Selecting The Correct Auger Drive Unit

AUGER DRIVES SELECTION
When selecting your auger drive, it is important to understand:
1. What flow & pressure the machine has.
2. What size augers are intended to be used.
3. What ground conditions will be drilled in.

SELECTING THE
CORRECT DRIVE FOR
THE APPLICATION IS
ESSENTIAL.

Machine Flow – Determines the speed at which the auger will turn. By selecting your flow range & working across the chart
you can see which drive is going to be the most suitable for the application you are performing.
GENERAL PURPOSE EARTH DRILLING AND SMALLER AUGERS 55 – 65 RPM
Smaller augers in general earth conditions need more speed.
HEAVY EARTH, CLAY, SOFT CHALKY ROCKS 45 – 55 RPM
Mid sizes augers / harder soils & compact clays
ROCK AUGERS 20 – 45 RPM
Large augers and fracturable rock. Drilling in rock is about power not speed. Too much speed creates too much heat & therefore
will wear the teeth out faster. Too much speed will also not allow the teeth to rip into the rock to break it out.

N.B. Effective drilling in rock requires down pressure & torque. Not all rock is drillable and having the right machine for the
application is essential.

Machine Pressure – Determines the amount of torque a machine will deliver
The importance of torque with drilling augers – The larger the auger diameter the more torque (pressure) that
will be needed.

OUTPUT SPEED RPM         PD = Std 
Flow (LPM)PDXPDX2PD3PDT3PD4PD5PD6PDT6PDT8PDT = 2 Speed
Low (High)Low (High)HF = High Flow
204422 (43)14 (27)11 (23)
255527 (54)17 (34)14 (28)
30665032 (65)20 (41)17 (34)
35775838 (75)24 (48)20 (40)
40886643 (86)27 (55)23 (45)
4599754949 (97)31 (61)25 (51)
50110835454 (108)34 (68)28 (57)
555959 (119)4738 (75)31 (62)
606565 (129)524541 (82)34 (68)
657070 (140)564844 (89)37 (73)
707575 (151)60524848 (96)40 (79)
758181 (162)64565151 (102)42 (85)
80695955
85736358
906761
957065
10068
10572
11075
11579

N.B. All technical specifications are THEORETICAL only & intended to be used as a guide.