The John Deere 9R 640 tractor has 631.6 hp engine horsepower and 335 hp PTO horsepower.
Engine horsepower631.6 hp
PTO horsepower335 hp
Drawbar horsepower335 hp
Rated RPM2,100 rpm
Torque2,179 lb-ft
Operating weight46,680 lb
John Deere 9R 640 Horsepower Details
Engine horsepower
631.6 hp
PTO horsepower
335 hp
Drawbar horsepower
335 hp
Rated engine RPM
2,100 rpm
Engine torque
2,179 lb-ft
Engine displacement
13.6 L
Operating weight
46,680 lb
Horsepower Comparison Chart
Engine horsepower comparison
This model
631.6 hp
Average
99 hp
Low
5 hp
High
640 hp
PTO horsepower comparison
This model
335 hp
Average
86.2 hp
Low
5 hp
High
490 hp
Drawbar horsepower comparison
This model
335 hp
Average
87.8 hp
Low
5.5 hp
High
640 hp
Operating weight comparison
This model
46,680 lb
Average
9,181 lb
Low
320 lb
High
56,320 lb
John Deere 9R 640 Extra Horsepower Notes
Horsepower note
The John Deere 9R 640 is rated at 631.6 hp engine power and 335 hp at the PTO, a drop of about 296.6 hp between the engine and PTO.
PTO note
With 335 hp at the PTO, the John Deere 9R 640 is best matched to large PTO-driven equipment where the implement horsepower requirement matters more than the engine rating; large implements still need to be matched by PTO requirement, ballast, traction and transmission setup.
Drawbar note
For plows, ground tools and pull-type loads, the John Deere 9R 640’s 335 hp drawbar horsepower says more than engine horsepower alone.
Power-to-weight note
Using 46,680 lb operating weight and 631.6 hp engine power, the John Deere 9R 640 comes out at roughly 73.9 lb per engine horsepower, meaning it is light for its power, so traction and ballast can become the limiting factor before engine power.
Engine note
Engine details for the John Deere 9R 640 come together as 13.6 L displacement, rated at 2,100 rpm.
Torque / RPM note
The John Deere 9R 640’s 2,179 lb-ft torque rating works with its 2,100 rpm rated speed, so load response depends on both numbers.
Official information note
Mistakes do happen. Horsepower, PTO horsepower, drawbar horsepower, weight and engine specs can change by year, market, engine option, cab, transmission and test standard. Please check the operator manual and official deere.com website for official information.
