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T1227/28/29 Magnetic Chuck (Mfd. Since 09/17)
4. MAGNETIC FORCE VARIATION: Clamping
force generated varies greatly depending on
the material, thickness, flatness, and cleanli-
ness of the workpiece. A workpiece that does
not clamp securely may be ejected from
the chuck during use and thrown into the
operator or bystanders. ALWAYS check for
adequate clamping force before beginning an
operation.
5. SUDDEN WORKPIECE MOVEMENT: When
the magnetic force is released, workpieces
may shift or fall unexpectedly and could result
in crushing injuries or personal injury. Fully
support any clamped workpieces before turn-
ing the magnetic chuck
OFF.
6. PROPER MOUNTING: If magnetic chuck
shifts during use, chuck and workpiece could
be ejected from machine and thrown into
operator or bystanders, resulting in impact
or crushing injuries. Make sure the magnetic
chuck is properly secured to grinding table
before operation.
7. CHUCK STOPS: If the workpiece is not rest-
ing against the stops during operations, it may
shift and could be ejected from the machine
and thrown into the operator or bystanders,
resulting in impact or crushing injuries. Make
sure the workpiece rests against the rear and
side stops during operation. If necessary, use
spacers between the stops and workpiece.
8. SURFACE GRINDER SAFETY: Failure to
follow surface grinder safety could result in
serious personal injury or even death. Follow
all safety guidelines provided by your surface
grinder manufacturer.
9. RELEASING CLAMPING FORCE: Turning
the magnetic chuck
OFF during operation
will release the workpiece, which may cause
the workpiece to shift and be thrown into the
operator or bystanders. Never turn the chuck
selector
OFF during grinding operation.
10. FERROUS METALS: This magnetic chuck
will only work on metals containing iron. Non-
ferrous metals will be ejected from grinder
during use and could be thrown into operator
or bystanders, resulting in impact or crushing
injuries. DO NOT expect the chuck to hold
aluminum or other non-ferrous metals.
Before placing your magnetic chuck onto your
surface grinder table, you must ensure that your
grinder table is flat. Variations in table flatness can
occur as a result of shipping and storage, manu-
facturer's production tolerances, overheating dur-
ing use, previously mounted magnetic chucks, or
for various other reasons.
To prepare the grinder table for chuck mounting,
very lightly grind, or "dust", the entire table surface
to make sure it is perfectly flat.
Grinder Preparation
Chuck Preparation
Before putting your new magnetic chuck to use,
there are a few steps you must take to ensure
optimal performance and accuracy from your
grinding operation.
Removing Surface Imperfections
If damage was done to the crate during shipping,
the bottom surface may have scratches or dings.
If any imperfections are detected, perform the fol-
lowing steps.
To remove surface imperfections:
1. Very carefully clean grinder table and top sur-
face of magnetic chuck to remove any foreign
material.
2. Use a polishing stone to remove any surface
imperfections on machine table and top sur-
face of magnetic chuck. Rough table finish
may reduce holding power during the follow-
ing steps.
3. Carefully place magnetic chuck upside-down
onto table surface.
4. Engage magnet by turning chuck selector to
the ON position to lock it to the table.
5. Use surface grinder to grind bottom surface
flat and remove any imperfections. Be careful
to remove only as much material as neces-
sary, and DO NOT attempt to remove more
than 0.0001" per pass.
Summary of Contents for T1227
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