The New Holland TM155 tractor engine horsepower is 155 hp | 115.6 kW, PTO horsepower is 125 hp | 93.2 kW, and the drawbar horsepower is 108.5 hp | 80.9 kW.
Engine HP155 hp | 115.6 kW
PTO HP125 hp | 93.2 kW
Drawbar HP108.5 hp | 80.9 kW
PTO Transfer80.6%
Displacement456 ci | 7.5 L
New Holland TM155 Horsepower Specs
Engine horsepower
155 hp | 115.6 kW
PTO horsepower claimed
125 hp | 93.2 kW
PTO horsepower tested
133.8 hp | 99.8 kW
Drawbar horsepower tested
108.5 hp | 80.9 kW
New Holland TM155 Useful Horsepower Calculations
PTO-to-engine power transfer
80.6% of engine hp reaches the PTO
Drawbar-to-engine power transfer
70% of engine hp reaches the drawbar
Drawbar-to-PTO power ratio
86.8% drawbar hp vs PTO hp
Engine size per PTO horsepower
3.6 ci per PTO hp
PTO horsepower per liter
16.7 PTO hp per L
Engine size per engine horsepower
2.9 ci per engine hp
Engine horsepower per liter
20.7 engine hp per L
Fuel tank per PTO horsepower
0.6 gal per PTO hp
Rated speed per PTO horsepower
17.6 rpm per PTO hp
New Holland TM155 Engine Specs
Engine type
turbocharged diesel
Displacement
456 ci | 7.5 L
Bore and stroke
4.40×5.00 inches | 112 x 127 mm
Compression
17.0:1
Rated RPM
2200
Torque RPM
1400
New Holland TM155 Fuel, Cooling, Starting & Service Specs
Fuel capacity
75.3 gal | 285.0 L
Starter volts
12
Battery volts
12
Firing order
1-5-3-6-2-4
Idle RPM
800-2375
New Holland TM155 Horsepower Comparison Charts
Engine horsepower comparison
This model
155 hp
Average
210 hp
Low
120 hp
High
380 hp
PTO horsepower comparison
This model
125 hp
Average
175 hp
Low
100 hp
High
320 hp
Drawbar horsepower comparison
This model
108.5 hp
Average
150 hp
Low
85 hp
High
280 hp
Displacement comparison
This model
456 ci
Average
520 ci
Low
360 ci
High
750 ci
Rated RPM comparison
This model
2,200 rpm
Average
2,100 rpm
Low
1,600 rpm
High
2,500 rpm
Engine size per PTO HP
This model
3.6 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.
New Holland TM155 Horsepower FAQ
How much horsepower does the New Holland TM155 have?
The listed engine output is 155 hp, below the 210 hp benchmark average. That is a lower-power result, so the smarter match is lighter implements and jobs that do not demand more than about 155 hp.
How much PTO horsepower does the New Holland TM155 have?
The listed PTO output is 125 hp, below the 175 hp benchmark average. For real use, size PTO implements below or near 125 hp rather than using a bigger engine-horsepower number.
How much drawbar horsepower does the New Holland TM155 have?
The listed drawbar output is 108.5 hp, below the 150 hp benchmark average. For pulling work, the safer assumption is about 108.5 hp at the drawbar before soil, ballast and tire limits are considered.
How much engine power reaches the PTO on the New Holland TM155?
The PTO-to-engine transfer works out to 80.6%, from 155 engine hp to 125 PTO hp. That is a normal usable range for judging PTO implement fit.
How efficient is the New Holland TM155 for pulling work?
The drawbar-to-engine transfer is about 70%, from 155 engine hp to 108.5 drawbar hp. That gives a more grounded pulling estimate than engine horsepower alone.
Is the New Holland TM155 better judged by PTO hp or drawbar hp?
The drawbar output is about 86.8% of PTO output, comparing 108.5 drawbar hp with 125 PTO hp. That helps separate pulling ability from PTO implement ability.
How big is the New Holland TM155 engine?
The engine displacement is 456 ci, below the 520 ci benchmark average. Smaller displacement usually means less engine size behind each horsepower number.
Is the New Holland TM155 engine stressed for its PTO horsepower?
The engine has about 3.6 cubic inches per PTO hp, using 456 ci and 125 PTO hp. That is close to the normal benchmark for this category.
How much PTO horsepower per liter does the New Holland TM155 make?
The output density is about 16.7 PTO hp per liter, using 125 PTO hp and 7.5 L of displacement. Higher hp/L means more output squeezed from each liter; lower hp/L usually means a more relaxed engine tune.
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 newholland.com website before buying parts, sizing implements or making repair decisions.
