John Deere 6120M

Last Updated: July 2024

Overview

The John Deere 6120M is a utility tractor with a 4x2 2WD chassis and optional 4WD. It features a John Deere PowerTech PSS engine (Serial No. CD4045U029280) with 4 cylinders, 276 ci displacement, and a rated power of 112.0 hp at 1800 rpm. The engine is turbocharged aftercooled and meets Tier IV emissions standards. The CommandQuad transmission offers 24 forward and 24 reverse gears. The tractor has a three-point hitch with a capacity of 8540 lbs and an open center hydraulic system. It weighs 12050 lbs and is equipped with 420/70R24 front tires and 480/70R38 rear tires.

Key Specifications

Category: Utility

Power Output: 112.0

Transmission: CommandQuad

Drive Type: 2WD, 4WD optional

Operating Weight: 12050

Fuel Type: Diesel

John Deere 6120M vs. Similar Tractors

Operating Weight

Average

Greater than 65% of similar tractors.

Technical Specifications

Engine

Manufacturer: John Deere
Model: PowerTech PSS (Serial No. CD4045U029280)
Cooling Type: Liquid-cooled
Cylinder Orientation: Inline
Valve Configuration: OHV
Fuel Type: Diesel
Induction Type: Turbocharged aftercooled
Cylinders: 4
Displacement (ci): 276
Bore (in): 4.15
Stroke (in): 5
Rated RPM: 2100
Power Output (hp): 112.0

Transmission

Type: CommandQuad
Forward Gears: 24
Reverse Gears: 24
Total Gears: 48

Dimensions

Length (in): 176.6
Width (in): 100.4
Height (in): 113.1
Operating Weight (lb): 12050

Power Take-Off (PTO)

PTO Type: Independent
PTO Speed 1 (rpm): -
PTO Speed 2 (rpm): Unknown, no PTO speeds provided
PTO Speed 3 (rpm): Unknown, no PTO speeds provided

Miscellaneous

Chassis: 4x2 2WD
Drive Type: 2WD, 4WD optional
Steering Type: Power
Coolant Capacity (qts): 23.25
Front Tire Diameter (in): Unknown, given as size not diameter
Front Tire Width (in): Unknown, given as size not width
Rear Tire Diameter (in): Unknown, given as size not diameter
Rear Tire Width (in): Unknown, given as size not width
Front/Rear Rim Diameter (in): Unknown, no rim sizes were provided
Tire Type: Agricultural
Manufacture - End Year: -
Hitch Type: Three-point
Hitch Category: 3
Hitch Position: Rear
Hitch Capacity (lb): 8540
Operator Station Type: Cab
Starter Type: Electric
Brake Type: -
Hydraulic System Type: Open Center

Test Results

Nebraska Tractor Test Laboratory - Test Date: April to June, 2020

Maximum Power and Fuel Consumption

Maximum Power: 112.0 HP (83.5 kW) at 1800 rpm
Fuel Consumption at Maximum Power: 6.86 Gal/hr (25.97 l/h) with a fuel efficiency of 0.422 lb/hp.hr (0.257 kg/kW.h)
DEF Consumption: 0.45 Gal/hr (1.72 l/h)

Drawbar Performance

Power at Rated Engine Speed (10th Gear): 87.6 HP (65.3 kW) with a drawbar pull of 6055 lbs (26.93 kN) and a speed of 5.42 mph (8.73 km/h)
Fuel Consumption at Rated Speed: 0.519 lb/hp.hr (0.316 kg/kW.h) with a fuel efficiency of 13.24 Hp.hr/gal (2.61 kW.h/l)

Torque and Engine Performance

Maximum Torque: 358 lb.-ft. (485 Nm) at 1600 rpm
Torque Rise: 50.4% with a power increase at 1800 rpm of 17.8%

Hydraulic Performance

Maximum Force Exerted: 8540 lbs (38.0 kN) at hitch points with 75 mm lift cylinders
Pump Delivery Rate: 31.9 GPM (120.8 l/min) at minimum pressure and rated engine speed
Hydraulic Power: 45.9 HP (34.2 kW) at delivery pressure of 2695 psi (186 bar)

Overall Efficiency

Fuel Efficiency at Standard PTO Speed (1000 rpm): 15.74 Hp.hr/gal (3.10 kW.h/l)
Fuel Consumption: 6.84 Gal/hr (25.90 l/h) at 1962 rpm

NTTL.(2022). OECD tractor test 3215 for John Deere 6120M CommandQuad Diesel. Lincoln, NE:Nebraska Tractor Test Laboratory. Retrieved from http://tractortestlab.unl.edu