[Leo.G (Leo)]

I adapted a DC powered (cable hand controller CR2) old Moonlite CR3 focus unit to my small Megrez refractor (yes, they were made for Newtonian telescopes but only the adapter changes of which I designed and made one). The problem was a grinding noise, on separating the motor and gearbox and cleaning old grease from the gears and putting new high quality grease the grind was still there. I checked the motor on it's own and that is the problem.
Where would I obtain a suitable replacement motor?
I know AliExpress have a huge range of 12 volt motors with gearboxes but I can't find anything based on the numbers on the original motor.
The motor doesn't appear to have a bearing as such, just a nylon washer the non driven end spins on.


The motor has numbers on the case but I can't find information based on the numbers:
RA200275-505K1R
DC12 V 20120523


Usually these motors have specs embedded in the numbering but I can't find any information.


I have contacted Moonlite in the U.S.A. and the gentleman suggested if I sent a photo and details he's sure they have a variety of stepper motors which will fit. That's no good, then I have to rig up a different controller. Hopefully he can provide specifications on the original unit and I can maybe match it up somewhere. The unit has the most amazing gearbox which has me baffled as to why the little motor didn't have a bearing of any type.


EDIT: I can't praise Moolite enough, I've had a couple of emails from a gentleman and while he's suggested several stepper motors will fit it means I have to buy or design and build my own driver circuit, I can but I don't want to. The same gentleman mentioned they were long superseded to switch from direct DC motors to stepper motors he also mentioned he'd have a look around the workshop and could have a spare motor or 2 laying around. That would be so simple and I'm beyond impressed, even if they can't find one.