The Kubota M128X tractor engine horsepower found is 128 hp. PTO horsepower found is 113 hp.
Engine HP128 hp
PTO HP113 hp
Power / weight13.2 hp per 1,000 lb
Kubota M128X Horsepower Specs
Engine horsepower
128 hp
PTO horsepower
113 hp
Rated engine RPM
2,200 rpm
Engine torque
392.4 lb-ft (532 Nm)
Engine displacement
372.2 cu in (6.1 L)
Engine cylinders
4 cylinders
Engine
6.1L
Operating weight
9,722 lb (4,410 kg)
PTO-to-engine ratio
88.3% of engine horsepower
Power-to-weight
13.2 hp per 1,000 lb
Horsepower class
large utility tractor horsepower
Horsepower Benchmarks
Engine horsepower benchmark
This model
128 hp
Average
85 hp
Low
45 hp
High
150 hp
PTO horsepower benchmark
This model
113 hp
Average
70 hp
Low
38 hp
High
125 hp
Operating weight benchmark
This model
9,722 lb
Average
8,000 lb
Low
4,500 lb
High
15,000 lb
Power-to-weight benchmark
This model
13.2 hp/1k lb
Average
11 hp/1k lb
Low
7 hp/1k lb
High
18 hp/1k lb
Benchmarks are general reference ranges for utility tractors.
Kubota M128X Horsepower FAQ
Engine horsepower
The Kubota M128X tractor engine horsepower found is 128 hp. Use engine horsepower for comparing engine output, not necessarily implement power at the PTO.
PTO horsepower
The PTO horsepower found for the Kubota M128X is 113 hp. PTO horsepower is the more useful figure when sizing PTO-driven implements.
Horsepower class
The Kubota M128X is listed as large utility tractor horsepower based on the engine horsepower found.
Rated engine RPM
The rated engine speed found for the Kubota M128X is 2,200 rpm. This is the engine speed used for the listed power rating.
Engine torque
The engine torque found for the Kubota M128X is 392.4 lb-ft (532 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 M128X include 6.1L, 372.2 cu in (6.1 L) displacement, and 4 cylinders.
Operating weight
The operating weight found for the Kubota M128X is 9,722 lb (4,410 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 M128X is 88.3% of engine horsepower based on the figures found.
Power-to-weight
The calculated power-to-weight figure for the Kubota M128X is 13.2 hp per 1,000 lb based on the engine horsepower and operating weight found.
Horsepower planning note
For the Kubota M128X, use 128 hp as the engine comparison number and 113 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.
