Blade troubleshooting chartDiamond Blade Problems and Remedies.
Click on the problem below to find a possible cause and remedy
The majority of problems encountered arise from:
– the use of a drill bit not suited to the job,
– the incorrect use of a drill bit,
– equipment faults.
CLICK A SYMPTOM BELOW TO SEE THE CAUSE AND THE REMEDY
-> The tool will not cut.
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Symptom
The tool will not cut.
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Cause
The material is too hard for the diamond specification.
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Remedy
Match the diamond specification to the material.
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The bit is glazed (smooth diamonds).
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Re-sharpen the tool by drilling into abrasive material (sandstone, block etc.)
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Excessive speed of rotation.
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Adjust speed of rotation.
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The cooling is excessive and causes the tool to aquaplane.
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Reduce the water flow.
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Excessive play within the carriage guides.
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Adjust the carriage on the slide to reduce play.
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The weight on the tool is insufficient.
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Increase the weight on the tool.
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The machine is badly fixed.
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Check that the machine’s fixing is correct.
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The motor is too weak.
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Match the motor power to the diameter.
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-> Excessive wear of diamond segments.
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Symptom
Excessive wear of diamond segments.
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Cause
Insufficient irrigation.
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Remedy
Adjust the water flow.
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Insufficient speed of rotation.
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Adjust speed of rotation.
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Excessive speed of advance.
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Reduce speed of advance.
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The material is more abrasive than expected.
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Use a blade with a harder diamond specification (see drill-bit selection table).
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Too much motor power applied to the tool.
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Match the motor power to the drill diameter.
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Too much play on the machine causing vibrations.
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Check the state of the machine.
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-> Excessive wear of the bit’s steel tube.
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Symptom
Excessive wear of the bit’s steel tube.
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Cause
The machine is badly anchored.
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Remedy
Anchor the machine firmly.
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The machine is incorrectly adjusted (excessive play in the carriage guides, motor spindle or adapter out of true, etc.).
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Correctly adjust the machine, replace worn parts, correct the play (rollers, bearings, adapters, etc.).
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The tool is warped.
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Withdraw any warped tool. If it is relatively new, it may be straightened by the supplier.
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The bit is not correctly fixed to the motor spindle.
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Check that the bit is correctly aligned on the motor spindle (straight line).
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There are fragments of metal in the bottom of the hole that have not been evacuated by the coolant.
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Remove all the metal fragments from the drilled hole. Temporarily increase the flow of water to clean out the hole and remove any debris that may still be there.
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-> Segments broken and lost in the hole.
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Symptom
Segments broken and lost in the hole.
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Cause
For a bit with brazed segments, stopping the coolant even for an instant has caused the segments to heat up and destroy the brazing.
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Remedy
Always ensure the tool is correctly irrigated.
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The bit has suffered some knocks in the hole (due to steel or loose debris, etc.) and these have broken the segments.
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Remove the bit from the machine and recover all the bits of steel, segments and debris before introducing a new bit. If any segment debris remains in the hole, there is a risk of very rapid damage to the new bit.
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Excessive speed of rotation causes heating up of the segments.
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Take the tool out of service, replace or repair it if possible (consult supplier). Adjust the speed of rotation.
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Start up too brutal.
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Always start drilling gently.
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Impacts due to the equipment being dropped.
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Avoid dropping the bit on the ground as this can crack the segments.
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-> Tool jammed in the hole.
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Symptom
Tool jammed in the hole.  |
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Cause
Debris is blocked between the core and the bit tube (steel, pieces of material); a steel bar has been drilled “banana shaped”; it has moved during drilling and jammed the bit (wedge effect).
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Remedy
Disconnect the bit from the machine: use a spanner to turn the bit in both directions until it is released.
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Loss of side-clearance of segments.
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Check the side-clearance of the segments. If the play is too little replace the tool.
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