CUTTING HEADS
The cutting head is a ring of vertical
knives and horizontal separators in a rigid,
one piece unit (Figure 13). Cutting heads
are identified by the Urschel 5-digit part
number and a corresponding description
number. The description number indicates
the height of the head (3"), the pattern and
number of columns, the openings between
and the thickness of horizontal separators,
and the material of construction. See pages
54 & 56 for more detailed information.
Cutting heads are available in two differ-
ent styles, each made by a different
method: Urschalloy cutting heads are cast
from one of the toughest and most wear
resistant alloys. Fabricated cutting heads
are made of individual pieces of a tough
special alloy stainless steel, assembled
and silver brazed together. Each style of
cutting head is available in several different
types (Figure 14, page 21). The type indi-
cates the pattern and number of columns,
which contain the cutting edges. Fewer
columns will produce a thicker particle. See
pages 55 & 57 for a list of available cutting
heads.
IMPELLERS
The Di-o-cut impeller is designed to con-
tinually move product over all cutting edges
of the cutting head to produce the longest
possible usage. It is a popular, general
purpose impeller used for a wide range of
products.
The Straight Blade impeller is used for
special applications where noise levels are
not a concern, less heat build-up is desired
and fewer fines are required (depending on
product).
The Dog Leg impeller is used for pro-
cessing meat and tough, fibrous products.
GENERAL INFORMATION
Cutting Heads and Impellers
20
3
Figure 13 — Typical cutting head and cross section
(“K” type Urschalloy). (1) Columns, (2) Horizontal
Separators, (3) Openings Between Separators,
(4) Vertical Knives
4
2
2
1
1
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