In the Grubbens Deflaker the pulp passes through eight vibration zones under continuous flow reversals and is therefore well processed without fibre boundless in spite of the low peripheral speed.

The design of the deflaking discs allows compensation of wear trough axial movement of the rotor disc. The discs are made of hardened, acid-resistant steel with Brinell hardness of about 400 HB. High corrosion resistance ensures negligible abrasive wear.

Grubbens Deflaker types GLD 200 and 360 have fixed axial rotor discs. On type GLD 360 HW the rotor disc is axially adjustable. The disc gap can easily be adjusted using a hand wheel which will enhance the performance of the deflaker.