Page 93 - HOLE MAKING CATALOG p185-310

USER GUIDE DEEP DRILLING - BTA SYSTEM

Deep Hole Drilling Systems

Problem Possible Cause Solution

The drill breaks or • Chip evacuation problems • Check that the coolant passages are clear
insert chips • Center misalignment of drill to workpiece and that the Venturi slots are not damaged

Poor surface finish • Workpiece or drill clamping rigidity problem • Check center alignment of drill to workpiece
• Inadequate coolant oil • Check workpiece and drill clamping rigidity
• Cutting speed too low
• Improve workpiece or drill clamping
Excessive leakage of • Chips block the fluid passages • Check the coolant oil and replace if necessary
• The drill was incorrectly assembled, • Increase the cutting speed
the coolant
or the Venturi slots of the internal tube • Clear the chips
• Check all connections and the
are located in the wrong direction
direction of the internal tube
Insufficient coolant • Chips block the fluid passages
flow at the cutting • Worn bushing or sealing device • Clear the chips
zone, despite correct • Venturi slots are too wide (worn) • Check the bushing and seal
• Internal tube shorter than the external tube
fluid supply and replace if necessary
• Replace the internal tube
Chips jam in the front • Insufficient coolant flow • Replace the internal tube to
end of the drill
one with a correct length

• Adjust the fluid flow by raising the pressure;
check the filter and fluid quality

Connection Adapters Special Heads

Various kinds of rotating and non-rotating drill Special form heads for trepanning or any other
connectors are available upon request. special contours can be produced on request.

Oil Pressure Heads
Oil pressure heads are available on request.

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