Handling diamond dry core bits
A "soft" diamond dry core bit is used for hard stone, so that the diamond splinters are
quickly freed from the segments during the drilling process.
If extraction is not used during machining, the diamond dry core bit increasingly rubs
against "soft" drill dust. The core bit segments heat as a result, they become soft and the
diamond splinters sink into the substrate. The diamond dry core bit becomes less sharp.
The cutting performance weakens and the user increases the pressure on the diamond dry
core bit, which in turn increases the effect. After drilling a few holes, the core bit segments
are "glazed" or they tear off at the least resistance in the stone and the diamond dry core
bit must be replaced.
Sharpening the diamond dry core bit on a sharpening plate or a soft stone between drilling
enables sunken in diamonds to be re-released and the diamond dry core bit is sharp again.
To extend the life of the diamond dry core bit and keep the cutting speed high, cooling by
extraction is necessary for the diamond dry core bit.
Cleaning
Danger!
Risk of fatal injuries due to electric shock.
► Disconnect the mains plug before carrying out any work on the dry drilling motor.
The machine must be cleaned after each drilling work session.
• Rub down the dry drilling motor carefully and blow out with compressed air.
• Lightly grease the thread of the core bit holder.
• If used, carefully clean the drill stand and blow out with compressed air. Lightly grease
the spindle head guideway and feed speed adjustment.
• Ensure handles are dry and free of grease.
Maintenance
Danger!
Risk of fatal injuries due to electric shock.
► Disconnect the mains plug before carrying out any work on the dry drilling motor.
The dry drilling motor must be serviced at least once a year. Further, servicing will be
necessary depending on the wear of the carbon brushes.
Only servicing and repair firms authorised by TYROLIT may carry out maintenance on the
machine. Ensure that original TYROLIT spare parts and original TYROLIT accessories only
are used.
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