JAVELIN MACHINERY (AUSTRALIA)
J800 /J900 OPERATION MANUAL
(incl. Troubleshooting Machine Problems)
JULY 2016
Page 20
SLITTING TOLERANCES
CHECKING - KNIFE SPINDLE FOR RUNOUT,
Problem – slit rolls out of tolerance or double cutting.
Check for axial play and runout in knife spindle as follows:
1. Remove knife.
2. Remove cover on front of knife pedestal.
3. Place hand on either end of knife spindle and firmly press end of spindle alternating left
and right to visually detect any axial movement.
4. If movement is detected:
a) Loosen locknut on left-hand end of spindle and bearing grub screws.
b) Loosen bearing housing retaining bolts.
c) Move either or both bearing housings outwards to create approximately .020” (.5mm)
between the bearings and the spacer tube.
d) Tighten bearing housings and nip grub screws. Grub screws in both bearings must
be in line axially.
e) Tighten spindle locknut and then the grub screws. This will preload the bearings in
the housings with no axial float.
NOTE:
•
Brake band must not drag on brake hub.
•
Adjust motor cut out switch so that the motor stops just before brake drag is
applied.
•
Runout should not be more than .002” (.05mm) axially and radially on spindle.
Backing Plate
Washer
Peg
Retaining Bolts
Brake Band
Bearing Housing
Pulley
Knife Nut
Spindle
Bearing
Spacer Tube
Bearing Grub Screws
Backing Plate
Lock Nut
Backing Plate
Brake Hub
