The Kubota GM56 tractor engine horsepower found is 55.1 hp. PTO horsepower found is 51.1 hp.
Engine HP55.1 hp
PTO HP51.1 hp
Power / weight10.9 hp per 1,000 lb
Kubota GM56 Horsepower Specs
Engine horsepower
55.1 hp
PTO horsepower
51.1 hp
Rated engine RPM
2,200 rpm
Engine torque
209.8 lb-ft (284 Nm)
Engine displacement
201.4 cu in (3.3 L)
Engine cylinders
4 cylinders
Engine
Kubota 3.3L
Operating weight
5,049 lb (2,290 kg)
PTO-to-engine ratio
92.7% of engine horsepower
Power-to-weight
10.9 hp per 1,000 lb
Horsepower class
large compact tractor horsepower
Horsepower Benchmarks
Engine horsepower benchmark
This model
55.1 hp
Average
32 hp
Low
16 hp
High
60 hp
PTO horsepower benchmark
This model
51.1 hp
Average
25 hp
Low
12 hp
High
50 hp
Operating weight benchmark
This model
5,049 lb
Average
2,500 lb
Low
1,300 lb
High
4,500 lb
Power-to-weight benchmark
This model
10.9 hp/1k lb
Average
14 hp/1k lb
Low
8 hp/1k lb
High
25 hp/1k lb
Benchmarks are general reference ranges for compact tractors.
Kubota GM56 Horsepower FAQ
Engine horsepower
The Kubota GM56 tractor engine horsepower found is 55.1 hp. Use engine horsepower for comparing engine output, not necessarily implement power at the PTO.
PTO horsepower
The PTO horsepower found for the Kubota GM56 is 51.1 hp. PTO horsepower is the more useful figure when sizing PTO-driven implements.
Horsepower class
The Kubota GM56 is listed as large compact tractor horsepower based on the engine horsepower found.
Rated engine RPM
The rated engine speed found for the Kubota GM56 is 2,200 rpm. This is the engine speed used for the listed power rating.
Engine torque
The engine torque found for the Kubota GM56 is 209.8 lb-ft (284 Nm). Torque helps describe low-speed pulling feel, while horsepower describes power output over engine speed.
Engine specs found
Engine specs found for the Kubota GM56 include Kubota 3.3L, 201.4 cu in (3.3 L) displacement, and 4 cylinders.
Operating weight
The operating weight found for the Kubota GM56 is 5,049 lb (2,290 kg). Weight matters because the same horsepower feels different in a light mower than in a heavy tractor.
PTO-to-engine horsepower ratio
The PTO-to-engine horsepower ratio for the Kubota GM56 is 92.7% of engine horsepower based on the figures found.
Power-to-weight
The calculated power-to-weight figure for the Kubota GM56 is 10.9 hp per 1,000 lb based on the engine horsepower and operating weight found.
Horsepower planning note
For the Kubota GM56, use 55.1 hp as the engine comparison number and 51.1 hp as the implement-power number.
Official information note
Mistakes do happen. Check the operator manual, service manual and official kubotausa.com website for official horsepower, PTO horsepower, engine RPM, torque and operating-weight specifications before buying implements or servicing the machine.
