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Hart-Parr 28-44

Hart-Parr 28-44 tractor
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The Hart-Parr 28-44 is a standard-tread farm tractor produced from 1930 to 1937 by Hart-Parr, a part of Oliver, built in Charles City, Iowa, USA. It features a 7.3L 4-cylinder liquid-cooled kerosene engine, a 3-speed gear transmission, and two-wheel drive with manual steering. The tractor delivers a claimed drawbar power of 22 hp and belt power of 44 hp, with tested drawbar and belt powers of 34.21 hp and 49.04 hp respectively. It has a rear PTO type of 540 rpm. Dimensions include an 80-inch wheelbase, 125.75-inch length, 65-inch width, and 59.5-inch hood height. The operating weight ranges from 5565 to 6415 lbs. Tires are steel with sizes 29x6 front and 46x12 rear. The tractor is suitable for 3-5 plows and includes a belt pulley with a diameter of 16.75 inches and width of 8.25 inches.
Hart-Parr 28-44tractorfarm tractorspecificationsenginetransmissionpowerdimensionsHart-Parr tractors
Power48 hp[B]
Founded1930 - 1937
Model28-44

Technical Specifications

Detailed specifications and technical data for Hart-Parr 28-44

Power

Plows:3-5
Belt (tested):49.04 hp (36.6 kW)
Belt (claimed):44 hp (32.8 kW)
Drawbar (tested):34.21 hp (25.5 kW)
Drawbar (claimed):22 hp (16.4 kW)

Engine

Cooling:liquid-cooled
Cylinders:4-cylinder
Fuel tank:34 gal (128.7 L)
Fuel type:kerosene
Rated RPM:1125
Bore/Stroke:4.75x6.25 inches (121 x 159 mm)
Displacement:443 ci (7.3 L)
Engine Detail:Hart-Parr 7.3L 4-cyl kerosene
Coolant capacity:42 qts (39.7 L)

Mechanical

Drive:Two-wheel drive
Steering:Manual steering
Operator station:Open operator station

Production

Type:Standard-tread tractor
Built in:Charles City, Iowa, USA
Years produced:1930 - 1937

Belt Pulley

RPM:596
Speed:2600 ft/min (792.48 meters/min)
Width:8.25 inches (20 cm)
Diameter:16.75 inches (42 cm)

Transmission

Type:gear
Gears:3 forward and 1 reverse

Dimensions & Tires

Width:65 inches (165 cm)
Length:125.75 inches (319 cm)
Rear tire:46x12 (steel)
Wheelbase:80 inches (203 cm)
Front tire:29x6 (steel)
Height (hood):59.5 inches (151 cm)
Shipping weight:5565 lbs (2524 kg)
Operating weight:6415 lbs (2909 kg)

Power Take-off (PTO)

Rear PTO Type:540

Related Models

Hart-Parr 90

Model:90

Hart-Parr 18-28

Model:18-28