Reaming Tools Catalog - Komet

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DIHART DAH ® Compensating Holder
Assembly instructions
Clean grinding surfaces thoroughly
dry and free of grease and debris.
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Pre-load evenly with the 6 assembling screws
(compressing the spring washer flat)
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Adjusting the DAH ® must be done in the machine on
the spindle where the tool will be in use!
Center the indicator on the gauge line as shown.
KOMET recommends using an indicator with either
0.0001" or 0.002 µm increments
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Determine the run-out by rotating the tool until the indicator
is at its highest reading.
Rotate so that the adjustment screw is at the highest
point.
Tighten the adjusting screw so that the indicated run-out
is reduced in half.
Repeat this procedure until the run-out error is < 5 µm
(0.0002").
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Tighten the assembling screws in a cross-wise pattern.
Please observe the specified torque M in the index-table. After
fastening, fix the adjusting ring by locking the thread pin .
M
DAH
d1
Torque
M
63 62 – 80 in-lbs (7 – 9 Nm)
81 62 – 80 in-lbs (7 – 9 Nm)
115 221 – 310 in-lbs (25 – 35 Nm)
Cross-wise pattern
82
A final check should show a run-out of < 5 µm (0.0002").