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Chamberlain 40KA tractor

Chamberlain 40KA Specs


Manufacturer Chamberlain
Type Standard-tread tractor
Factory Welshpool, Australia
Total built 1,484


40K wide gear ratio
40KA close gear ratio


Engine Chamberlain 6.0L 2-cyl kerosene
Fuel tank 27.6 gal
Aux. fuel 4.2 gal

Dimensions & Tires

Wheelbase 83 inches
Weight 8500 lbs
Front tire 7.50x18
Rear tire 15.00x30

Belt Pulley

Diameter 13 inches
Width 7 inches
RPM 810
Speed 2740 ft/min


Engine 48.5 hp
Belt (claimed) 40 hp


Chassis 4x2 2WD
Final drives bull gear
Steering mechanical - recirculating ball
Cab Open operator station.
Transmission 9-speed

Power Take-off (PTO)

Rear RPM 540

Serial Numbers

10/1950 404
1/1951 471
12/1951 1226
12/1952 1490
12/1953 1834
Final 1887

Chamberlain 40KA engine specs

Engine Detail

Engine Detail
  • Chamberlain
  • kerosene
  • 2-cylinder
  • liquid-cooled horizontally-opposed
Displacement 368 ci
Bore/Stroke 6.125x6.250 inches
Power 48.5 hp
Cooling system thermosiphon
Rated RPM 1200
Starter volts 12

Chamberlain 40KA transmission


Transmission sliding gear
Gears 9 forward and 3 reverse

Chamberlain 40KA dimensions


Ag front 7.50x18
Ag rear 15.00x30


Wheelbase 83 inches
Length 135 inches
Width 68 inches
Height 90 inches
Weight 8500 lbs

Chamberlain 40KA photos

Chamberlain 40KA videos