Sheet-fed main drum support bearing technical details - bearings, bearing technology, needle roller bearings - metal industry

Sheet-fed main drum support bearing technical details - bearings

, bearing technology, needle roller bearings - metal industry

Sheet-fed offset press the superiority of its structure, is increasingly becoming the main printing machinery products, while demand for print quality is also increasing. Domestic manufacturers are also offset from the original monochrome machine, two-color machine production to the four-color machine, multi-color machine development. Sheet-fed offset press for each color set mainly by the plate Roller , Rubber roller, pressure roller, transfer roller, and other system components inks and accessories. Master cylinder directly affects the functioning of precision printing quality is good or bad, whether the cause for the overlay, textured, colored inequality has a direct relation. Domestic and foreign well-known printer manufacturers for precision operation of the main drum of the increasingly high demand. The main drum support Bearing Plays a vital role, in order to improve quality and increase the printer greater added value, many printer manufacturers are the requirements of bearing all costs.

With the historical development of sheet-fed offset press, the main drum bearings have gone through many changes. From the earlier brass bearings to roller bearings, needle roller bearings to roller bearings from, from a single bearing to the bearings, bearing rings from the two-to three-ring eccentric bearing. Increasing the precision roller bearing, the installation more convenient and more simple to maintain.

1. Needle roller bearings Needle roller bearings because of their small diameter rigid and better than a lot of tapered roller bearings, and bearing dislocation developed double row needle roller bearings with its rigidity comparable to copper bearing sleeve. Compared with ordinary needle roller bearings, used in printer support for needle roller bearings needle group than the normal high. Ordinary needle roller bearings as a unit block to 2 m, and the printer use the needle as a unit block to 1 m. Thus, by selecting the appropriate needle group, you can make the work of bearing clearance is less than 1 m, the operation of this precision is required of high-quality printer. And the printer can use the needle group than the normal needle bearing packet group more so for the wall of the processing requirements can be reduced naturally.

2. Roller bearings The use of needle roller bearings, printer manufacturers are still making trouble on the need for high precision coat, and the need to install the experienced needle workers find the right group. To solve this problem, bearing manufacturers have developed integrated flange roller bearing outer ring support. Roller bearings can be preloaded to achieve good accuracy and rigidity. And can also use the inner ring with a taper to be adjusted bearing clearance work. Such solutions, printer roller bearings can achieve zero clearance requirements. And the outer ring with flange for the printer manufacturer to resolve the installation and lubrication problems. MAN Roland, Heidelberg, gaining more than Japan and domestic North's extensive use of the bearing model. The roller bearings supporting the program has become a printer in the roller support of the mainstream.

3. Integrated unit And automotive and other industries, printer manufacturers also need the same precision as the bearing supplier to provide a more simple factory assembled modular components to reduce errors and time, reduce rework, thereby enhancing efficiency and reduce costs. To meet this demand, the main roller bearing manufacturer to provide a more accurate support, installation, maintenance, support a more simple drum unit. If developed ring eccentric bearing bearing units. The bearing unit integrated bearings and eccentric, not only has the role of supporting rollers, roller clutch, and can realize the function register. Its superiority has been widely accepted by printer manufacturers.

KBA, MAN Roland and Heidelberg's new models models, have been at the plate cylinder or rubber roller bearing units use this. In the old model of remodeling work, this ring has become the preferred bearing support. There is no in performance, installation, maintenance of the bearing unit better than this program. And its labyrinth seal and the use of cylindrical rollers, it can be lubricated, it can be greased, and maintenance-free life. Excellent bearing lubrication also makes this the longest life expectancy in various programs. It makes the printer manufacturer's requirements from its own precision machining, installation of the line moved to the production of products bearing bearings and other precision production line. This is also consistent with modern intensive industries. Main drum support for the printer above the various solutions. Accuracy requirements of its own printer, rotary and linear movement of the support pieces have high demands. Above solution can solve the internal printer manufacturers to develop their product needs more features.

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