Upton

Upton HT-14/350

The Upton HT-14/350 is one of the largest two-wheel drive tractors ever built. The rear axle has a 65,000 pound capacity and the tractor was originally equipped with 20-ply earthmover tires. Over 80% of its 25-ton weight was carried on the rear.
Power-
Founded-
ModelHT-14/350

Technical Specifications

Detailed specifications and technical data for Upton HT-14/350

Power
Engine350 hp (261.0 kW)
Tires
Rear tire33.5x33
Front tire18.4x26
Engine
Typeaftercooled turbocharged diesel
ModelCummins NTC-350
Power350 hp (261.0 kW)
Coolingliquid-cooled
Cylinders6-cylinder
Rated RPM2100
Bore/Stroke5.50x6.00 inches (140 x 152 mm)
Compression14:1
Displacement855 ci (14.0 L)
Capacity
Fuel350 gal (1324.8 L)
Hydraulic system56 gal (212.0 L)
Dimensions
Width141 inches (358 cm)
Height137 inches (347 cm)
Length258 inches (655 cm)
Weight40,480 lbs (18361 kg)
Wheelbase154 inches (391 cm)
Ground clearance19 inches (48 cm)
Operating weight51,000 lbs (23133 kg)
Hydraulics
Capacity56 gal (212.0 L)
Pressure2031 psi (140.0 bar)
Total flow48.08 gpm (182.0 lpm)
Mechanical
Cabstandard with air-conditioning and stereo.
DriveTwo-wheel drive
BrakesWestinghouse drums brakes
Production
TypeStandard-tread tractor
Year1978
NotesThe Upton HT-14/350 is one of the largest two-wheel drive tractors ever built. The rear axle has a 65,000 pound capacity and the tractor is was originally equipped with 20-ply earthmover tires. Over 80% of its 25-ton weight was carried on the rear.
Built inCorowa, New South Wales, Australia
Total built1
Original price$70,000 (1978)
Transmission
TypeSpicer
Gears14 forward and 4 reverse