PVC Extruder gearbox axial Tandem roller bearing F-51905.T3AR

Product Details

PVC Extruder gearbox axial Tandem roller bearing F-51905.T3AR

F-51905.T3AR F-51905.T3AR bearing specification as following:

Twin-Screw Extruders

The basic operation of twin-screw extruders is similar to that of single-screw machines, with one important difference: twin-screw extruders have two intermeshing screws that rotate in the same direction (co-rotating) or in opposite directions (counter-rotating). Co-rotating machines provide additional mixing power, whereas counter-rotating machines generate a smoother, more consistent end product.

Twin-screw extruders operate at relatively low rotational speeds of up to 1,200 r/min. They are driven by parallel-shaft gearboxes that have two output shafts instead of one. Axial loads induced on both screws are supported by thrust bearings on the gearbox output shafts.

Thrust Bearing Application Requirements

Application requirements for thrust bearings in single- and twin-screw extruders include:

High dynamic load ratings—Higher barrel pressures in extruders translate into faster extrusion and higher output as measured in kilograms or tons per hour. However, these pressures also create higher axial loads and require bearings with higher load ratings.