The Electronic Goldmine has several motors that might work, G 17949, & G18120 under 4 cm dia with heafty output shafts. Believe shaver, old one, used 5 AA Ni-Cd's for 6 V, +-. If you have a charger might go for Ni-Mh giving roughly 2 to 3 hours run time. RPM is much more understandable than verry slow. Is there any load on the rod? Not part of a wench?

OMG thank you for that site.....

 

OMG thank you for that site.....

Oh, yeah, spent HOURS sifting through that site

 

Not part of a wench?

Wenches aren't necessarily very heavy, unless you need to winch your wench.

 

Wouldn't a battery powered electric drill do the job?