John Deere 9RX 640

The John Deere 9RX 640 is a tractor produced by John Deere. It is equipped with a 826.9 ci 13.6 L engine. The listed engine power is Diesel (gross): 631.6 hp / 471.0 kW. Transmission: e18. Drive type: articulated-crawler. Operating weight: 56320 lbs 25546 kg.

Engine Power

Diesel (gross): 631.6 hp / 471.0 kW

Drive & Traction

articulated-crawler

Fuel & Capacities

400 gal 1514.0 L

Transmission

e18

Operating Weight

56320 lbs 25546 kg

Overview

	2021 - 9R SeriesArticulated Crawler tractor
2021 -
9R Series
Articulated Crawler tractor

Production
Manufacturer	John Deere
Articulated Crawler tractor
Built in Waterloo, Iowa, USA
Original price was $896,199 in 2023

Variants
9R 640	wheeled 4WD
9RX 640	articulated crawler

John Deere 9RX 640 Engine
John Deere 13.6L 6-cyl diesel
Fuel tank	400 gal 1514.0 L
Exhaust fluid (DEF)	31.7 gal 120.0 L
Engine details ...

John Deere 9RX 640 Transmission
18-speed full power shift
Transmission details ...

John Deere 9RX 640 Power
Engine (gross)	631.6 hp 471.0 kW
Engine (max)	681.2 hp 508.0 kW
PTO (claimed)	335 hp 249.8 kW

Mechanical
Drive	articulated-crawler
Final drives	bull gear
Differential lock	electro-hydraulic front and rear
Articulated power steering
Hydraulic wet disc brakes
Cab standard with air-conditioning.

Hydraulics
Type	closed center pressure/flow compensated
Pressure	2900 psi 200.0 bar
Valves	4 to 8
Pump flow	55 gpm 208.2 lpm
	110 gpmOptOptional 416.4 lpm
SCV flow	35 gpm 132.5 lpm
	42 gpm*Optional, 3/4 inch coupler 159.0 lpm

Tractor hitch
Rear Type	IVN/IV
Rear lift (at 24"/610mm)	15000 lbs 6804 kg
	20000 lbs 9072 kg

Power Take-off (PTO)
Rear PTO	independent
Rear PTO Type	1000 (1.75)

Dimensions & Tracks
Wheelbase	162.5 inches 412 cm
Weight	56320 lbs 25546 kg
30-inch tracks
Full dimensions and tracks ...

Electrical
Ground	negative
Charging system	alternator
Charging amps	250
	330 OptOptional
Batteries	3
Battery volts	12

References

9 Series Tractors published in 2022, by John Deere
Operator's Manual 9RX Tractors (OMTR118862) published in 2021

Engine

Engine Detail — 826.9 ci / 13.6 L Diesel

Manufacturer	John Deere JD14
Configuration	turbocharged aftercooled diesel, 6-cylinder 24-valve, liquid-cooled inline
During the first year of production the 9R 640 used a Cummins QSX15 engine.
Displacement	826.9 ci 13.6 L
Bore/Stroke	5.20x6.50 inches 132 x 165 mm
Emissions	Tier IV
Rated Power (gross)	631.6 hp 471.0 kW
Maximum Power (gross)	681.2 hp 508.0 kW
Fuel system	electronic high-pressure common rail
Air cleaner	dry
Compression	15.9:1
Rated RPM	2100
Torque	2179 lb-ft 2954.7 Nm
Torque RPM	1550
Starter	electric
Starter volts	12
Oil capacity	67.6 qts 64.0 L
Oil change	500 h
Coolant capacity	59.7 qts 56.5 L

Transmission

Transmission — e18

Transmission	e18
Type	full power shift
Gears	18 forward and 6 reverse

Dimensions

John Deere 9RX 640 Tracks
Width	30 inches 76 cm
Width	36 inches 91 cm

Dimensions
Wheelbase	162.5 inches 412 cm
Length	346.3 inches 879 cm
Height (cab)	146.3 inches 371 cm
Height (exhaust)	145.1 inches 368 cm
Shipping weight	56320 lbs 25546 kg
Gauge	87/120 inches 220/304 cm

Recommended Implements & Sizing Guide

Engineering recommendations for John Deere 9RX 640 based on its 631.6 HP power envelope and ASAE agricultural standards.

Implement & Operation	Recommended Size	Workload Rating	Engineering Notes
Moldboard PlowPrimary Tillage	8+ Bottom On-Land Hitch8+ 铧重型机外牵引犁	Commercial / Field Scale	High horsepower articulated/4WD field plowing.
Rotary Cutter / MowerMowing & Clearing	15 to 20 ft Batwing4.6 - 6.1 m 宽幅折叠翼	Commercial / Field Scale	Large commercial field and roadside mowing operations.
Rotary TillerSeedbed Prep	90 to 120 in Heavy Duty230 - 300 cm 重型旋耕机	Commercial / Field Scale	Deep intensive seedbed preparation for commercial row crops.
Disc HarrowSecondary Tillage	24 to 36 ft Heavy Duty Field Disc7.3 - 11.0 m 超宽重型整地耙	Commercial / Field Scale	Broad-acre grain tillage for high-drawbar tractors.
Hay BalerHay & Forage	Large Square Baler (3x4 or 4x4)大方捆商用打捆机 (1.2x1.2 m)	Commercial / Field Scale	High-capacity commercial forage harvesting (1000 RPM PTO).

Sizing & Soil Condition NoteActual implement sizing varies depending on local soil conditions (heavy clay vs sandy loam), field slope, and operating speed. Heavy tillage implements may require front ballast weights and wheel weights.

Fluids, Capacities & Working Autonomy

Standard fluid requirements, service intervals, and continuous runtime estimates for John Deere 9RX 640.

Estimated Continuous Field Runtime: 12.2 hrs

Approximately 12.2 hours of continuous field operation at ~75% rated power on a full tank (400 gal / 1514.2 L).

Estimated 75% Load Fuel Burn~32.8 gal/hr (124.3 L/hr)

Engine Crankcase Oil

SAE 15W-40 (Heavy Duty Diesel)

Standard Spec: API CK-4 / CJ-4 Heavy Duty

Service Interval: 150 – 250 Hours

Transmission & Hydraulic System

UTTO (Universal Tractor Transmission Oil)

Standard Spec: ISO VG 46 / 68 (Wet Brake & Trans Compatible)

Service Interval: 600 – 1000 Hours

Engine Cooling System

50/50 Ethylene Glycol Pre-mix

Standard Spec: ASTM D6210 / Heavy-Duty OAT Antifreeze

Service Interval: 2 Years / 1500 Hours