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Installation and disassembly of printing machine bearings

Installation and disassembly of printing machine bearings

2020-06-03

Printing machine bearing is a high precision mechanical unit.Care must be taken with these products before and during installation.

The function and service life of the bearing also depend on the degree of care taken during installation.

Delivery status and storage

Printing machine bearings are protected by mineral oil base anti-rust oil.A bearing that is pre-filled with grease and sealed depends on the shelf life of the grease and the material of the sealing ring.

The bearing shall be stored in a dry, clean room at a temperature as constant as possible and with a relative humidity of no more than 65%.

Demolition of the packing

Sweat can cause corrosion:

■ keep your hands clean and dry

■ safety gloves must be worn

■ do not remove the original packing of the bearing until it is installed.

Installation method

Depending on the situation of each printing machine manufacturer, there are many installation methods available.

Cooling the bearing

This method is often applied to the installation of tapered hole bearings that fit closely with the wall panel holes.

After cooling the bearing unit with the inner ring removed, it can be installed into the wallboard hole by hand without installing tools.The inner ring is then loaded together with a suitable ring.

Cooling the bearings can cause condensation to form on them.To avoid corrosion, bearings and wallboard holes should first be sprayed with high performance mineral base oil.

Press mount at room temperature

In addition, the bearing can be safely pressed at room temperature.

In order to overcome the press-in force, suitable installation tools are required to match the bearings and the printing press.In order to prevent bearing damage due to improper installation, we recommend that the installation process and the operation of the installation tool be approved by the engineering services department of Schaeffler Group.In this way, the bearings of a printing machine with up to four turns mounted on a cylindrical shaft and fitted tightly to the wall plate holes can be safe and very good.

Remove the

For taper hole bearings, the inner ring can be released from the shaft by means of hydraulic pressure.The outer ring of the bearing or the outer ring assemblies of the three - and four-ring bearings may be removed from the wallboard by a suitable unmounted tool.The size of the retaining ring and eccentric ring shoulder is determined to ensure that the bearing will not be damaged.

When the cylindrical hole bearing is disassembled, its inner ring can be disassembled at the same time.This is important because these bearings are often pre-tightened and can easily damage the raceway if disassembled separately.


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