Kongskilde MC 3000 Instructions De Service page 37

Cylindrical grinding parameters
Type of Type of
knife surface
grinding
wheel
CPM-10V 32A60H
8VBE
Tungsten D100/200
carbide (rough grind)
D220N100B
(final grind)
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.
Rotor knife surface D
Surface speed Surface speed
of wheel of rotor knives
m/sec. (SFPM) m/sec. (SFPM)
20,3-30,5 0,2-0,6
(4000-6000) (40-120)
25,4-30,5 0,25-1,3
(5000-6000) (50-250)
25,4-30,5 0,25-1,3
(50-250)
(5000-6000)
FIG. 7
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")
Unacceptable: Disc spring overhangs
Coolant
No
No
No
37