converting 1/2" drill motor to sprocket system
converting 1/2" drill motor to sprocket system
(OP)
I have a 1/2" 450RPM 4.5amp drill motor that I use to raise and lower my antenna tower. The drill motor drive a 50:1 gear winch. I want to make a sprocket system using a 115volt frame motor. Any suggestions on motor size and sprocket size would be appreciated. The torque required, which I don't know, is about the max for this 1/2" drill motor.
Thanks,
Jim
Thanks,
Jim





RE: converting 1/2" drill motor to sprocket system
Or you could affix an adapter to the gear winch and measure the torque the gear winch requires; presumably you are going to still use the gear winch. Any reason you prefer a sprocket and chain?
Once you know the torque the winch requires and power (speed of operation) you can pick a motor and matching gear ratio. They are tied together so it's a chicken and egg problem. The higher the speed for a given power, the greater the gear reduction will be required, but also the reaction forces on the motor will be lower.
You might noodle over some choices at https://www.grainger.com/category/general-purpose-...
Umm - what are you planning on doing to reverse the operation? Some motors are reversible but it requires a separate control on single phase.
RE: converting 1/2" drill motor to sprocket system
Thanks for your time. I'll update if I can find more info that you ask for.
Jim
RE: converting 1/2" drill motor to sprocket system
At 450 RPM the output torque of the drillmotor is T = HP x 63025 / 450 RPM = 101.4 lb-in
Based on an assumed 1750 RPM motor, it looks like a US Tsubaki RS25 (0.25 inch pitch) 20 tooth driver and 80 tooth driven sprocket would provide a little better than 1.5 service factor and provide a 4:1 reduction to match the drillmotor output speed. Caution to know the overhung load rating of the motor you select. You might overload the bearings with a chain drive, especially if over-tensioned.