The Case IH Steiger 645 tractor engine horsepower is 636.2 hp | 474.4 kW, and PTO horsepower is 529.6 hp | 394.9 kW.
Engine HP636.2 hp | 474.4 kW
PTO HP529.6 hp | 394.9 kW
PTO Transfer83.2%
Displacement787 ci | 12.9 L
Case IH Steiger 645 Horsepower Specs
Engine gross horsepower
636.2 hp | 474.4 kW
PTO horsepower claimed
529.6 hp | 394.9 kW
Case IH Steiger 645 Useful Horsepower Calculations
PTO-to-engine power transfer
83.2% of engine hp reaches the PTO
Engine size per PTO horsepower
1.5 ci per PTO hp
PTO horsepower per liter
41.1 PTO hp per L
Engine size per engine horsepower
1.2 ci per engine hp
Engine horsepower per liter
49.3 engine hp per L
Rated speed per PTO horsepower
4 rpm per PTO hp
Case IH Steiger 645 Engine Specs
Engine type
turbocharged diesel
Displacement
787 ci | 12.9 L
Bore and stroke
5.31×5.91 inches | 135 x 150 mm
Rated RPM
2100
Case IH Steiger 645 Fuel, Cooling, Starting & Service Specs
Starter volts
12
Battery volts
12
Case IH Steiger 645 Horsepower Comparison Charts
Engine horsepower comparison
This model
636.2 hp
Average
210 hp
Low
120 hp
High
380 hp
PTO horsepower comparison
This model
529.6 hp
Average
175 hp
Low
100 hp
High
320 hp
Displacement comparison
This model
787 ci
Average
520 ci
Low
360 ci
High
750 ci
Rated RPM comparison
This model
2,100 rpm
Average
2,100 rpm
Low
1,600 rpm
High
2,500 rpm
Engine size per PTO HP
This model
1.5 ci/hp
Average
3.3 ci/hp
Low
2 ci/hp
High
5.2 ci/hp
Benchmarks use practical low, average and high ranges for the large ag tractor category. Use the operator manual and actual engine/tractor configuration before sizing implements or judging working power.
Case IH Steiger 645 Horsepower FAQ
How much horsepower does the Case IH Steiger 645 have?
The listed engine output is 636.2 hp, above the 210 hp benchmark average. That is a higher-power result, so ballast, tire setup and implement width matter if you want to use the full 636.2 hp.
How much PTO horsepower does the Case IH Steiger 645 have?
The listed PTO output is 529.6 hp, above the 175 hp benchmark average. That is the number to use for mowers, balers, augers, pumps and other PTO tools that need up to about 529.6 hp.
How much engine power reaches the PTO on the Case IH Steiger 645?
The PTO-to-engine transfer works out to 83.2%, from 636.2 engine hp to 529.6 PTO hp. That is a normal usable range for judging PTO implement fit.
How big is the Case IH Steiger 645 engine?
The engine displacement is 787 ci, above the 520 ci benchmark average. Bigger displacement can help low-rpm pull and load-holding feel.
Is the Case IH Steiger 645 engine stressed for its PTO horsepower?
The engine has about 1.5 cubic inches per PTO hp, using 787 ci and 529.6 PTO hp. That is a smaller-displacement, higher-output style result.
How much PTO horsepower per liter does the Case IH Steiger 645 make?
The output density is about 41 PTO hp per liter, using 529.6 PTO hp and 12.9 L of displacement. Higher hp/L means more output squeezed from each liter; lower hp/L usually means a more relaxed engine tune.
What rpm is the Case IH Steiger 645 rated at?
The rated speed is 2,100 rpm, close to the 2,100 rpm benchmark average. The 2,100 rpm figure is around normal for this class.
Official information note
Horsepower and engine specs can vary by year, market, engine option, fuel system, test standard and tractor configuration. Check the operator manual, spec plate, parts book and official caseih.com website before buying parts, sizing implements or making repair decisions.
