View Full Version : How to connect to FIRST CIM Motor (M4-R0062-12)?

07-14-2011, 02:08 PM
I just got a couple of these motors:


And I'm now realizing I need a way to "connect" something to the spindle of the motor shaft!

It has a little groove on the shaft. What kind of part would connect to this thing? I would like to make a pulley out of the motor, so that the motor can wind a string and/or wire. If I could also connect a wheel that would be cool.

Any suggestions? Thanks all!

The Space Cowboy

07-14-2011, 02:35 PM
Check out Andymark.com. They have a bunch of stuff that you can connect to those motors. You can also try Mcmaster...

07-14-2011, 03:24 PM
Interesting. I'm browsing around to see what I see.

What am I looking for? Isn't this a standard thing, where you would need to connect "something" to the driveshaft of the motor? I almost wonder what the motor was built for in the first place and how it was designed to interface with something.

Would this piece be considered a "hub?"

Would Trossen Robotics have suggestions since they sell the motor?

07-17-2011, 09:27 PM
The CIM motor spins at ~5000 RPM at its free speed, so you will most likely need to gear it down somehow. Check out Andymark.biz, they have lots of gearboxes. The shafts usually have a spur gear pressed onto them. you could also put a timing pulley on it. the original application of the motor was a boat jack, but it sort has become the staple motor for FIRST drive trains.

07-18-2011, 04:13 PM
I cannot tell you how much these simple references have helped me.

I just learned about what "spur gears" and "timing pulleys" are. Also, the andymark.com website helped tremendously.

It looks like I need a "machine key," something like this:

along with a "gear," something like this:

to get my motor to interface with something else.

You may take it for granted, this learning curve, but it sometimes take a while to connect the dots.

Thanks for the help!
-= The Space Cowboy =-