking down to the maximum torque (horizontal position);
- assess the service factor according to the number of interventions/hour;
- consider that in your case it will work, with differentiated wear, only 1/4 of the teeth; of the final gearing, but the unfinished screw proposed with a screw-crown reduction ratio of 25/1 has a tooth module that, in this case, guarantees a certain reliability unlike, for example, a higher ratio;
- structurally, if the load is distributed uniformly, there is no problem for the proposed reducer; If you opt for an alternative of cheaper reducer with aluminum carcass, especially if it is in the flangeed version or with feet, you should ask the manufacturer if it approves your type of fixing.