Head to head · Row Crop

Allis Chalmers D21 Series II vs John Deere 6125J

Image not recorded
John DeereModel B

John Deere 6125J

Utility

power
125 hp
displacement
414 ci
Cylinders
6
Forward gears
12
Full 6125J specs
Allis ChalmersAllis Chalmers D21 Series II
vs
John DeereJohn Deere 6125J

How they compare

Headline specs vs. the whole Row Crop

n = 1,140–1,417

Engine Power

▲ 6125J higher · +4 hp (+3%)
D21 Series II121 hp
6125J125 hp
Median Row Crop Tractor138 hp

D21 Series II is in the 40th percentile; 6125J is in the 42nd · 1,206 models

Engine Displacement

▲ D21 Series II higher · +12 ci (+3%)
D21 Series II426 ci
6125J414 ci
Median Row Crop Tractor391 ci

D21 Series II is in the 72nd percentile; 6125J is in the 69th · 1,409 models

Cylinders

= Effectively tied
D21 Series II6
6125J6
Median Row Crop Tractor6

D21 Series II is in the 50th percentile; 6125J is in the 50th · 1,417 models

Forward Gears

▲ 6125J higher · +4 (+50%)
D21 Series II8
6125J12
Median Row Crop Tractor16

D21 Series II is in the 16th percentile; 6125J is in the 27th · 1,200 models

D21 Series II (A)6125J (B)Median Row Crop Tractor

Full comparison

Every spec, side by side

General Information

SpecAllis Chalmers D21 Series IIJohn Deere 6125JDifference
ManufacturerAllis ChalmersJohn Deere—
ModelD21 Series II6125J—
CategoryRow CropUtility—

Engine

SpecAllis Chalmers D21 Series IIJohn Deere 6125JDifference
ManufacturerAllis ChalmersJohn Deere—
Model35006068 PowerTech—
Power Output121hp125hp▲ 6125J+4 hp · +3%
Rated RPM2,200RPM2,300RPM▲ 6125J+100 RPM · +5%
Cylinders66Same
Displacement426ci414ci▲ D21 Series II+12 ci · +3%
Bore4.3in4.2in▲ D21 Series II+0.1 in · +2%
Stroke5in5inSame

Transmission

SpecAllis Chalmers D21 Series IIJohn Deere 6125JDifference
TypeSliding gear with dry disc clutchFully synchronized / Partial power shift—

Dimensions & Weight

SpecAllis Chalmers D21 Series IIJohn Deere 6125JDifference
Length160in194in▲ 6125J+34 in · +21%
Width91.3inNot recorded—
Height106in108in▲ 6125J+2 in · +2%
Operating Weight9,502lb9,678lb▲ 6125J+176 lb · +2%

Hydraulics

SpecAllis Chalmers D21 Series IIJohn Deere 6125JDifference
System TypeNot recordedPressure compensated—
Steering TypePowerPowerSame

Power Take-off (PTO)

SpecAllis Chalmers D21 Series IIJohn Deere 6125JDifference
TypeIndependentNot recorded—
Speed 11,000rpmNot recorded—

Hitch & Towing

SpecAllis Chalmers D21 Series IIJohn Deere 6125JDifference
Hitch TypeThree-Point HitchCategory II—
Hitch CategoryIII/IICategory 3—
Hitch PositionRearRearSame

Chassis & Drive

SpecAllis Chalmers D21 Series IIJohn Deere 6125JDifference
Chassis Type4x2 2WD4x4 MFWD 4WD—
Drive Type2WD4WD—
Steering TypePowerPowerSame
Brake TypeBand actuated discNot recorded—

Electrical

SpecAllis Chalmers D21 Series IIJohn Deere 6125JDifference
Starter TypeElectricElectricSame

Capacities

SpecAllis Chalmers D21 Series IIJohn Deere 6125JDifference
Coolant7.8gal6.6gal▲ D21 Series II+1.2 gal · +18%

Operator Station

SpecAllis Chalmers D21 Series IIJohn Deere 6125JDifference
TypeOpenNot recorded—

Category context

Both models against the field

Engine Power

median 138 hp
A · 40th percentile (121 hp)B · 42nd percentile (125 hp)

Engine Displacement

median 391 ci
A · 72nd percentile (426 ci)B · 69th percentile (414 ci)

Cylinders

median 6
A · 50th percentile (6)B · 50th percentile (6)

Forward Gears

median 16
A · 16th percentile (8)B · 27th percentile (12)

Operating Weight

median 12,307 lb
A · 28th percentile (9,502 lb)B · 29th percentile (9,678 lb)
A · D21 Series IIB · 6125JMedian Row Crop Tractor
Full spec pageAllis Chalmers D21 Series IIFull spec pageJohn Deere 6125J