Rieter

Types

Index

Spinning mills operate with two groups of top rollers (pressure rollers):

  • rollers mounted on bearings at both ends on drawframes and in the combing room and
  • twin rollers (also known as compensating rollers) on roving frames and ring spinning machines.

Compensating rollers are supported by the  pressure arm in the center. They can rock slightly relative to the axis of the bottom roller. They are available in two versions:

  • fixed rollers, with the two pressure bodies (1, Fig. 10) at left and right forming a rigid unit which can only be rotated together and
  • loose rollers, with the two pressure bodies separately mounted and able to rotate independently of each other.

A distinction is also made according to whether the roller bodies can be removed from the shaft (removable shell), or are permanently attached to the shaft (non-removable shell). The roller bodies are mounted on single-row or double-row ball bearings.

Fig. 10 – Pressure roller