The New Holland Workmaster 45 tractor engine horsepower is 45 hp | 33.6 kW, and PTO horsepower is 39 hp | 29.1 kW.
New Holland Workmaster 45 Horsepower Specs
| Engine gross horsepower | 45 hp | 33.6 kW |
|---|---|
| PTO horsepower claimed | 39 hp | 29.1 kW |
New Holland Workmaster 45 Useful Horsepower Calculations
| PTO-to-engine power transfer | 86.7% of engine hp reaches the PTO |
|---|---|
| Engine size per PTO horsepower | 3.5 ci per PTO hp |
| PTO horsepower per liter | 17.7 PTO hp per L |
| Engine size per engine horsepower | 3 ci per engine hp |
| Engine horsepower per liter | 20.5 engine hp per L |
| Rated speed per PTO horsepower | 69.2 rpm per PTO hp |
New Holland Workmaster 45 Engine Specs
| Displacement | 135 ci | 2.2 L |
|---|---|
| Bore and stroke | 3.307×3.937 inches | 84 x 100 mm |
| Rated RPM | 2700 |
New Holland Workmaster 45 Fuel, Cooling, Starting & Service Specs
| Starter volts | 12 |
|---|---|
| Battery volts | 12 |
New Holland Workmaster 45 Horsepower Comparison Charts
Engine horsepower comparison
PTO horsepower comparison
Displacement comparison
Rated RPM comparison
Engine size per PTO 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.
New Holland Workmaster 45 Horsepower FAQ
How much horsepower does the New Holland Workmaster 45 have?
The listed engine output is 45 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 45 hp.
How much PTO horsepower does the New Holland Workmaster 45 have?
The listed PTO output is 39 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 39 hp.
How much engine power reaches the PTO on the New Holland Workmaster 45?
The PTO-to-engine transfer works out to 86.7%, from 45 engine hp to 39 PTO hp. That is a normal usable range for judging PTO implement fit.
How big is the New Holland Workmaster 45 engine?
The engine displacement is 135 ci, above the 110 ci benchmark average. Bigger displacement can help low-rpm pull and load-holding feel.
Is the New Holland Workmaster 45 engine stressed for its PTO horsepower?
The engine has about 3.5 cubic inches per PTO hp, using 135 ci and 39 PTO hp. That is close to the normal benchmark for this category.
How much PTO horsepower per liter does the New Holland Workmaster 45 make?
The output density is about 17.7 PTO hp per liter, using 39 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 New Holland Workmaster 45 rated at?
The rated speed is 2,700 rpm, above the 2,400 rpm benchmark average. A higher 2,700 rpm rating can make power well but may feel busier under load.
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 newholland.com website before buying parts, sizing implements or making repair decisions.
