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Caterpillar R4 vs Caterpillar RD4
Verdict: Caterpillar R4 vs Caterpillar RD4
The Caterpillar R4 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 31 hp. Caterpillar R4 is the newer design (1938 vs 1935). In short: choose the Caterpillar RD4 for outright pulling power, or the Caterpillar R4 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
31 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
Drive
crawlerReference
crawlerReference
Engine
Drawbar (tested)
23.0 kWReference
26.1 kWReference
Belt (tested)
27.1 kWReference
29.7 kWReference
Displacement
7.6 LReference
5.1 LReference
Bore/Stroke
121 x 165 mmReference
108 x 140 mmReference
Rated RPM
1400Reference
1400Reference
Belt power (max)
27.1 kWReference
29.7 kWReference
Max power
23.0 kWReference
26.1 kWReference
Transmission
Type
gearReference
gearReference
Gears
5 forward and 1 reverseReference
5 forward and 1 reverseReference
Clutch
—
dry discReference
Dimensions
Gauge
—
152 cmReference
Test results
Max pull
2776 kgReference
3561 kgReference
Belt fuel use (max)
—
11.0 l/hourReference
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.