Water roller bearing damage phenomenon of case analysis

Zhejiang printing center of newspaper group currently has seven SSC for web offset printing production line, one of the 2 lines by four paper planes, three towers and 1 folding unit, installation and debugging, at the end of 2000 in March 2001 formally put into production. By another 5 line 2 paper planes, 2 and 1 folding unit, in September 2003 installation, put into use at the end of 2003. In general, the usage of SSC production line is very good, but the rubber roller rotation structure, seal and the special specifications for the selected bearing, brought inconvenience to daily use, also increased the cost. 5 mm, belong to non standard parts, inner diameter and thickness is the same as domestic standard bearing of 6004, when the purchase price in 320 yuan. If use good water roller, Gu about 3 months of life; If use less water roller, the service life of the shortest only 7 days. The problem from the water roller bearing damage analysis, found that those roller structure exist the following problems. ( 1) The high cost. Imported bearing 88 y0043c3 too expensive, as long as the replacement value? 0 yuan spindle, 88 y0043c3 available domestic standard bearing 6004 completely replace. ( 2) There is something wrong with the seal. Water roller, in particular, there are part of the shaft end need liquid immersion education version, when the education version liquid PH value is less than 6, bearing will soon be corrosion, ball can't normal running and eventually lead to bearing rust and ran inside and outside the circle, serious when rubber roller ontology, bearing, spindle all scrap. ( 3) The axial force of the topic. Except for education version fluid invasion of corrosion damage, Gu ChengHai will appear 'apart' phenomenon, namely the ball bearings from the 'basket' scattered to the roller, the plate cylinder and rubber roller, rubber roller surface such as severely damaged. The solution, 1) Homemade spindle, adjustable size, with domestic standard bearing 6004 replace the imported bearing 88 y0043c3. ( 2) Modify the rubber roller ontology, set up reliable sealing structure, in order to prevent the education version fluid in bearing. We use 5 SSC production line, Shanghai gaussian company is according to our drawings of the above two problems is improved. ( 3) Decomposition 6004 ball Gu bearing axial force, a group, namely the increase of shaft end thrust bearing of 51104. At present, we are still in gradually to all SSC production line of rubber roller shaft end structure was improved, from the use of the improved roller, the effect is very crafty. Now, both use water roller and ink roller, as long as the surface there is no problem, shaft end structure, bearing, there is absolutely no problem, and we can use for a long time. Through the improvement, in a life cycle ( Printing 10 hours a day, usually a rubber roller 6) Life is about 1 year) , even when you replace the rubber roller bearing all new, also can save 600 yuan. We have 16 tower printing center, and each tower has 48 root rubber roller, a rough calculation, after the improvement, one use cycle can save more than 40, ten thousand yuan for the newspaper.