Pontoon
Construction
High Strength, Low Alloy, Weathering Cor-Ten plate steel is used
in the fabrication of the Wilco pontoons. Cor-Ten steel has 5 to
8 times the atmospheric corrosion resistance and 20% more tensile
strength than similar size A36 structural plate steel. Each pontoon
has 5 bulkheads, providing 6 independent watertight compartments.
The bottoms of the pontoons are reinforced for rough terrain operation.
Drive
System
Power for the pontoon tracks is provided by the excavator’s
diesel engine and main hydraulic pumps through a hydraulic
swivel. Hydraulic travel motors and brakes are mated to sealed
planetary final drives to provide independent power to each
pontoon track. Standard excavator travel controls are used.
Drive
Chain
Engineering class 3.067 inch pitch, high strength offset side
bar drive chain is used to transfer power from the two stage
planetary final drive gear boxes to the drive shaft sprocket
on each track.
Track
Chain
Three strands of heavy-duty 4-inch pitch marsh buggie track chain
per pontoon. The hardened track chain rollers run in pontoon
channels lined with an abrasive resistant wear bar. Drive and
idler shaft sprockets are flame hardened to match the hardness
of the track chain rollers.
Track
Cleats
Specially designed marine grade, extruded 6061-T6 aluminum alloy
cleats with 2 HDMP wear pads are capable of supporting the pontoon
and its payload. |
Basic
undercarriage weight - 40,000 lb
Upper
Capacity - 30,000 lb
Gross
Weight - 70,000 lb
Pontoons
Dimensions
28 ft L X 5 ft H X 5 ft W.
Assembled
dimensions
31 ft L X 18 ft W X 5.8 ft H
Speed
Up to 2.5 mph on hard dry surface
Up to 1.0 mph in water
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