Compare/Caterpillar D3B SA Special Application vs Caterpillar RD8

Caterpillar D3B SA Special Application vs Caterpillar RD8

Verdict: Caterpillar D3B SA Special Application vs Caterpillar RD8

The Caterpillar D3B SA Special Application and the Caterpillar RD8 are both tractors — here is how they stack up on the figures that matter. Caterpillar RD8 leads on rated power with 104 hp against 101 hp. Caterpillar D3B SA Special Application is the lighter machine (13,314 kg vs 15,195 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Caterpillar D3B SA Special Application is the newer design (1985 vs 1935). In short: choose the Caterpillar RD8 for outright pulling power, or the Caterpillar D3B SA Special Application if a tighter budget and lighter footprint matter more. Compare the full spec tables below before booking a demo.

Tune the fit score

Tell us about your operation

Acreage600 acBudgetMain crop / use

Fit & specs

Caterpillar

Fit score

Best match

Clear

Caterpillar

Fit score

Best match

Clear

Rated power

101 hp

104 hp

Confidence

40%

Guide price

—

Overview

Manufacturer

CaterpillarReference

liquid-cooled inlineReference

Diesel 6-speed crawlerMay 19 - 25, 1936Link: Nebraska Tractor Test 257 fileReference

Drive

crawlerReference

Engine

Engine (net)

75.3 kWReference

—

Drawbar (claimed)

60.4 kWReference

—

Displacement

5.2 LReference

20.4 LReference

Bore/Stroke

114 x 127 mmReference

146 x 203 mmReference

Power (net)

75.3 kWReference

—

Fuel system

direct injectionReference

—

Rated RPM

2400Reference

1000Reference

Starter

electricReference

—

Starter volts

12Reference

—

Oil capacity

15.1 LReference

—

Coolant capacity

25.7 LReference

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Drawbar (tested)

—

77.5 kWReference

Belt (tested)

—

88.2 kWReference

Belt power (max)

—

88.2 kWReference

Max power

—

77.5 kWReference

Transmission

Gears

5 forward and 4 reverseReference

6 forward and 2 reverseReference

Clutch

—

dry discReference

Capacities

Fuel

204.4 LReference

—

PTO & Hydraulics

Hydraulic system

57.2 LReference

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Type

gearReference

Capacity

57.2 LReference

—

Pressure

172.4 barReference

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Pump flow

53.0 lpmReference

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Dimensions

Weight

13314 to 13846 poundsReference

15195 kgReference

Length

370 cmReference

—

Shipping weight

6039 kgReference

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Operating weight

6280 kgReference

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Gauge

152 cmReference

198 cmReference

Electrical

Charging system

alternatorReference

—

Charging amps

55Reference

—

Battery volts

12Reference

—

Caterpillar D3B SA Tracks

Width

50 cmReference

Length on ground

182 cmReference

—

Area on ground

1.9 m²Reference

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Caterpillar D3B SA Height

Hood

157 cmReference

—

ROPS

271 cmReference

—

Exhaust

271 cmReference

—

RD8 Serial Numbers

1935

—

1H1Reference

1936

—

1H247Reference

1937

—

1H1497Reference

Caterpillar RD8 Tracks

Test results

Belt fuel use (max)

—

32.6 l/hourReference

Max pull

—

8979 kgReference

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.