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2009 DURATECH TUB GRINDER OPERATING INSTRUCTIONS
5. Apply lubricant to the bearings and the seal rings. The lubricant should be smeared between the rolling
elements. Use Mobil SHC‑626 or similar oil for bearing lubricant. Do not use detergent motor oil!
6. Place the shaft with the bearing into lower half of the housing while carefully guiding the seal rings into
the housing grooves.
7. Bolt the lower half of the non‑expansion bearing housing to the base. Move the shaft endwise so that
stabilizing ring can be inserted between the bearing’s outer ring and the lower half shoulder of the housing
on same side as the locknut. Make all other bearings on the same shaft expansion bearings by centering
in the middle of their housing seat. Bolt the expansion housings to base.
NOTE: Only one bearing per shaft is non-expansion, other bearings should be expansion.
8. When a closed end is required, the end plug supplied should be t into the center seal ring groove of the
housing.
9. Lubricate the bearing seal grooves in the housing cap and place over the bearing after wiping the mating
surfaces. The two dowel pins will align the cap with the lower housing half.
NOTE: Each cap must be matched with its mating lower half, as these parts are not interchangeable.
10. Tighten the cap bolts and nuts to 208 to 260 ft‑lbs.
11. Make sure that there is enough seal running clearance, and then install V‑ring seals onto the seal rings
and coat the V-ring seals with grease.
12. Misalignment of the pillow blocks must not exceed 1/2°.
5.11 Rotor bearing maintenance
WARNING: To insure that drive is not unexpectedly started, turn off and lock out or tag power
source before proceeding. Failure to observe these precautions could result in bodily injury.
Remove the housing cap in order to inspect the bearing and lubricant. Before reassembly, it is important that the V‑ring
seals be removed. This will ensure that the seal lip will not be damaged while setting the cap in place. Reassemble the
rotor bearing using steps 9 through 11 above.
Seal Replacement
When removing a bearing it is recommended that V-ring seals and seal rings be replaced.
( REV. 08-04 )
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