Kubota L2550

Last Updated: July 2024

Overview

The Kubota L2550, produced by Kubota from 1985 to 1991, is a compact utility tractor available in either 2WD (model L2550F) or 4WD (model L2550DT) configurations. It is equipped with a 1.4 L three-cylinder Kubota D1402-DI-A diesel engine, capable of outputting 29.44 hp at 2700 rpm and a maximum torque of 69.5 lb-ft (94.24 Nm) at 1600 rpm. Depending on the model, it offers a mechanical shuttle transmission with 8 forward and 8 reverse gears, a partially synchronized transmission with 8 forward and 8 reverse gears, or a power shift GST transmission featuring 8 forward and reverse gears with a wet disc clutch. The tractor boasts a Category I three-point hitch with a lift capacity of 2430 lbs, manual or optional power steering, and differential wet disc brakes. The open operator station includes a two-post ROPS, and the fuel tank has a capacity of 7.7 US gallons. The hydraulic system features an open center design with a pump delivery rate of 6.7 GPM (25.38 l/min). At the standard 540 rpm PTO speed, the tractor has a fuel efficiency of 14.5 Hp.hr/gal (2.86 kW.h/l) and a fuel consumption of 1.93 Gal/hr (7.31 l/h).

Key Specifications

Category: Utility

Power Output: 29.44

Transmission: Mechanical shuttle, partially synchronized, power shift with wet disc clutch (GST)

Drive Type: 2WD or 4WD

Operating Weight: 2250 to 2575

Fuel Type: Diesel

Kubota L2550 vs. Similar Tractors

Power Output

Below Average

Greater than 23% of similar tractors.

Hitch Capacity

Average

Greater than 41% of similar tractors.

Operating Weight

Above Average

Greater than 82% of similar tractors.

Technical Specifications

Engine

Manufacturer: Kubota
Model: D1402-DI-A
Cooling Type: Liquid-cooled
Cylinder Orientation: Inline
Valve Configuration: -
Fuel Type: Diesel
Induction Type: Naturally aspirated
Cylinders: 3
Displacement (ci): 85.1
Bore (in): 3.35
Stroke (in): 3.23
Rated RPM: 2700
Power Output (hp): 29.44

Transmission

Type: Mechanical shuttle, partially synchronized, power shift with wet disc clutch (GST)
Forward Gears: 8
Reverse Gears: 8
Total Gears: -

Dimensions

Length (in): 109.1
Width (in): 51.2
Height (in): 78.3
Operating Weight (lb): 2250 to 2575

Power Take-Off (PTO)

PTO Type: Continuous or live (optional), Optional Transmission
PTO Speed 1 (rpm): 540
PTO Speed 2 (rpm): 1000
PTO Speed 3 (rpm): -

Miscellaneous

Chassis: 4x2 2WD or 4x4 MFWD 4WD
Drive Type: 2WD or 4WD
Steering Type: Manual or power (option)
Coolant Capacity (qts): 5.3
Front Tire Diameter (in): Unknown (size provided)
Front Tire Width (in): Unknown (size provided)
Rear Tire Diameter (in): Unknown (size provided)
Rear Tire Width (in): Unknown (size provided)
Front/Rear Rim Diameter (in): -
Tire Type: Agricultural
Manufacture - End Year: 1991
Hitch Type: Three-Point Hitch
Hitch Category: Category I
Hitch Position: Rear
Hitch Capacity (lb): 2430 lbs
Operator Station Type: Open operator station with two-post ROPS
Starter Type: Electric
Brake Type: Differential wet disc
Hydraulic System Type: Open center

Test Results

Nebraska Tractor Test Laboratory - Test Date: November 13, 1985

Maximum Power and Fuel Consumption

Maximum Power: 29.44 HP (21.95 kW) at 2700 rpm
Fuel Consumption at Maximum Power: 2.05 Gal/hr (7.76 l/h) with a fuel efficiency of 0.487 lb/hp.hr (0.296 kg/kW.h)

Drawbar Performance

Power at Rated Engine Speed: 22.85 HP (17.04 kW) with a drawbar pull of 1809 lbs (8.05 kN) and a speed of 5.26 mph (8.47 km/h)
Fuel Consumption at Rated Speed: 2.368 lb/hp.hr (0.704 kg/kW.h) with a fuel efficiency of 13.66 Hp.hr/gal (2.69 kW.h/l)

Torque and Engine Performance

Maximum Torque: 69.5 lb.-ft. (94.24 Nm) at 1600 rpm
Torque Rise: Not specified

Hydraulic Performance

Hydraulic Power: Not specified
Pump Delivery Rate: 6.7 GPM (25.38 l/min)

Overall Efficiency

Fuel Efficiency at Standard PTO Speed (540 rpm): 14.5 Hp.hr/gal (2.86 kW.h/l)
Fuel Consumption: 1.93 Gal/hr (7.31 l/h) at 540 rpm

Nebraska Tractor Test Lab.(1985).Test 1586: Kubota L2550 2WD and 4WD Diesel 8-Speed. Lincoln, NE:Nebraska Tractor Test Laboratory. Retrieved from https://digitalcommons.unl.edu/tractormuseumlit/1897