Bulletin Number Chapter 3: Installation 18 of 36
not cut the gauge, should the knives be too close. Check the knives on each end only.
Proper clearance is 0.005” to 0.008” for most materials. 0.014” to 0.016” for solid
wall pipe with 0.187” wall thickness or greater. This clearance is slightly greater at
the center of the knives.
Note: Recheck knife clearance after the first 24 to 36 hours of operation.
5. To make the adjustment on the bed knives, the bed knife bolts should be hand
tightened to hold the knife firmly against the knife seat while adjusting the knife
forward using push and pull screws. After the clearance is set, torque the screws
according to Section 7-2 on page 30.
6. With the exposed parts of the machine thoroughly clean, and all knife clamping bolts
securely fastened, close the cutting chamber as described in Section 3-5 on page 15.
Note: After initial start-up, the rotor knife retaining screws should be checked after
8 hours running to be assured that the proper torque is maintained.
Thereafter, rotor knife retaining screws should be checked weekly.
Note: The rotor must be rotated at least two rotations every 30 days to prevent
brinnelling and corrosion of raceways.
