Darex XT-3000A - Manual (Page 20)

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The Darex XT-3000 comes equipped with
electroplated CBN (Cubic Boron Nitride). Optional
Diamond wheels are available. The wheel comes
installed on your sharpener ready to sharpen
drills.
Sharpening with an electroplated CBN (Cubic
Boron Nitride) or Diamond grinding wheel reduces
grinding cost and improves quality of the finished
product. These results are obtained because the
grinding material is super abrasive. The CBN is
second only to diamond in hardness. In fact, CBN
has twice the hardness and four times the
abrasion resistance of an aluminum oxide grinding
wheel. The CBN and Diamond wheel last longer;
the grinding process is faster and less grinding
time is lost due to wheel breakdown &
maintenance.
WHEEL MAINTENANCE
These wheels are maintenance free from truing
and dressing but will need to be cleaned
periodically.
Disconnect the power from
the machine using a lock out tag out
procedure. After removing the wheel from the
sharpener, saturate the wheel with any type of
oil-less solvent, such as Automotive Brake
Cleaner. It is helpful to use a soft bristle brush
and lightly brush the saturated wheel, loosening
the impacted grinding particles. Re-saturate the
wheel to flush out any loosened debris. Do not
use any type of dressing tool on these wheels.
Damage to surface will occur and greatly shorten
the wheel life.
NOTE: If after cleaning wheel, the drills still
discolor or burn, the wheel life may be exhausted
and the wheel will need to be replaced.
WHEEL DESCRIPTIONS AND
PART#’S
• PP16050GF – 180-grit CBN grinding wheel
• PP16060GF – 100-grit CBN Point Split
grinding wheel
• PP16052GF – 180-grit Diamond grinding
wheel
• PP16062GF – 260-grit Diamond Point Split
grinding wheel
• PP16070TF – Grind wheel retainer
Do not attempt to grind carbide drills
with CBN wheels. Diamond wheels
are available if carbide is to be sharpened
on this machine.
WHEN TO REPLACE THE
WHEEL?
Eventually, the long-life electroplated wheel in
your XT-3000 will wear out. Indicators that a
wheel change is necessary are: a drop in
performance such as drill burning or excessively
slow sharpening time. Inspect the wheel for
abrasive quality. A worn wheel will appear
smooth. If it is necessary, replace the worn
wheel(s). New wheels will initially produce a
coarser grind. However, this aggressiveness will
disappear after approximately the first one
hundred drill sharpenings. Under normal use,
you should experience 4-6 thousand drill
sharpenings from each new wheel.
*Darex does not re-plate or recommend re-
plating the grinding wheels. For replacement
wheels, contact your Darex distributor or Darex .
HOW TO CHANGE A WHEEL
1. Unplug unit from power supply
and use a “LOCK OUT” “TAG OUT”
procedure.
2. Using a
3mm hex
key, remove
3; 3mm
socket head
cap screws
(PP12240FF)
from wheel
guard cover.
XT-3000 WHEEL INFORMATION