The Kubota STW37 tractor engine horsepower found is 36.6 hp. PTO horsepower found is 25.5 hp.
Engine HP36.6 hp
PTO HP25.5 hp
Power / weight13.1 hp per 1,000 lb
Kubota STW37 Horsepower Specs
Engine horsepower
36.6 hp
PTO horsepower
25.5 hp
Rated engine RPM
2,717 rpm
Engine torque
25.7 lb-ft (35 Nm)
Engine displacement
109.8 cu in (1.8 L)
Engine cylinders
3 cylinders
Engine
Kubota 1.8L
Operating weight
2,800 lb (1,270 kg)
PTO-to-engine ratio
69.7% of engine horsepower
Power-to-weight
13.1 hp per 1,000 lb
Horsepower class
mid-size compact tractor horsepower
Horsepower Benchmarks
Engine horsepower benchmark
This model
36.6 hp
Average
32 hp
Low
16 hp
High
60 hp
PTO horsepower benchmark
This model
25.5 hp
Average
25 hp
Low
12 hp
High
50 hp
Operating weight benchmark
This model
2,800 lb
Average
2,500 lb
Low
1,300 lb
High
4,500 lb
Power-to-weight benchmark
This model
13.1 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 STW37 Horsepower FAQ
Engine horsepower
The Kubota STW37 tractor engine horsepower found is 36.6 hp. Use engine horsepower for comparing engine output, not necessarily implement power at the PTO.
PTO horsepower
The PTO horsepower found for the Kubota STW37 is 25.5 hp. PTO horsepower is the more useful figure when sizing PTO-driven implements.
Horsepower class
The Kubota STW37 is listed as mid-size compact tractor horsepower based on the engine horsepower found.
Rated engine RPM
The rated engine speed found for the Kubota STW37 is 2,717 rpm. This is the engine speed used for the listed power rating.
Engine torque
The engine torque found for the Kubota STW37 is 25.7 lb-ft (35 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 STW37 include Kubota 1.8L, 109.8 cu in (1.8 L) displacement, and 3 cylinders.
Operating weight
The operating weight found for the Kubota STW37 is 2,800 lb (1,270 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 STW37 is 69.7% of engine horsepower based on the figures found.
Power-to-weight
The calculated power-to-weight figure for the Kubota STW37 is 13.1 hp per 1,000 lb based on the engine horsepower and operating weight found.
Horsepower planning note
The practical split on the Kubota STW37 is engine power at 36.6 hp and PTO power at 25.5 hp.
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.
