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Allis Chalmers 645B vs Allis Chalmers HD-16 Series B
Verdict: Allis Chalmers 645B vs Allis Chalmers HD-16 Series B
The Allis Chalmers 645B and the Allis Chalmers HD-16 Series B are both industrial tractors — here is how they stack up on the figures that matter. Allis Chalmers HD-16 Series B leads on rated power with 172 hp against 151 hp. Allis Chalmers 645B is the newer design (1972 vs 1971). In short: choose the Allis Chalmers HD-16 Series B for outright pulling power, or the Allis Chalmers 645B 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
Allis Chalmers
85
Fit score
Best match
Clear
Allis Chalmers
85
Fit score
Best match
Clear
Rated power
151 hp
172 hp
Confidence
40%
40%
Guide price
—
—
Overview
Manufacturer
Allis ChalmersReference
Allis ChalmersReference
liquid-cooled inlineReference
liquid-cooledReference
Total built
2232Reference
—
Final drives
planetaryReference
—
Drive
—
crawlerReference
Engine
Engine (net)
112.6 kWReference
128.3 kWReference
Displacement
7.0 LReference
13.8 LReference
Bore/Stroke
108 x 127 mmReference
133 x 165 mmReference
Power (net)
112.6 kWReference
145.4 kWReference
Rated RPM
2200Reference
1750 (Power Shift)Reference
Starter type
electricReference
—
Starter
—
electricReference
Starter volts
—
24Reference
Oil capacity
—
60.6 LReference
Coolant capacity
—
64.4 LReference
Transmission
Type
power shiftReference
power shiftReference
Gears
4 forward and reverseReference
2 forward and reverseReference
Transmission
—
Direct DriveReference
Clutch
—
wet discReference
PTO & Hydraulics
Pump flow
268.7 lpmReference
363.4 lpmReference
Steering flow
68.1 lpmReference
—
Hydraulic system
—
159.0 LReference
Capacity
—
159.0 LReference
Dimensions
Wheelbase
294 cmReference
—
Weight
—
18098 kgReference
Length
—
429 cmReference
16HS dozer length
—
521 cmReference
16HSU dozer length
—
540 cmReference
16HA dozer length
—
530 cmReference
16HU dozer length
—
565 cmReference
Height (hood)
—
231 cmReference
Height (ROPS)
—
320 cmReference
Ripper
—
3075 kgReference
Ground clearance
—
33 cmReference
Gauge
—
198 cmReference
Allis Chalmers 645B attachments
Electrical
Charging system
alternatorReference
alternatorReference
Charging amps
—
50Reference
Capacities
Fuel
—
431.5 LReference
Allis Chalmers HD-16 Series B attachments
Allis Chalmers HD-16 Series B Tracks
Width
—
254 cmReference
Length on ground
—
273 cmReference
Area on ground
—
3.1 m²Reference
Ground pressure
—
0.6 barReference
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.