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SOLID CARBIDE DRILLS User Guide

Troubleshooting

Problem Cause Solution
• Check the clamping. Use hydraulic clamping chuck,
• Poor clamping of the chuck
maxin power chuck or a shrink system.
• Unsuitable cutting conditions • Decrease feed, increase coolant pressure.
• Chisel runout • Check or replace the clamping adaptation.

• Workpiece movement • Increase workpiece chucking force.
Chipping on the chisel edge
• Check the clamping. Use hydraulic clamping chuck,
• Poor clamping of the chuck
maxin power chuck or a shrink system.
• Unsuitable cutting conditions • Increase cutting speed, reduce feed rate.
• Check cooling lubricant. Increase coolant pressure.
In the case of external coolant supply, improve jet
• Insufficient coolant
direction and add cooling jets.

Chipping on the cutting • Rough application • Reduce feed rate by 30-50% during entry and exiting.
edges / built-up edge
• Check cooling lubricant. Increase coolant pressure.
• Insufficient coolant
In the case of external coolant supply, improve jet
direction and add coolant jets.
• Large runout • Check if the runout is within 0.02 mm T.I.R. (radial & axial)
• Unsuitable cutting conditions • Reduce cutting speed, increase feed.
• Rough application • Reduce feed rate by 30-50% during entry and exit.
• Check the clamping. Use hydraulic clamping chuck,
Excessive wear on the • Poor clamping of the chuck maxin power chuck or a shrink system.
cutting corners
• Workpiece movement • Increase workpiece chucking force.
• Check cooling lubricant. Increase coolant pressure.
• Insufficient coolant
In the case of external coolant supply, improve jet direction and add coolant jets.
• Wrong drill • Check drill type, drilling depth, cooling system and workpiece material.

• Unsuitable cutting conditions • Increase feed. When spot drilling, reduce feed.

Chipping on the lands

• If hole size is too large, increase cutting speed or reduce feed. If
• Unsuitable cutting conditions hole size is too small, reduce cutting speed or increase feed.
• Check the clamping. Use hydraulic clamping chuck,
• Poor clamping of the chuck
maxin power chuck or a shrink system.
• Make sure that the drill’s runout is within 0.02 mm
• Large runout
(radial & axial).
• Worn out center
Hole diameter out of point (chisel) • Regrind cutting edge or replace the drill.
tolerance
• Insufficient chip evacuation • Use pecking cycle.
• Check the clamping. Use hydraulic clamping chuck,
• Poor clamping of the chuck
maxin power chuck or a shrink system.
• Workpiece rigidity • Increase workpiece chucking force.
• Worn out drill center • Regrind cutting edge.
point (chisel)

• Unsuitable cutting conditions • Increase feed. When spot drilling, reduce feed.

Hole not straight

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