Installation and Commissioning of Printing Rubber Rollers

When installing rubber rollers, the shaft ends and bearings must be well-matched to guarantee required precision and cleanliness. Handle the rollers with care. Avoid collisions between the roller body, shaft ends and rubber layer to prevent roller deformation and rubber surface damage.

The shaft ends and bearings of rubber rollers shall be properly lubricated at all times. Insufficient lubrication will cause wear and increased clearance of shaft ends and bearings, resulting in uneven ink distribution in printing. Problems such as roller runout and slippage will also lead to printing streaks.In long-term continuous operation, inadequate lubrication will further heat up bearings and roller shafts. The rubber surfaces at both ends of the roller will expand due to heat and friction, developing pits, rubber peeling and cracks.

Adjust the pressure between rubber rollers, as well as the pressure between rubber rollers and printing components, according to the elasticity, hardness of rubber and its working function in printing. Generally, use a 0.15~0.20 mm feeler gauge for inspection. Lubricate the feeler gauge beforehand to prevent scratches on the rubber surface.The radial contact pressure of the rubber roller must be uniform. Uneven pressure will, after long-term operation, cause the rubber on the high-pressure side to roughen, degrade, crack and peel off.