Head to head · Row Crop

Allis Chalmers D21 Series II vs John Deere 6125D

Image not recorded
John DeereModel B

John Deere 6125D

Utility

power
123 hp
displacement
276 ci
Cylinders
4
Forward gears
9
Full 6125D specs
Allis ChalmersAllis Chalmers D21 Series II
vs
John DeereJohn Deere 6125D

How they compare

Headline specs vs. the whole Row Crop

n = 806–1,417

Engine Power

▲ 6125D higher · +2 hp (+2%)
D21 Series II121 hp
6125D123 hp
Median Row Crop Tractor138 hp

D21 Series II is in the 40th percentile; 6125D is in the 41st · 1,206 models

Engine Displacement

▲ D21 Series II higher · +150 ci (+54%)
D21 Series II426 ci
6125D276 ci
Median Row Crop Tractor391 ci

D21 Series II is in the 72nd percentile; 6125D is in the 25th · 1,409 models

Cylinders

▲ D21 Series II higher · +2 (+50%)
D21 Series II6
6125D4
Median Row Crop Tractor6

D21 Series II is in the 50th percentile; 6125D is in the 17th · 1,417 models

Forward Gears

▲ 6125D higher · +1 (+13%)
D21 Series II8
6125D9
Median Row Crop Tractor16

D21 Series II is in the 16th percentile; 6125D is in the 20th · 1,200 models

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

Full comparison

Every spec, side by side

General Information

SpecAllis Chalmers D21 Series IIJohn Deere 6125DDifference
ManufacturerAllis ChalmersJohn Deere—
ModelD21 Series II6125D—
CategoryRow CropUtility—

Engine

SpecAllis Chalmers D21 Series IIJohn Deere 6125DDifference
ManufacturerAllis ChalmersJohn Deere—
Model35004045H PowerTech—
Power Output121hp123hp▲ 6125D+2 hp · +2%
Rated RPM2,200RPM2,100RPM▲ D21 Series II+100 RPM · +5%
Cylinders64▲ D21 Series II+2 · +50%
Displacement426ci276ci▲ D21 Series II+150 ci · +54%
Bore4.3in4.2in▲ D21 Series II+0.1 in · +2%
Stroke5in5inSame

Transmission

SpecAllis Chalmers D21 Series IIJohn Deere 6125DDifference
TypeSliding gear with dry disc clutchNot recorded—

Dimensions & Weight

SpecAllis Chalmers D21 Series IIJohn Deere 6125DDifference
Length160in166in▲ 6125D+6 in · +4%
Width91.3in72in▲ D21 Series II+19.3 in · +27%
Height106in108in▲ 6125D+2 in · +2%
Operating Weight9,502lb8,532lb▲ D21 Series II+970 lb · +11%

Hydraulics

SpecAllis Chalmers D21 Series IIJohn Deere 6125DDifference
System TypeNot recordedOpen center—
Steering TypePowerHydrostatic power—

Power Take-off (PTO)

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

Hitch & Towing

SpecAllis Chalmers D21 Series IIJohn Deere 6125DDifference
Hitch TypeThree-Point HitchCategory 3—
Hitch CategoryIII/IINot recorded—
Hitch PositionRearRearSame

Chassis & Drive

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

Electrical

SpecAllis Chalmers D21 Series IIJohn Deere 6125DDifference
Starter TypeElectricElectricSame

Capacities

SpecAllis Chalmers D21 Series IIJohn Deere 6125DDifference
Coolant7.8gal4.4gal▲ D21 Series II+3.5 gal · +81%

Operator Station

SpecAllis Chalmers D21 Series IIJohn Deere 6125DDifference
TypeOpenNot recorded—

Category context

Both models against the field

Engine Power

median 138 hp
A · 40th percentile (121 hp)B · 41st percentile (123 hp)

Engine Displacement

median 391 ci
A · 72nd percentile (426 ci)B · 25th percentile (276 ci)

Cylinders

median 6
A · 50th percentile (6)B · 17th percentile (4)

Forward Gears

median 16
A · 16th percentile (8)B · 20th percentile (9)

Operating Weight

median 12,307 lb
A · 28th percentile (9,502 lb)B · 23rd percentile (8,532 lb)
A · D21 Series IIB · 6125DMedian Row Crop Tractor
Full spec pageAllis Chalmers D21 Series IIFull spec pageJohn Deere 6125D