Core Drill Data

What size barrels can I use on my core drill? What is the speed I should run them at? These are all important questions core drillers need to know. United Diamond Tools have produced these tables to answer all these questions for you. Just remember:

  • These specifications were supplied by the manufacturers and are for the machine models as indicated.
  • Because of the many variables when coring (eg hardness of material, power of drill, skill of operator, brand of barrels used etc), these specifications are indicative only.
  • Any core drilling above 60-75mm (different manufacturers have different recommendations) must not be hand held, but in a drill rig
  • All specifications are based on wet drilling only
  • Slip torque of clutch (clutch setting) is measured when pinion shaft is out of the drill, held in a vise, and are specified by the manufacturer.
  • Always read your core drills operation manual before use.
  • Wear correct PPE (personal protective equipment)
  • Use the core drill and barrel only in a safe manner as described in the operation manual.
  • Do not undertake repairs unless you are a competent mechanic.
  • We stock the clutch tool for holding the splined gear while you are torquing up the clutch (see more here).
    Fits Weka, Dymaxion, Eibenstock, Husqvarna and more. 1/2" drive.  $65 incl GST

Suggested Drill speeds:

Diameter (mm) Drill Speed
8-29mm 3000RPM
30-45mm 1500RPM
46-65mm 1200RPM
66-89mm 900RPM
90-125mm 600RPM
126 - 200mm 450RPM
201 - 400mm 300RPM
401mm  upwards 150RPM

Dymaxion PCD1700HH:

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Clutch setting - 14-16Nm (10- ft/lbs -12ft/lbs)
Oil - 120 mils, 80w/90w Gear oil
Maximum barrel size - 90mm concrete, 133mm brick (on a drill rig)

Eibenstock PLD182:

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Clutch setting - TBA Nm
Oil - TBA

Gear No Load speed Rated Speed Max drill diameter (concrete)
1 950rpm 520rpm 182mm
2 2200rpm 1250rpm 72mm
3 4400rpm 2700rpm 42mm

Husqvarna

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Husqvarna DM230:

Clutch setting - 17Nm
Oil - 250 ml Mobil Lube1 SHC 75W90, Shell Spirax ASX 75W-90 or other similar synthetic transmission oil.

Gear No Load speed Rated Speed Max drill diameter (concrete)
1 730rpm 580rpm 150mm
2 1700rpm 1400rpm 80mm
3 3600rpm 2900rpm 40mm

Husqvarna DM220:

Clutch setting -  16 Nm
Oil - 250 ml Mobil Lube1 SHC 75W90, Shell Spirax ASX 75W-90 or other similar synthetic transmission oil.

Husqvarna DM340:

Clutch setting -  30–32 Nm (22–24 lbf·ft)
Oil - 500 ml Mobil Lube1 SHC 75W90, Shell Spirax ASX 75W-90 or other similar synthetictransmission oil.

Golz FB33P, FB33S:

Clutch setting - 12Nm
Oil - 300 ml 80w/90w Gear oil

Gear No Load speed Rated Speed Max drill diameter (concrete)
1 830rpm 520rpm 150mm
2 2200rpm 1400rpm 55mm
3 4600rpm 2900rpm 25mm

Tyrolit DK16:

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Clutch setting - 12-14Nm (9- ft/lbs -10ft/lbs)
Oil - 120 mils 80w/90w Gear oil
Maximum barrel size - 160mm brick (on a drill rig)

Weka DK12, DK13, DK14, DK16 and DK18:

Clutch setting - 12-14Nm (9- ft/lbs -10ft/lbs)
Oil - 120 mils 80w/90w Gear oil

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Disclaimer: the information on this website is provided in good faith and believed to be reliable and accurate at this time. However, the information is provided on the basis that the reader will be solely responsible for assessing the information and its veracity and usefulness. UDT shall in no way be liable, in negligence or howsoever, for any loss sustained or incurred by anyone relying on the information, even if such information is or turns out to be wrong, incomplete, out-of-date or misleading.

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United Diamond Tools

Unit 10 / 84 Barberry Way
Bibra Lake
Perth
Western Australia 6163

Telephone: (08) 9434 6878
Mobile: 0419 901 533

Email:  sales@udt.com.au