Support > Safety > Deep Hole Drilling Guidelines > Superion® Drills

Deep Hole Drilling Guidelines

 
Step 1: Pilot Hole
  • 100 % RPM
  • 100% IPR (mm/rev)
Details:
  • Establish the pilot hole using the same diameter short drill to a depth of 2xD minimum.
  • Utilize a pilot drill with the same or larger included point angle.
Coolant: ON
Step 2: Feed-in
  • 50 RPM max
  • 12 IPM (300 mm/min)
Details:
  • Feed the longer drill within 1/16" (1.5mm) short of the established pilot hole bottom at a maximum of 50 RPM and 12 IPM (300 mm/min) feed rate.
Coolant: OFF
Step 3: Deep Hole Transition Drilling
  • 50 % RPM
  • 75% IPR (mm/rev)
Details:
  • Drill additional 1xD past the bottom of the pilot hole at 50% reduction of recommended speed and 25% reduction of recommended feed.
  • Minimum of one second dwell is required to meet full speed before feeding.
Coolant: ON
Step 4: Deep Hole Drilling - Blind
  • 100% RPM
  • 100% IPR (mm/rev)
Details:
  • Drill to full depth at recommended speed and feed for longer drill according to Allied speed and feed charts.
  • No peck cycle recommended.
Coolant: ON
Step 5: Deep Hole Drilling - at Breakout
  • 50% RPM
  • 75% IPR (mm/rev)
Details:
For through holes only:
  • Reduce speed by 50% and feed by 25% prior to breakout.
  • Do not break out more than 1/8" (3mm) past the full diameter of the drill.
Coolant: ON
Step 6: Drill Retract
  • 50 RPM max
Details:
  • Reduce speed to a maximum of 50 RPM before retracting from the hole.
Coolant: OFF
Tool failure can cause serious injury. To prevent:
   - When using Superion drills greater than 9xD without support bushing, use a short Superion drill to establish an initial hole that is a minimum of 2 diameters deep.
   -  Do not rotate drills more than 50 RPM unless it is engaged with the workpiece or fixture.
Factory technical assistance is available for your specific applications through our Application Engineering department.

North and South America and Asia: 1-330-343-4285 ext: 7611   |   email: appeng@alliedmachine.com

Germany: +49 (0)7022 408-0 | email: info@wohlhaupter.de

United Kingdom:  +44 (0) 1384 400 900 Ext. 4 | engineering.eu@alliedmachine.com
This triangle is a safety hazard symbol. It alerts you to potential safety hazards that can cause tool failure and serious injury. When you see this symbol in the catalog, look for a related safety message that may be near this triangle or referred to in the nearby text.