Highway HH Hydraulic Pressure Diggers

Pressure Drill

The model “HH” has a direct input into the final drive ring gear, eliminating all right angle drive gear assemblies. This gives the customer a digger with less moving parts to maintain.

Hydraulic drive, hydraulic bar
Gas or diesel auxiliary engine
Infinitely variable hydraulic motor
3″ kelly bar design
16″ ring gear
Torque’s to 22,000 ft./lbs.
Digging depths to 25 feet
Fixed, spotter or swing bases
Mounts on single or tandem axle carrier. (specialty carriers available)

AUXILIARY ENGINE: (STANDARD)

John Deere 4045T, Balanced diesel engine 100 HP
OPTIONAL: Highway will work with the following companies:
- CATERPILLAR
- CUMMINS
- DETROIT
- DEUTZ
- FORD
- PERKINS
*Consult factory for models available.

DIGGER DRIVE:

Sundstrand 90 series pump.
Poclain variable speed motor.

FUEL SOURCE: (STANDARD)

Fuel supplied by chassis fuel tank (diesel/ diesel)
OPTIONAL: 50 Gallon fuel tank with mechanical gauge.

TORQUE & R.P.M.: (STANDARD)

0-98 RPM
22,600 ft./lbs. (Maximum)

KELLY BAR:

3″ solid square bar with rounded corners.
4140 tool steel, heat treated
1 1/8″ auger pin hole.

AUGER CAPACITY:

54″ Intermittent
36″ Continuous

HOLE DEPTHS: (STANDARD)

10′
OPTIONAL: Up to 25′
NOTE: all dig depths are based on a 38″ chassis frame height and 36″ long auger.

FINAL DRIVE:

Special design pinion with a 16″ ring gear.
Steel carrier with replaceable bronze thrust plates and remote bar seals.

HYDRAULIC SYSTEM:

100 G.P.M. tandem gear pump.
2,100 P.S.I. main system pressure.
115 gallon oil reservoir
In tank suction strainers
In tank return filter
Hydraulic oil cooler

BOOM LEVELING: (STANDARD)

20 DEGREES LEFT
45 DEGREES RIGHT
15 DEGREES OVER VERTICAL

*Options available consult factory for special applications.

TURNTABLE BASE: (STANDARD)

95″ diameter, 4″ ship & car channel rolled ring.
240 degree rotation
120 series chain run threw hydraulic speed reducer.

OPTIONAL:

#1. 35 Degree Pivot base. 100″ travel with 36″ slide.
#2. Fixed base

OUTRIGGERS: (STANDARD)

Rear “A” frame

OPTIONAL:

Straight down jacks on rear corners
Two sets of “A” Frame outriggers
Spring lockouts
Out & down front outriggers

PIVOT BASE:

Constructed of 6″ Wide flange I-beam 25 lbs./ft.
Full length greasable main frame guides.

MAIN FRAME:

Constructed of 6″ Wide flange I-beam 25 lbs./ft.
36 inches of In/Out slide travel.

DERRICK:

4 3/4″I.D.X 5 1/4″ O.D. seamless hydraulic honed tubing
35,400 ft./lbs. Crowd force. Maximum
22,900 ft./lbs. Retract force. Maximum

MAST:

6″X 6″X 1/4″ Square tubing

TELESCOPING DERRICK: (OPTIONAL)

#1. 6′ Telescoping derrick
#2. 9′ Telescoping derrick

POLE GUIDES: (OPTIONAL)

#1. Mechanical linkage fixed pole guides with side rollers.
#2. Mechanical linkage tilting pole guides with side rollers

WINCH: (OPTIONAL)

Planetary winch 10,000 lb. On first wrap.
125′ of 7/16″ wire rope

OIL TANK:

115 Gallon hydraulic reservoir with baffles & suction strainers.
*Location can be altered, consult factory.

DIGGER WEIGHT:

Base weight digger only 12,000 lbs. (Approx.)

CHASSIS OR CARRIER:

84″ Cab to Axle minimum
25,500 GVW Single axle minimum

OTHER OPTIONS:

Paint colors, Hydraulic tool circuits, Water tanks, Auger storage, Tunnel storage, Tool boxes, Trailer hitches, Panel lights, Work lights, Safety lighting, Grounding systems, Auger adapters & extension, Augers, Tooling, Hydraulic tools, Outrigger pads, Wheel chocks.

Why the Highway HH?

1. Compact design means it can be mounted on nearly any chassis with a GVW of 25,500 lbs. and up.

2. Remote bar seals reduce the amount of dirt exposed to the bar packings and assures straight alignment into the seals.

3. Steel main carrier with replaceable thrust plates for less maintenance costs.

4. Heavy duty pivot base and main frame provide long machine life without breaking or bending.

5. More options and custom configurations available than the competition.