Compare/Allis Chalmers D-12 vs Allis Chalmers I40

Allis Chalmers D-12 vs Allis Chalmers I40

Verdict: Allis Chalmers D-12 vs Allis Chalmers I40

The Allis Chalmers D-12 and the Allis Chalmers I40 are both industrial tractors — here is how they stack up on the figures that matter. Allis Chalmers I40 leads on rated power with 41 hp against 39 hp. Allis Chalmers D-12 is the lighter machine (1,451 kg vs 3,980 kg), which helps on soft ground and transport, while the heavier model carries more ballast for traction-limited draft work. Allis Chalmers I40 is the newer design (1964 vs 1959). In short: choose the Allis Chalmers I40 for outright pulling power, or the Allis Chalmers D-12 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

39 hp

41 hp

Confidence

40%

Guide price

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Overview

Manufacturer

Allis ChalmersReference

Allis D12 with 10x24 rear tires.Reference

With 14.9x24 rear tires.Reference

Final drives

—

bull gearReference

Engine

Fuel tank

47.3 LReference

Engine (net)

29.1 kWReference

—

Drawbar (claimed)

22.8 kWReference

—

Displacement

2.4 LReference

Bore/Stroke

89 x 98 mmReference

Power (net)

29.1 kWReference

—

Air cleaner

oil bathReference

—

Compression

7.5:1Reference

Rated RPM

1650Reference

2000Reference

Torque

185.8 NmReference

183.1 NmReference

Firing order

1-2-4-3Reference

Starter volts

12Reference

Oil capacity

4.3 LReference

7.6 LReference

Coolant capacity

7.6 LReference

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Engine (gross)

—

30.3 kWReference

Power (gross)

—

30.3 kWReference

Torque RPM

—

1200Reference

Transmission

Gears

4 forward and 1 reverseReference

8 forward and 2 reverseReference

Clutch

—

228.6mm dry discReference

Transmission

—

Dual RangeReference

PTO & Hydraulics

PTO (claimed)

26.3 kWReference

—

Type

sliding gearReference

shuttleReference

Pressure

103.4 barReference

137.9 barReference

Valves

1 or 2Reference

—

Pump flow

13.5 lpmReference

—

Rear Type

IReference

Rear PTO Type

540Reference

540 (1.375)Reference

Engine RPM

540@1650Reference

Total flow

—

64.3 lpmReference

Control

—

position and draft controlReference

Rear PTO

—

independentReference

Dimensions

Wheelbase

200 cmReference

Weight

1136 kgReference

3980 to 7400 poundsReference

Ag front

6.00x16Reference

—

Ag rear

12.4x24Reference

—

Length

307 cmReference

301 cmReference

Height (hood)

133 cmReference

139 cmReference

Height (exhaust)

194 cmReference

—

Shipping weight

1451 kgReference

—

Clearance (front axle)

53 cmReference

—

Clearance (rear axle)

55 cmReference

—

Front tread

125 to 203 cmReference

137/143 cmReference

Rear tread

132 to 201 cmReference

127/154 cmReference

Front tire

—

7.50x16Reference

Rear tire

—

14.9x24Reference

Lawn/turf rear

—

12.4x24Reference

Industrial front

—

7.50x16Reference

Industrial rear

—

14.9x24Reference

Height (steering wheel)

—

154 cmReference

Ground clearance

—

50 cmReference

Allis Chalmers D-12 attachments

Capacities

RPM

1220Reference

—

Speed

779.07 meters/minReference

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Attachment overview

Allis-Chalmers Mark I Backhoe

Backhoe type

Allis-Chalmers Mark TEN BackhoeReference

Allis-Chalmers BackhoeReference

Transport height

322 cmReference

320 cmReference

Digging depth

304 cmReference

309 cmReference

Reach from pivot

426 cmReference

Loading height

281 cmReference

—

Swing Arc

200°Reference

—

Allis-Chalmers Mark TEN Backhoe

Speeds

Variants

D10

—

ag tractorReference

Allis Chalmers I40 attachments

Allis-Chalmers Backhoe

Bucket width

—

91 cmReference

2-Foot flat digging depth

—

304 cmReference

Bucket force

—

2494 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.