Sterlco BP800 Series Granulators - Manual (Page 31)

800 Series beside-the-press Chapter 5: Maintenance 31 of 43
9. Before re-installing the knife bolts, wipe them clean with a light, oil-
damped cloth. Do not leave an oil film on the bolt since lubrication can
adversely affect the stress on the bolt when torqued to the specified
values.
It is recommended that the knife bolts be replaced with each new set of
knives. This will reduce the risk of bolt failure due to overstretching.
Always use the specified replacement bolts.
10. Tighten each set of the knife bolts, making sure that the knife is seated
against the back heel in the rotor seat. Before setting the torque of the
bolts, check that a 0.001" feeler gauge cannot fit between the heel and
the back of the knife.
11. Torque the rotor knife bolts to 100 lbs/ft. (14 kg/m, 135 Nm).
12. Adjust the knife gap with the bed knives and close the machine,
following steps 8-12 in “Inspection and Adjustment of Knives.”
Specifications for Re-sharpening Bed Knives
Every bed knife has two cutting edges, one on each side. When a blade becomes
worn, the knives can be rotated. To regrind these knives, refer to Bed Knife
Specifications. Replacement of these knives is necessary when their length fails
below the recommended tolerance.
Model X Y
810 2.43 in.
61.8 mm
2.75 in.
69.9 mm
814
818
Grind these surfaces only
New knife length, Y
Minimum length, X
.158", (4 mm)
20°