The Fitzpatrick Company
D6B Manual Ver 1_24 Jan 2012-DRAFT.doc
A Unit of
Corporation
Page 21 of 49
3.2
Rotor Rotation: Knife or Impact Milling
The D6B is equipped with a one-piece rotor assembly with both knife and impact edged
blades. The impact or blunt edge is designed for fine size reduction, whereas the knife or
sharp edge is utilized for producing a larger or granular end product with minimum fine
powder.
The D6B is designed to allow
operation in only one direction of
rotation. To switch from Knife to
Impact edge milling, it is necessary to
remove the rotor and re-install it in the
opposite orientation. The D6B rotor is
designed to be reversible for this
reason.
Figure 3.2.1 shows the D6B rotor with
Knife blades configured for clockwise
rotation.
Fig. 3.2.1: D6B rotor with Knife / Impact Blades
The direction of motor rotation should always be counter-clockwise.
