Help selecting a DC motor, linear actuator for syringe pump

Help & Support Robot Parts
1

Hello! I am a newbie so bear with me.

I would like help in selecting a DC motor and gearbox for linear motion conversion to a lead screw.

I’m building a pump for a large syringe (170mm) and would like to build a system or buy a linear actuator with feedback control to monitor position and speed.
The primary objective is to create a steady, continuous flow rate from the syringe so a DC motor (with encoders) is preferred.

Some parameters: a 12 V motor is ideal, the load is < 20N, and it requires a low max travel speed (~0.005 m/s)

I was looking at this: robotshop.com/en/p16-linear- … dback.html
but noticed that it doesn’t have any encoders (maybe I can add them?).

Any feedback would be very appreciated!

2

On RB-Fir-147 the potentiometer would be the sensors which provides the position in real time.
You would monitor position over time to calculate the speed.

3

I have infusion drives, they use a stepper motor and leadscrew. That could also work for you. Mine have NEMA 34 (older) pancake style 48 deg steppers driving a recirculating ball 3/8" screw. Limit switch on one end.

Alan