715 West Colton Avenue
Redlands, CA 92374
Toll Free: (877) 793-6636 US Only
Phone: (909) 793-6636
FAX: (909) 793-7641
Email: [email protected]
Covington Engineering Corp.
©
2013
1
ROCIPROLAP® INSTRUCTIONS
1.
Install the four leveling feet with a
washer, lock-washer, and nut on top.
2.
Insert one steel disc in each bearing cup
making sure the steel disc sets down
flat. Place two nylon thrust bearings in
each container. Add three or four drops
of machine oil onto bearings.
3.
Install the lap plate ensuring the plate
rests on the nylon thrust bearings by
twisting the plate back and forth. The
plate should turn freely. A visual
inspection will make certain.
4.
Place a level on the machined surface
of the lap plate. Adjust leveling feet
until level. Turn level 90 degrees or one
quarter turn and adjust feet until level.
5.
Start the machine and let run for
approximately five minutes. Check the
leveling feet by placing a finger against
the plastic pads and the floor. If one vibrates or bounces, loosen the nut and screw the foot
down by hand. Tighten the nut securely. Observe the lap plate in operation. With no load on
it, the lap plate should revolve about two to three times per minute. When lapping or
polishing it is normal for the lap plate to either slow down or revolve in the opposite
direction of the no load condition.
Caution:
Take extreme care with the wearing ring surface. This is the portion of the plate that
rides on the nylon thrust bearings. It must be kept scrupulously clean and well oiled with 30 or
40 wt. oil.
Never use grease.
HAZARDOUS CONDITION WARNING:
NEVER START THE ROCIPROLAP WITH
THE LAP PLATE REMOVED.
MISCELLANEOUS ADVICE
•
Inspect the nylon thrust bearings each time the plate is removed. If they are dirty or
discolored then the thrust plate is not being kept clean.
•
When the plate begins to revolve faster than normal it is an indication that the thrust balls are
failing or that you have too much oil on the bearings. If too much oil is not the problem (the
problem usually is overly worn bearings), you must change the complete set. The nylon
