Kongskilde KG 3000, Directions For Use Manual

Page: 37 / 132

37
Cylindrical grinding parameters
Assembly and setting clearances
Only sharpened knives should be used when resetting cutting clearances. NEVER AD-
JUST WORN KNIVES.
Rotor knife placement
Rotor knives cylindrically ground on the cutter or granulator rotor should remain untouc-
hed.
When using “pre-ground” knives, clean all serrated surfaces. Attach knives to rotor using
eight button head cap screws and eight disc springs (items 12 and 16). Fasten knives to
rotor in equivalent serrations (so that knife edges rotate on same arc-nominally 171.5 mm /
6 3/4’’).
Lock rotor as described previously and tighten screws with 25 Nm/16.5 ft-lb (40 Nm/29 ft-lb
for MC 5000).
Repeated sharpening of rotor knives moves surface D closer to the edge of the disc
springs. Rotor knives MUST BE REPLACED if the disc spring washers overhang the kni -
ves as shown in FIG. 7.
FIG. 7
Rotor knife surface D
Unacceptable: Disc spring overhangs
Type of
knife
CPM-10V
Tungsten
carbide
Type of
surface
grinding
wheel
32A60H
8VBE
D100/200
(rough grind)
D220N100B
(final grind)
Surface speed
of wheel
m/sec. (SFPM)
20,3-30,5
(4000-6000)
25,4-30,5
(5000-6000)
25,4-30,5
(5000-6000)
Surface speed
of rotor knives
m/sec. (SFPM)
0,2-0,6
(40-120)
0,25-1,3
(50-250)
0,25-1,3
(50-250)
Grinding wheel
advance/pass
Rough: 0,08 mm
(0,003”)
Finish: 0,01 mm
(0,0005”)
Rough: 0,008 mm
(0,0003”)
Finish: 0,003 mm
(0,0001”)
Rough: 0,008 mm
(0,0003”)
Finish: 0,003 mm
(0,0001”)
Coolant
No
No
No