Model 400W-HD
 
- Digs 9 feet 0 inches (2.74M) deep; up to 72" (183CM) wide
- Engineered for high production of the largest cross-country pipelines
- For the toughest terrain: hills, swamps, rivers, etc.
 
 
 
 
GENERAL SPECIFICATIONS
Weight - Standard Unit less accessories70,000 pounds (31,750kgs)
Ground Bearing Pressure9.8 PSI (7 kgs./CM2) with 27 inch (686MM) pads.
Power UnitTurbocharged diesel D-3306T.

Horsepower

175 HP (130.5KW)....@2200 RPM

TransmissionsMain Transmission

Helical gear unit with high torque capacity. 4 digging wheel speeds..............1.7 to 13.0 RPM forward.

Crawler Transmission

12 speeds forward, 12 speeds reverse,

4-speed main transmission. All speeds available in either direction.

ClutchMain Clutch

14 inch (356MM) two plate

Single lever control, all operations.

Digging Clutch

10 inch (254MM) three plate with split driven plates for easy renewal.

CrawlersCrawler Track

27 inch (686MM) wide rolled section grousers bolt to reinforced dropforged rails, joined with bushed 1 and 1/2 inch (38.1MM) induction hardened pins. 11 lower track rollers. 1000-hour lube service. Anti-friction bearings, sprockets and idlers.

Crawler Differential

          Hypoid unit

          Alloy steel heat treated shafts.

Crawler Kick-Out Clutch8 inch (203.2MM) - 3 plate clutch mainshaft mounted.

Segmented plates for easy servicing.

Permits instantaneous crawler start & stop.

Independent of all other operations.

Hydraulic Steer Brakes18 inch (457MM) hydraulic disc brakes.

Independent control for each track.

BoomSingle reinforced high tensile steel weldment.
TrucksUpper Trucks

4 inch (101.6MM) dia. alloy steel heat treated shafts.

         Adjustable for variable cutting widths.

          Split wheels for ease of replacement.

          Anti-Friction bearing mounted.

Lower Trucks

          Steel weldment body.

          Anti-friction bearing mounted wheels with           double lip seals.

           Bolt-on wheel rims, easily replaced.

Front and Rear Stay Rods

          Straight tubular compression mounted.

HYDRAULIC EQUIPMENT
Hydraulic Boom Hoist CylindersTriple gear pump, pressure loaded wear plates.
Hydraulic PumpsConveyor drive from piston pump for variable belt speed and conveyor shift

Separate dual pumps for independent control of hydraulic boom hoist and conveyor elevating.

Hydraulic ValvesValves equipped with integral direct acting cartridge relief valves.

Factory set and sealed.

Hydraulic ReserviorNo cooling or radiation effect necessary.

      Capacity............................39 gals. (148L)

Equipped with two high-capacity hydraulic filters.

DIGGING WHEEL
Digging DifferentialHypoid gearing.

Heat treated alloy steel shafts.

Digging Wheel RimsOne piece, high tensile 1 and 1/8 inch (28.6MM) steel plate.

Match drilled in pairs.

Drop-forged heat treated alloy steel segments welded to rims.

Buckets18 flush, contour mounted 1 and 1/8 inch (28.6MM) high tensile steel.

Drop forged ROTO-Tooth shanks, easy tap-on, knock-off.

Conveyor DrivePatented planetary gear drives.

Outboard mounted hydraulic motors at each end.

No chains or sprockets.

Discharge Speed....................250-1100 FPM (76M/Min.-335M/Min.).

Speed and direction independently controlled.

Digging Wheel Drive ShaftOne piece-4 inch (101.6MM) diameter.

Heat treated alloy steel on sealed bearings.

Drop forged hubs keyed to shaft accommodate heat treated, alloy steel split drive sprockets.

OPTIONAL EQUIPMENTBucket Fingers

Center Cutters

Bucket Cleaner

Rock Guard

Hydraulic Track Adjusters

         1-1/4 inch (31.8MM) Rims

          1-1/4 inch (31.8MM) Buckets

Slopers

For difficult or unusual digging conditions, alternate tooth patterns available.

Please consult with factory for additional options.
NOTE: In accordance with varying material situations, and the Company's policy of constant product improvement, these specifications are subject to change without notice and without incurring responsibility to units previously sold.

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