671SERIES DIG-R-TACH
®
|
MODEL |
671 Series 16 |
671 Series 24 |
Hydraulic System Requirements |
5 -20 GPM (19-76 lit/min) flow range. 15GPM (57
lit/min) optimum flow rate. 1500-3000 PSI
(105-210 kg.cm2) auxiliary hydraulic system
pressure relief valve setting range |
15-25 GPM
(57-95 lit/min) flow range. 20GPM (76 lit/min)
optimum flow rate. 1500-3000 PSI (105-210
kg/cm2) auxiliary hydraulic system pressure
relief valve setting range. |
Auxiliary hydraulic system
flow rate determines auger rotational speed.
Auxiliary hydraulic system pressure relief valve
setting determines actual digging torque
produced. Minimal flow rates and relief valve
settings may not produce satisfactory digging
performance for specific auger diameters and
soil types. Minimum
oil viscosity is 50 SSU with a minimum of .125
percent zinc antiwear additives. Hydraulic
system must have sufficient heat rejection
capacity to limit maximum oil temperature to 200
°F (93°C) at maximum ambient temperature.
|
Transmission |
Drive System |
Auxiliary hydraulic system of carrier vehicle
serves as power. Low speed, high torque
hydraulic motor transfers torque to auger
driveshaft though roller chain reduction.
Forward and reverse auger direction controlled
by auxiliary hydraulic valve foot pedal or hand
control. Series 16 incorporates dual sprockets
clusters that provide high/low auger speed
selection. |
Driveshaft Connection To
Auger |
2" (51 mm) industry standard
hexagon |
Maximum Drilling Torque |
High Speed: 665 ft. lbs. (900 N.m.) at 2500 PSI
(175 kg/cm2) |
2018 ft.
lbs. (2724 N.m.) at 2500 PSI (175 kg/cm2) |
Low Speed: 1330 ft. lbs. (1800 N.m.) at 2500 PSI
(175 kg/cm2) |
|
Input
|
Auger RPM
|
GPM |
|
Lit/Min |
Low |
|
High |
5 |
|
(19) |
- |
|
58 |
6 |
|
(23) |
- |
|
70 |
8 |
|
30) |
- |
|
93 |
10 |
|
(38) |
57 |
|
116 |
12 |
|
(45) |
68 |
|
139 |
15 |
|
(57) |
85 |
|
174 |
18 |
|
(68) |
102 |
|
- |
20 |
|
(76) |
113 |
|
- |
|
Input
|
Auger RPM
|
GPM |
|
Lit/Min |
|
High |
|
15 |
|
(57) |
|
49 |
|
18 |
|
(68) |
|
58 |
|
20 |
|
(76) |
|
65 |
|
22 |
|
(83) |
|
71 |
|
25 |
|
(95) |
|
81 |
|
- |
|
- |
|
- |
|
- |
|
- |
|
- |
|
- |
|
- |
|
- |
|
|
Auger |
Design |
Auger construction features Pengo® type,
cast-steel boring heads, forged-steel teeth for
maximum digging performance and versatility.
Think, cross-sectioned helicoid or sectional
fighting delivers strength and wear resistance.
Fighting pitch is set to produce cleaner, more
useable holes in sandy or granular-type soils.
All boring head wear parts are field
replaceable. |
Lead Auger and Auger
Extension Length |
Available in industry
standard lengths and diameters. Mounted DIG-R-TACH,
auger/extensions and excavated soil can result
in substantial weight. Refer to carrier vehicle
lift height and operational center of gravity
envelope information to determine maximum
allowable auger length and weight combinations.
|
General |
|
Plumb Line Mechanism |
Both Series 16 and 24 use
double-jointed, universal-joint swivel with
full-length sleeved pins |
Basic Weight |
285 lbs. (130 kg) |
Frame |
Unitized, welded steel plate |