Chamberlain 40KA

The Chamberlain 40KA is a tractor produced by Chamberlain. It is equipped with a 368 ci 6.0 L engine. The listed engine power is Kerosene (listed): 48.5 hp / 36.2 kW. Transmission: sliding gear. Operating weight: 8500 lbs 3855 kg.

Engine Power

Kerosene (listed): 48.5 hp / 36.2 kW

Fuel & Capacities

27.6 gal 104.5 L

Transmission

sliding gear

Operating Weight

8500 lbs 3855 kg

Overview

	1949 - 1954 Standard-tread tractor

Production
Manufacturer	Chamberlain
Standard-tread tractor
Built in Welshpool, Australia
Total built	1,484

Variants
40K	wide gear ratio
40KA	close gear ratio

Chamberlain 40KA Engine
Chamberlain 6.0L 2-cyl kerosene
Fuel tank	27.6 gal 104.5 L
Aux. fuel	4.2 gal 15.9 L
Engine details ...

Chamberlain 40KA Transmission
9-speed
Transmission details ...

Chamberlain 40KA Power
Engine	48.5 hp 36.2 kW
Belt (claimed)	40 hp 29.8 kW

Mechanical
Two-wheel drive
Final drives	bull gear
Steering	mechanical - recirculating ball
Open operator station.

Power Take-off (PTO)
Rear PTO Type	540

Dimensions & Tires
Wheelbase	83 inches 210 cm
Weight	8500 lbs 3855 kg
Front tire	7.50x18
Rear tire	15.00x30
Full dimensions and tires ...

Belt Pulley
Diameter	13 inches 33 cm
Width	7 inches 17 cm
RPM	810
Speed	2740 ft/min 835.15 meters/min

Engine

Engine Detail — 368 ci / 6.0 L Kerosene

Manufacturer	Chamberlain
Fuel Type	Kerosene
Configuration	2-cylinder, liquid-cooled horizontally-opposed
Displacement	368 ci 6.0 L
Bore/Stroke	6.125x6.250 inches 156 x 159 mm
Power	48.5 hp 36.2 kW
Cooling system	thermosiphon
Rated RPM	1200
Starter volts	12

Transmission

Transmission — sliding gear

Transmission	sliding gear
Gears	9 forward and 3 reverse

Dimensions

Chamberlain 40KA Tires
Ag front	7.50x18
Ag rear	15.00x30

Dimensions
Wheelbase	83 inches 210 cm
Length	135 inches 342 cm
Width	68 inches 172 cm
Height	90 inches 228 cm
Weight	8500 lbs 3855 kg

Photos

Chamberlain 40KA tractor photo

Recommended Implements & Sizing Guide

Engineering recommendations for Chamberlain 40KA based on its 48.5 HP power envelope and ASAE agricultural standards.

Implement & Operation	Recommended Size	Workload Rating	Engineering Notes
Moldboard PlowPrimary Tillage	2 to 3 Bottom (14-16")2 - 3 铧 (35-40 cm)	Medium Duty	Standard utility farm tillage.
Rotary Cutter / MowerMowing & Clearing	6 ft (72 in)1.8 m	Medium Duty	Medium pasture clearing; rear slip-clutch recommended.
Rotary TillerSeedbed Prep	66 to 72 in165 - 180 cm	Medium Duty	Standard utility tiller; slip clutch protection required.
Disc HarrowSecondary Tillage	7 to 8 ft Tandem Disc2.1 - 2.4 m 对开双排耙	Medium Duty	Field leveling and clod breaking behind plows.
Hay BalerHay & Forage	Small Square Baler (14x18")小方捆打捆机 (36x46 cm)	Medium Duty	Classic 2-string baler for horse and small livestock hay.

Sizing & Soil Condition NoteActual implement sizing varies depending on local soil conditions (heavy clay vs sandy loam), field slope, and operating speed. Heavy tillage implements may require front ballast weights and wheel weights.

Fluids, Capacities & Working Autonomy

Standard fluid requirements, service intervals, and continuous runtime estimates for Chamberlain 40KA.

Estimated Continuous Field Runtime: 10.9 hrs

Approximately 10.9 hours of continuous field operation at ~75% rated power on a full tank (27.6 gal / 104.5 L).

Estimated 75% Load Fuel Burn~2.5 gal/hr (9.5 L/hr)

Engine Crankcase Oil

SAE 15W-40 (Heavy Duty Diesel)

Standard Spec: API CK-4 / CJ-4 Heavy Duty

Service Interval: 150 – 250 Hours

Transmission & Hydraulic System

UTTO (Universal Tractor Transmission Oil)

Standard Spec: ISO VG 46 / 68 (Wet Brake & Trans Compatible)

Service Interval: 600 – 1000 Hours

Engine Cooling System

50/50 Ethylene Glycol Pre-mix

Standard Spec: ASTM D6210 / Heavy-Duty OAT Antifreeze

Service Interval: 2 Years / 1500 Hours