taper roller bearing failure taper roller bearing failure 1234910 (Mechanical) (OP) 22 Jun 16 07:19 we had taper roller bearing used in entry guide roll failed as shown in photograph, entry guide roll too has broken from one of it's collar . do suggest possible reasons. http://files.engineering.com/getfile.aspx?folder=f5637878-24df-4f0d-8b6a-66 RE: taper roller bearing failure jgKRI (Mechanical) 22 Jun 16 15:17 The center of the three bearing shown in your photo appears to be heavily corroded. I'd start there. RE: taper roller bearing failure Compositepro (Chemical) 22 Jun 16 21:17 It looks like the roller and bearings wore-out until they broke-up. Lack of lubrication and impacts could also be factors. RE: taper roller bearing failure gearcutter (Industrial) 22 Jun 16 21:27 Your images are so poor in quality that I can't tell if the red/orange is grease or corrosion. RE: taper roller bearing failure 1234910 (Mechanical) (OP) 23 Jun 16 03:44 red/orange is corrosion. RE: taper roller bearing failure RolMec (Mechanical) 23 Jun 16 05:48 from the pics, assuming as per comments: - the roller got seized up, the bearing was not turning (properly) - environment is heavily corrosive or maintenance is poor ... to scarce - the roller was due to be changed The material of the roller is probably (your input?) a quite hard but brittle material, and from the fracture an impact event could be reasoned (your input?). From the corrosion of the fractured surfaces the presence of heat or water or both could be reasoned (your input?) Is this from some aged steelhandling factory? RSVP RE: taper roller bearing failure tbuelna (Aerospace) 26 Jun 16 04:24 Based on the photos provided, the guide roller looks in far worse shape than the tapered roller bearings. It would be very helpful if you could provide a sketch of the guide roller and bearing installation. Including the outer races of the tapered roller bearings. RE: taper roller bearing failure tbuelna (Aerospace) 28 Jun 16 06:43 One other question. Normally, tapered roller bearings are mounted in pairs. But your attachment shows a set of three tapered roller bearings. Were a set of three tapered roller bearings used to support this guide roller? RE: taper roller bearing failure RolMec (Mechanical) 30 Jun 16 05:43 Hello tbuelna, I've seen your input on that other thread of the OP, so you took an interest to this very intriguing but alas disappointing train of tech. issues.. It would have been so simple for the OP to give at least some of the feedback he/she was ASKED for, but no, or almost. Perhaps not yet.. Btw. it was on 25th that he/she was last seen on the forum, so hopefully there's not a more serious breakdown. Three tapered b.s, I never encountered something the like of it, tapered b.s in pairs, that's the usual way. Question well put. But then have a look at this one post of the other thread about the broken shear pin (with the pictures of the equipment in question): Imo it is to be concluded that the machinery & equipment is rather old / "experimental" / of faraway origin or else. Regards R. But I'm not sure anymore whether it's the right thing to help to cure symptoms! Because part of the picture of that other post / thread speaks to me that some of the common rules applicable in the industry might not be followed here, and thus by curing some symptoms a big event might be the next thing to come! Feedback is most welcome, thank you in advance!