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Caterpillar Diesel Forty vs Caterpillar Forty

Verdict: Caterpillar Diesel Forty vs Caterpillar Forty

The Caterpillar Diesel Forty and the Caterpillar Forty are both tractors — here is how they stack up on the figures that matter. Caterpillar Diesel Forty leads on rated power with 50 hp against 49 hp. Caterpillar Forty is the lighter machine (6,180 kg vs 7,095 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. In short: choose the Caterpillar Diesel Forty for outright pulling power, or the Caterpillar Forty if a tighter budget and lighter footprint matter more. Compare the full spec tables below before booking a demo.

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Fit & specs
Caterpillar Diesel Forty Tractor
Caterpillar
62
Fit score
Best match
Clear
Caterpillar Forty Tractor
Caterpillar
62
Fit score
Best match
Clear
Rated power
50 hp
49 hp
Confidence
40%
40%
Guide price
Overview
Manufacturer
CaterpillarReference
CaterpillarReference
Gear 1 used for pull test.Reference
Gasoline (1000 RPM) 4-speed crawlerSeptember 18 - 23, 1935Link: Nebraska Tractor Test 245 fileReference
Drive
crawlerReference
crawlerReference
Variants
Forty
gas engineReference
gas engineReference
Diesel Forty
diesel engineReference
diesel engineReference
Engine
Fuel tank
170.3 LReference
Drawbar (tested)
37.6 kWReference
36.5 kWReference
Belt (tested)
41.8 kWReference
42.1 kWReference
Displacement
10.2 LReference
8.0 LReference
Bore/Stroke
146 x 203 mmReference
130 x 165 mmReference
Rated RPM
1000Reference
850Reference
Belt power (max)
36.2 kWReference
42.1 kWReference
Max power
31.9 kWReference
36.5 kWReference
Transmission
Type
gearReference
gearReference
Gears
4 forward and 1 reverseReference
4 forward and 1 reverseReference
Dimensions
Weight
7095 kgReference
6180 kgReference
Gauge
187 cmReference
142 cmReference
Diesel Forty Serial Numbers
1934
3G1Reference
5G1Reference
1935
3G335Reference
5G43Reference
1936
3G1957Reference
5G434Reference
Final
3G1971Reference
5G584Reference
Caterpillar Diesel Forty Tracks
Width
40 cmReference
40 cmReference
Test results
Belt fuel use (max)
12.9 l/hourReference
26.1 l/hourReference
Max pull
4396 kgReference
4293 kgReference
Forty Serial Numbers
Caterpillar Forty Tracks

Fit score weighs budget, operation size, crop match and data confidence against the details above. It’s guidance, not advice — always confirm with a dealer demo.

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