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OPTIMUM
M A S C H I N E N - G E R M A N Y
Malfunctions
21 / 10 / 2008
Page 41
Malfunctions Bench drill B16 H Vario ; Version 1.0.2
©
2
008
GB
Spindle bearings over-
heating
•
Bearing worn down
•
Excessive prior tension of the
bearing
•
Working at high rate for a long
time
•
Replace
•
Reduce bearing slack for fixed
bearing (conical-roller bearing)
•
Reduce bit speed/feed
Working spindle rattling
on rough piece surfaces
•
Excessive slack in bearing
•
Working spindle goes up and
down
•
Adjustment strip loose
•
Chuck loose
•
Tool blunt
•
Piece loose
•
Reduce bearing slack or replace
bearing
•
Readjust bearing slack (fixed
bearing)
•
Adjust strip to the correct slack
using the adjusting screw
•
Check, re-tighten
•
Sharpen or replace tool
•
Secure the piece properly
Malfunction
Cause / possible effects
Solution