Hi desertfox
Both DE and NDE bearings are the same, size 6322, described in the SKF Manual as Deep Groove Ball Bearing single row,with width of 50mm and outside diameter of 240mm. The approximate distance between bearing centers is 1000mm, it was a frame size 355 motor.
The pulley width is...
Thanks desertfox for helping me out about the discussion and thanks all for sharing the information, I try to learn as much as i can from this thread and its a whole lot!
Sorry for the delay in posting more details,
shaft diameter where pulley is mounted : 100mm
shaft diameter where bearing is...
This a pic of the rotor side, the bearing is against a shoulder. The motor that broke was a spare motor we installed when the original motor was due for bearing replacement. When we transferred the pulley to the motor, there was a minute clearance, as we observed that the pulley was too easy to...
ive located the broken shaft and took pics,it was a clean break rather than a rugged one, sorry for the error. Thanks for the info.http://files.engineering.com/getfile.aspx?folder=087425aa-6465-4662-8f8c-87cd32196065&file=Motor2.jpg
Thanks for the valuable info and references you all gave.The motor was belt coupled to a clutch driven flywheel, which allows it to run freewheeling with the flywheel when material extrusion is stopped.The shaft was broken right behind the drive end bearing, inside the motor itself and it was a...
We had experienced a broken shaft on our 280 KW,SQIM while it was running under load. We dont know what was the real cause,as it was within its nameplate values and the OLR did not trip. Can anyone please give some hints of possible causes of broken shafts for large motors? thanks a lot.
