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Huber 21-39 Super Four Specs ( 1929-Present )

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Overview

The Huber 21-39 Super Four is a standard-tread farm tractor built in Marion, Ohio, powered by a 7.6L 4-cylinder Stearns gasoline engine. This 8,450 lb machine features a two-speed gear transmission and a 4-plow capacity, making it a robust choice for heavy-duty agricultural tasks.

Ideal Applications

Plowing Operations: With a claimed drawbar power of 21 hp and a specific capacity for 4 plows, this tractor is built for primary tillage and breaking ground.
Stationary Belt Work: The integrated 15.5-inch belt pulley delivers 39 claimed belt horsepower at 695 RPM, ideal for powering threshers and other belt-driven farm equipment.
Heavy Draft Tasks: An operating weight of 8,450 lbs combined with large 56-inch steel rear wheels provides the necessary mass and traction for demanding two-wheel drive farm applications.

Production

Description Standard-tread tractor / Built in Marion, Ohio, USA
Manufacturer Huber

Engine

Engine type Stearns 7.6L 4-cyl gasoline
Fuel tank 40 gal (151.4 L)
Air cleaner oil spray
Bore/Stroke 4.75x6.50 inches (121 x 165 mm)
Coolant capacity 40 qts (37.9 L)
Description Stearns / gasoline / 4-cylinder / liquid-cooled
Displacement 461 ci (7.6 L)
Rated RPM 1000
Belt (claimed) 39 hp (29.1 kW)
Drawbar (claimed) 21 hp (15.7 kW)
Plows 4

Transmission

Clutch dry disc
Gears 2 forward and 1 reverse
Transmission type 2-speed gear
Type gear

Mechanical

Cab Open operator station.
Description Manual steering
Drive type Two-wheel drive

Dimensions & Tires

Height (hood) 62 inches (157 cm)
Length 158 inches (401 cm)
Operating weight 8450 lbs (3832 kg)
Wheelbase 93 inches (236 cm)
Width 76 inches (193 cm)
Front tire 40x5
Rear tire 56x14
Weight 8450 lbs (3832 kg)
Wheelbase 93 inches (236 cm)
Ag front 40x5 (steel)
Ag rear 56x14 (steel)

Belt Pulley

Diameter 15.5 inches (39 cm)
RPM 695
Width 8 inches (20 cm)