The Kubota BX1870 tractor engine horsepower found is 18 hp. PTO horsepower found is 13.7 hp.
Engine HP18 hp
PTO HP13.7 hp
Power / weight13.4 hp per 1,000 lb
Kubota BX1870 Horsepower Specs
Engine horsepower
18 hp
PTO horsepower
13.7 hp
Rated engine RPM
3,200 rpm
Engine torque
38.5 lb-ft (52 Nm)
Engine displacement
55.2 cu in (0.91 L)
Engine cylinders
3 cylinders
Operating weight
1,345 lb (610 kg)
PTO-to-engine ratio
76.1% 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
18 hp
Average
32 hp
Low
16 hp
High
60 hp
PTO horsepower benchmark
This model
13.7 hp
Average
25 hp
Low
12 hp
High
50 hp
Operating weight benchmark
This model
1,345 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 BX1870 Horsepower FAQ
Engine horsepower
The Kubota BX1870 tractor engine horsepower found is 18 hp. Use engine horsepower for comparing engine output, not necessarily implement power at the PTO.
PTO horsepower
The PTO horsepower found for the Kubota BX1870 is 13.7 hp. PTO horsepower is the more useful figure when sizing PTO-driven implements.
Horsepower class
The Kubota BX1870 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 BX1870 is 3,200 rpm. This is the engine speed used for the listed power rating.
Engine torque
The engine torque found for the Kubota BX1870 is 38.5 lb-ft (52 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 BX1870 include 55.2 cu in (0.91 L) displacement and 3 cylinders.
Operating weight
The operating weight found for the Kubota BX1870 is 1,345 lb (610 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 BX1870 is 76.1% of engine horsepower based on the figures found.
Power-to-weight
The calculated power-to-weight figure for the Kubota BX1870 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 BX1870 is engine power at 18 hp and PTO power at 13.7 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.
