The Kubota B5100 tractor engine horsepower found is 12 hp. PTO horsepower found is 10 hp.
Engine HP12 hp
PTO HP10 hp
Power / weight13.4 hp per 1,000 lb
Kubota B5100 Horsepower Specs
Engine horsepower
12 hp
PTO horsepower
10 hp
Rated engine RPM
3,000 rpm
Engine torque
24 lb-ft (32 Nm)
Engine displacement
30.5 cu in (0.5 L)
Engine cylinders
2 cylinders
Operating weight
893 lb (405 kg)
PTO-to-engine ratio
83.3% of engine horsepower
Power-to-weight
13.4 hp per 1,000 lb
Horsepower class
subcompact / small compact tractor horsepower
Horsepower Benchmarks
Engine horsepower benchmark
This model
12 hp
Average
32 hp
Low
16 hp
High
60 hp
PTO horsepower benchmark
This model
10 hp
Average
25 hp
Low
12 hp
High
50 hp
Operating weight benchmark
This model
893 lb
Average
2,500 lb
Low
1,300 lb
High
4,500 lb
Power-to-weight benchmark
This model
13.4 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 B5100 Horsepower FAQ
Engine horsepower
The Kubota B5100 tractor engine horsepower found is 12 hp. Use engine horsepower for comparing engine output, not necessarily implement power at the PTO.
PTO horsepower
The PTO horsepower found for the Kubota B5100 is 10 hp. PTO horsepower is the more useful figure when sizing PTO-driven implements.
Horsepower class
The Kubota B5100 is listed as subcompact / small compact tractor horsepower based on the engine horsepower found.
Rated engine RPM
The rated engine speed found for the Kubota B5100 is 3,000 rpm. This is the engine speed used for the listed power rating.
Engine torque
The engine torque found for the Kubota B5100 is 24 lb-ft (32 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 B5100 include 30.5 cu in (0.5 L) displacement and 2 cylinders.
Operating weight
The operating weight found for the Kubota B5100 is 893 lb (405 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 B5100 is 83.3% of engine horsepower based on the figures found.
Power-to-weight
The calculated power-to-weight figure for the Kubota B5100 is 13.4 hp per 1,000 lb based on the engine horsepower and operating weight found.
Horsepower planning note
The practical split on the Kubota B5100 is engine power at 12 hp and PTO power at 10 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.
