Preliminary Settings; Sharpening Of Tooth Edge; Grinding Of Inner Blade Side - EFA 53 Betriebsanleitung

4. Operation of the EFA 53
skinning blade grinder
Each dehiding machine is equipped with a pair of
skinning blades, and blades must therefore always
be replaced and/or reworked in pairs. For the
sharpening of the toothed edge, the second blade of
a pair must be adjusted to the same mark at the
feed screw (55) and ground in the same way as the
first blade.

4.1 Preliminary settings

The pivot lever (27) with the blade support (41) is
centred to the tooth centre of the profile disk (65).
To adjust the position, loosen the nut (38) and
adjust the spindle with a size 10 Allen key. After
completion of the adjustment retighten the nut
(38).

4.2 Sharpening of tooth edge

4.2.1
Loosen the clamping lever (57), move the swivel
bearing (40) to its lower end position (position "a"
in the exploded view in appendix A) and retighten
the clamping lever (57).
4.2.2
Turn the pivot lever (53) with the straight pin in
such a way that the pin engages in one of the 4
notches of the blade support (41). Hold the
clamping lever, remove the clamping handle and
position the EFA skinning blade on the support,
ensuring that the bushing end is placed in the recess
of the support (41). The side that faces the other
blade in the machine is thus facing upwards. Screw
the clamping handle (56) onto the bolt of the
support (41) and secure the skinning blade so that
it cannot move. The blade is ground from left to
right, so that the fixing lever (51) always engages
with an unground tooth gap. Push the clamping
lever down, turn forward by one blade tooth and
secure the blade again.
4.2.3
Move the pivot lever (27) against the profile disk
(65) (position "d" in the exploded view in appendix
A). Adjust the feed screw (55) in such a way that the
grinding wheel (65) can freely rotate. Switch on the
motor and move the blade against the profile disk
until the tooth is visibly ground. Ensure that the feed
screw (55) remains in this position!
Ground 5 to 10 teeth. Remove the blade and check
the tooth edge (see drawing and table below).
Schmid & Wezel
D-75433 Maulbronn
Table 1: Tooth profiles
1
2
3
4.2.4
Always fully regrind all blade teeth at a constant
grinding depth. Move the blade with the feed screw
(55). Turn the screw clockwise to reduce the
grinding depth. Turn the screw anticlockwise to
increase the grinding depth.
4.2.5
In order to prevent damage to hides, trim/blunt the
tooth tips.
Switch off the motor!
Release the clamping lever (57) and turn the
console upwards (see position "b" in the
exploded view in appendix A). Secure the
clamping lever (57).
Adjust the feed screw until the grinding wheel is
released (see 4.2.3).
Switch on the motor.
Adjust the feed screw until there are slight
abrasion marks at the tip of the tooth.

4.3 Grinding of inner blade side

Hold the skinning blade with the magnetic blade
holder (60) and centre the blade bushing with the
pin. Centre the holder (60) with the blade on the
retaining bushing. Push it against the cup wheel
(64) and swivel it back and forth around the
Seite/Page
5 / 11
Tool profile OK: Continue with step
4.2.4.
Tooth profile too long: Release the
clamping lever (57) and turn it
back. Insert the stud (b) until the
tooth profile is OK, and then
tighten the nut.
Tooth profile too short: Release
the clamping lever (57). Loosen
the stud (b) until the tooth profile
is OK, and then tighten the nut.
Ausführung/Execution
02.2013