Compare/Allis Chalmers 18-30 vs Allis Chalmers UC

Allis Chalmers 18-30 vs Allis Chalmers UC

Verdict: Allis Chalmers 18-30 vs Allis Chalmers UC

The Allis Chalmers 18-30 and the Allis Chalmers UC are both tractors — here is how they stack up on the figures that matter. Allis Chalmers UC leads on rated power with 19 hp against 18 hp. Allis Chalmers UC is the lighter machine (2,637 kg vs 2,789 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Allis Chalmers 18-30 holds more fuel (94.6 L vs 90.8 L) for longer stints between fills. Allis Chalmers UC is the newer design (1933 vs 1918). In short: choose the Allis Chalmers UC for outright pulling power, or the Allis Chalmers 18-30 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

Allis Chalmers

Fit score

Best match

Clear

Allis Chalmers

Fit score

Best match

Clear

Rated power

18 hp

19 hp

Confidence

40%

Guide price

—

Overview

Manufacturer

Allis ChalmersReference

Drawbar performanceReference

Allis 300 ci 4-speed 2WDJune 16 - August 8, 1935Link: Nebraska Tractor Test 238 fileReference

Total built

1160Reference

1,541 UC CaneReference

Engine

Fuel tank

94.6 LReference

90.8 LReference

Aux. fuel

29.3 LReference

3.8 LReference

Drawbar (claimed)

13.4 kWReference

14.2 kWReference

Belt (claimed)

22.4 kWReference

23.1 kWReference

Plows

3Reference

Drawbar (tested)

15.3 kWReference

15.8 kWReference

Belt (tested)

24.9 kWReference

25.4 kWReference

Displacement

7.6 LReference

5.2 LReference

Bore/Stroke

121 x 165 mmReference

114 x 127 mmReference

Fuel system

Kingston L 1.5" carburetorReference

—

Air cleaner

oil bathReference

—

Rated RPM

830Reference

1200Reference

Coolant capacity

37.9 LReference

22.7 LReference

Belt power (max)

24.9 kWReference

—

Max power

15.3 kWReference

—

Belt power (max):

—

25.4 kWReference

Max power:

—

17.7 kWReference

Transmission

Type

unsynchronized gearReference

non-synchronized gearReference

Gears

2 forward and 1 reverseReference

4 forward and 1 reverseReference

Clutch

hand-operated expanding shoeReference

—

Dimensions

Weight

2789 kgReference

2637 kgReference

Front tire

36x6Reference

24x5Reference

Rear tire

50x12Reference

42x2Reference

Ag front

36x6 steelReference

6.00x16Reference

Ag rear

50x12 steelReference

12.75x24Reference

Length

342 cmReference

368 cmReference

Height

172 cmReference

176 cmReference

Wheelbase

—

220 cmReference

18-30 Serial Numbers

1919

5006Reference

—

1920

5161Reference

—

1921

6015Reference

—

1922

????Reference

—

Location:

front of shifter on transmission caseReference

Rear axle near PTOReference

Capacities

Diameter

33 cmReference

25 cmReference

Width

167 cmReference

205 cmReference

RPM

930Reference

1095Reference

Speed

—

874.78 meters/minReference

Test results

Belt fuel use (max)

17.4 l/hourReference

—

Fuel use

13.2 l/hourReference

—

Max pull

1587 kgReference

—

Belt fuel use (max):

—

15.5 l/hourReference

Max pull:

—

1176 kgReference

Variants

—

standardReference

—

row-cropReference

UC Serial Numbers

1930

—

UC1Reference

1931

—

UC39Reference

1932

—

UC1100Reference

1933

—

UC1232Reference

1934

—

UC1294Reference

1935

—

UC1552Reference

1936

—

UC2001Reference

1937

—

UC2771Reference

1938

—

UC3757Reference

1939

—

UC4547Reference

1940

—

UC4770Reference

1941

—

UC4972Reference

1944

—

5038Reference

1945

—

-Reference

1946

—

-Reference

1947

—

5068Reference

1948

—

5268Reference

1949

—

5526Reference

1950

—

5644Reference

1951

—

5806Reference

1952

—

5939Reference

1953

—

6143Reference

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.