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Caterpillar R3 vs Caterpillar RD4
Verdict: Caterpillar R3 vs Caterpillar RD4
The Caterpillar R3 and the Caterpillar RD4 are both tractors — here is how they stack up on the figures that matter. Caterpillar RD4 leads on rated power with 35 hp against 34 hp. Caterpillar RD4 is the newer design (1935 vs 1934). In short: choose the Caterpillar RD4 for outright pulling power, or the Caterpillar R3 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
62
Fit score
Best match
Clear
Caterpillar
62
Fit score
Best match
Clear
Rated power
34 hp
35 hp
Confidence
40%
40%
Guide price
—
—
Overview
Manufacturer
CaterpillarReference
CaterpillarReference
Gear 1 used for pull test.Reference
Gear 1 used for pull test.Reference
Total built
60Reference
—
Drive
crawlerReference
crawlerReference
Engine
Drawbar (tested)
25.7 kWReference
26.1 kWReference
Belt (tested)
31.3 kWReference
29.7 kWReference
Displacement
5.7 LReference
5.1 LReference
Bore/Stroke
114 x 140 mmReference
108 x 140 mmReference
Fuel system
Ensign carburetorReference
—
Air cleaner
oil bathReference
—
Rated RPM
1100Reference
1400Reference
Belt power (max)
31.3 kWReference
29.7 kWReference
Max power
25.7 kWReference
26.1 kWReference
Transmission
Type
gearReference
gearReference
Gears
3 forward and 1 reverseReference
5 forward and 1 reverseReference
Clutch
dry discReference
dry discReference
Dimensions
Gauge
—
152 cmReference
Test results
Belt fuel use (max)
18.5 l/hourReference
11.0 l/hourReference
Max pull
3457 kgReference
3561 kgReference
RD4 Serial Numbers
1936
—
4G1Reference
1937
—
4G3663Reference
1938
—
4G8858Reference
1939
—
4G9912Reference
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.