The Case IH Farmall 50A tractor engine horsepower is 50 hp | 37.3 kW, and PTO horsepower is 46 hp | 34.3 kW.
Engine HP50 hp | 37.3 kW
PTO HP46 hp | 34.3 kW
PTO Transfer92%
Displacement135.9 ci | 2.2 L
Case IH Farmall 50A Horsepower Specs
Engine gross horsepower
50 hp | 37.3 kW
PTO horsepower claimed
46 hp | 34.3 kW
PTO horsepower tested
46.39 hp | 34.6 kW
Case IH Farmall 50A Useful Horsepower Calculations
PTO-to-engine power transfer
92% of engine hp reaches the PTO
Engine size per PTO horsepower
3 ci per PTO hp
PTO horsepower per liter
20.9 PTO hp per L
Engine size per engine horsepower
2.7 ci per engine hp
Engine horsepower per liter
22.7 engine hp per L
Rated speed per PTO horsepower
56.5 rpm per PTO hp
Case IH Farmall 50A Engine Specs
Engine type
turbocharged aftercooled diesel
Displacement
135.9 ci | 2.2 L
Bore and stroke
3.70×4.21 inches | 94 x 107 mm
Compression
17.5:1
Rated RPM
2600
Case IH Farmall 50A Fuel, Cooling, Starting & Service Specs
Starter volts
12
Battery volts
12
Case IH Farmall 50A Horsepower Comparison Charts
Engine horsepower comparison
This model
50 hp
Average
35 hp
Low
15 hp
High
60 hp
PTO horsepower comparison
This model
46 hp
Average
28 hp
Low
12 hp
High
50 hp
Displacement comparison
This model
135.9 ci
Average
110 ci
Low
50 ci
High
180 ci
Rated RPM comparison
This model
2,600 rpm
Average
2,400 rpm
Low
1,800 rpm
High
3,000 rpm
Engine size per PTO HP
This model
3 ci/hp
Average
3.1 ci/hp
Low
1.8 ci/hp
High
5 ci/hp
Benchmarks use practical low, average and high ranges for the compact and small utility tractor category. Use the operator manual and actual engine/tractor configuration before sizing implements or judging working power.
Case IH Farmall 50A Horsepower FAQ
How much horsepower does the Case IH Farmall 50A have?
The listed engine output is 50 hp, above the 35 hp benchmark average. That is a higher-power result, so ballast, tire setup and implement width matter if you want to use the full 50 hp.
How much PTO horsepower does the Case IH Farmall 50A have?
The listed PTO output is 46 hp, above the 28 hp benchmark average. That is the number to use for mowers, balers, augers, pumps and other PTO tools that need up to about 46 hp.
How much engine power reaches the PTO on the Case IH Farmall 50A?
The PTO-to-engine transfer works out to 92%, from 50 engine hp to 46 PTO hp. That is a strong transfer figure when the two specs are from the same configuration.
How big is the Case IH Farmall 50A engine?
The engine displacement is 135.9 ci, above the 110 ci benchmark average. Bigger displacement can help low-rpm pull and load-holding feel.
Is the Case IH Farmall 50A engine stressed for its PTO horsepower?
The engine has about 3 cubic inches per PTO hp, using 135.9 ci and 46 PTO hp. That is close to the normal benchmark for this category.
How much PTO horsepower per liter does the Case IH Farmall 50A make?
The output density is about 20.9 PTO hp per liter, using 46 PTO hp and 2.2 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 Farmall 50A rated at?
The rated speed is 2,600 rpm, close to the 2,400 rpm benchmark average. The 2,600 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.
