procedure to replace spindle belts?

[coop31]

I have been having some noise in the spindle when roughing and drilling, so I decided to take it apart today to see if I could spot the problem. Turns out one of the belts is broken, and the other one doesn't look the greatest either.

So my question is, does anyone have the procedures on how to change the belts? When I purchased the machine I didn't get any books with it.

The new belts should be in my hands early tomorrow.

Thanks..

[slowlearner]

All the info is here on the forum to change the belts. I did this back in Jan. of this year to my 3 cincy's. Iirc it takes about 2 hrs to do one machine. If you have trouble there are several very experienced members that are regulars here.

[laka]

Like slowlearner said, it is fairly straightforward. Need to remove all the guards etc, loosen the motor and slide it forward to remove and install new belts and tighten her all back up. Take a paint pen and place some timing marks on the spindle and motor so you at least get the toolchange orientation in the ballpark. You will need to adjust the orientation afterwards to fine tune it so you dont have any issues with toolchanges. Don't forget to do this! Depending on your software version you can do it on the control, or you may need additional software.

[Asankavithanage]

no problems, first one you remove another two belt and adjusted motor to near the spindle, so you can insert belt one by one and after adjust the motor re point ,
ok

[coop31]

Like slowlearner said, it is fairly straightforward. Need to remove all the guards etc, loosen the motor and slide it forward to remove and install new belts and tighten her all back up. Take a paint pen and place some timing marks on the spindle and motor so you at least get the toolchange orientation in the ballpark. You will need to adjust the orientation afterwards to fine tune it so you dont have any issues with toolchanges. Don't forget to do this! Depending on your software version you can do it on the control, or you may need additional software.

Don't I need to disassemble something on the spindle itself? I don't quite see how I will slip the belt on or off with out taking something apart.

[coop31]

Okay guys, I think Ive got it. I sent an email over to Mike at CNC Machine Services and he ever so kindly sent me the write up on what to do. I had it tore down in about 15 min and now I just have to wait for the new belts to show up.

[mike_Kilroy]

If mike at cnc services has been real helpful maybe when u get past the rush of the fix you can share his contact info here for others too?

[coop31]

Was actually a quite easy job to replace the belts. I marked the motor pulley and spindle before I tore it apart, and luckily I got it back together in the correct location so I didn't have to mess around with the spindle orientation.

I not going to put all of Mikes contact info on here, but his website is HERE if anyone wants to get in touch with him.