The Massey Ferguson 7720 tractor engine horsepower is 185 hp | 138.0 kW, PTO horsepower is 155 hp | 115.6 kW, and the drawbar horsepower is 138.9 hp | 103.6 kW.
Massey Ferguson 7720 Horsepower Specs
| Engine gross horsepower | 185 hp | 138.0 kW |
|---|---|
| PTO horsepower claimed | 155 hp | 115.6 kW |
| PTO horsepower tested | 198.7 hp | 148.2 kW |
| Drawbar horsepower tested | 138.9 hp | 103.6 kW |
Massey Ferguson 7720 Useful Horsepower Calculations
| PTO-to-engine power transfer | 83.8% of engine hp reaches the PTO |
|---|---|
| Drawbar-to-engine power transfer | 75.1% of engine hp reaches the drawbar |
| Drawbar-to-PTO power ratio | 89.6% drawbar hp vs PTO hp |
| Engine size per PTO horsepower | 2.6 ci per PTO hp |
| PTO horsepower per liter | 23.5 PTO hp per L |
| Engine size per engine horsepower | 2.2 ci per engine hp |
| Engine horsepower per liter | 28 engine hp per L |
| Fuel tank per PTO horsepower | 0.7 gal per PTO hp |
| Rated speed per PTO horsepower | 13.5 rpm per PTO hp |
Massey Ferguson 7720 Engine Specs
| Engine type | turbocharged diesel |
|---|---|
| Displacement | 402.5 ci | 6.6 L |
| Bore and stroke | 4.252×4.724 inches | 108 x 120 mm |
| Emissions | Tier 4 |
| Rated RPM | 2100 |
Massey Ferguson 7720 Fuel, Cooling, Starting & Service Specs
| Fuel capacity | 114 gal | 431.5 L |
|---|---|
| Starter volts | 12 |
| Battery volts | 12 |
Massey Ferguson 7720 Horsepower Comparison Charts
Engine horsepower comparison
PTO horsepower comparison
Drawbar horsepower comparison
Displacement comparison
Rated RPM comparison
Engine size per PTO 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.
Massey Ferguson 7720 Horsepower FAQ
How much horsepower does the Massey Ferguson 7720 have?
The listed engine output is 185 hp, close to the 210 hp benchmark average. That puts the tractor in a normal working range for this benchmark group, with 185 hp as the main engine number.
How much PTO horsepower does the Massey Ferguson 7720 have?
The listed PTO output is 155 hp, close to the 175 hp benchmark average. Use 155 PTO hp as the practical implement-sizing number.
How much drawbar horsepower does the Massey Ferguson 7720 have?
The listed drawbar output is 138.9 hp, close to the 150 hp benchmark average. It gives a realistic pulling-power figure of about 138.9 hp.
How much engine power reaches the PTO on the Massey Ferguson 7720?
The PTO-to-engine transfer works out to 83.8%, from 185 engine hp to 155 PTO hp. That is a normal usable range for judging PTO implement fit.
How efficient is the Massey Ferguson 7720 for pulling work?
The drawbar-to-engine transfer is about 75.1%, from 185 engine hp to 138.9 drawbar hp. That gives a more grounded pulling estimate than engine horsepower alone.
Is the Massey Ferguson 7720 better judged by PTO hp or drawbar hp?
The drawbar output is about 89.6% of PTO output, comparing 138.9 drawbar hp with 155 PTO hp. That helps separate pulling ability from PTO implement ability.
How big is the Massey Ferguson 7720 engine?
The engine displacement is 402.5 ci, below the 520 ci benchmark average. Smaller displacement usually means less engine size behind each horsepower number.
Is the Massey Ferguson 7720 engine stressed for its PTO horsepower?
The engine has about 2.6 cubic inches per PTO hp, using 402.5 ci and 155 PTO hp. That is a smaller-displacement, higher-output style result.
How much PTO horsepower per liter does the Massey Ferguson 7720 make?
The output density is about 23.5 PTO hp per liter, using 155 PTO hp and 6.6 L of displacement. Higher hp/L means more output squeezed from each liter; lower hp/L usually means a more relaxed engine tune.
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 masseyferguson.com website before buying parts, sizing implements or making repair decisions.
