T3AR F-53579 extruder gearbox bearing for snack machine

The tandem roller bearing T3AR F-53579 f-53579 t3ar will used for the snack food equipment 2 Clextral BC72 and 1 Clextral BC45 extruders,Please check the F-53579 T3AR bearing details:

How to choose the tandem cylindrical roller bearing type:
Three pieces of information are necessary when selecting a suitable tandem bearing:
– the maximum possible bearing OD
– the desired calculated rating life under operating load and speed
– the maximum screw pressure.

Design of bearing arrangements For the installation of tandem bearings, the adjacent construction must be designed as follows:
■ with preload of one percent of the basic dynamic load rating
■ with radial guidance, for example by means of needle roller bearings, Figure 5, page 4
■ without tilting. The adjacent parts must be machined such that no tilting is transmitted
■ taking account of the spring constants of the tandem bearing, especially when combined with axial bearings of a different design
■ with a mounting fit of f6 for the shaft and F7 for the housing bore, in order to achieve correct functioning of the bearings.

Tandem bearings offer an optimum solution wherever the following requirements apply:
■ small radial design envelope
■ high axial forces
■ long operating life
■ low frictional energy.
Tandem bearings have proven effective principally in gearboxes for single and twin screw extruders in the rubber and plastics industry.
Other possible applications include:
■ deep hole drilling equipment
■ friction welding machines.