Care And Maintenance; Removing Workpiece - Grizzly T1227 Instructions Manual

Using Auxiliary Magnetic Blocks
If your workpiece cannot be placed flat on the
chuck due to warping, an irregular shape, or any
other reason, you must use auxiliary magnetic
blocks to support the workpiece. To ensure that
the workpiece is held parallel to the chuck, you
may need to grind the auxiliary magnetic blocks
before placing your workpiece in them.
Figure 6 shows an example of how magnetic
V-blocks can be used to mount a workpiece with
an irregular bottom surface.
Auxiliary
Magnetic Blocks
Figure 6. Using auxiliary blocks.
Only use magnetic blocks on this chuck
to hold irregular workpieces. Using non-
magnetic auxiliary blocks will not provide
sufficient clamping force and may result in
workpiece being thrown from grinder and
into operator or bystanders during use.

Removing Workpiece

After the grinding operation, remove your work-
piece from the magnetic chuck.
To remove a workpiece from chuck:
1.
DISCONNECT MACHINE FROM POWER!
2. Turn ON/OFF selector to OFF position.
-6-
3.
Workpiece
Care & Maintenance
For optimal performance from your magnetic
chuck, follow the maintenance schedule below.
Daily:
•
•
•
•
•
•
Monthly:
•
Semi-annually/Annually:
•
If you plan to place your surface grinder
into storage, remove magnetic chuck from
table. Metal objects left on grinder table
over extended periods will rust and cause
permanent damage to magnetic chuck and
grinder table. Store magnetic chuck on a
flat surface to minimize warping.
T1227/28/29 Magnetic Chuck (Mfd. Since 09/17)
Clean away any metal chips or swarf from
around workpiece and magnetic chuck with
a stiff-bristled brush and remove workpiece
from chuck.
Note: Workpiece may seem stuck to chuck
due to residual magnetism in workpiece or
a vacuum between workpiece and chuck.
If this is the case, a blast of air from an air
nozzle can be used to release the vacuum.
Alternately, you can slide the workpiece off
the side of the chuck to remove it. Using this
method, however, may result in scratches to
the chuck surface.
Check/correct loose clamping bolts.
Use a vacuum, rag, or brush to clean the
chuck after use. Never use air pressure to
clean metal chips/swarf away from a chuck.
Apply rust preventative to magnetic chuck
after each use to prevent rust.
Avoid leaving a workpiece on the magnetic
chuck when not in use.
Inspect for damage to the surface of mag-
netic chuck that may compromise its flatness.
Regrind as necessary.
Stone chuck surface before use.
Grind top of magnetic chuck to reduce effects
of warping.
Remove chuck, re-grind table, re-install
chuck, then re-grind chuck surface.