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Home / Farm Tractors / Kubota Tractors / Kubota B6100

Kubota B6100 Tractor

The Kubota B6100 sub compact tractor was manufactured from 1978 to 1997. This model was designed in 4 versions: B6100E (2WD Gear), B6100D (4WD Gear), B6100HST-E (2WD Hydrostatic), and B6100HST-D (4WD Hydrostatic). The Kubota B6100 tractor is powered by 41.2 cubic inches (675 cc) Kubota D650-A 4-cycle vertical three-cylinder liquid-cooled diesel engine.

The engine has a cylinder bore of 2.52" (64 mm), piston stroke of 2.76" (70 mm), rated power of 14.3 hp (10.6 kW), and 36.5 Nm (27.1 lb-ft) of max torque at 1800 rpm. The Kubota B6100 is fitted with two transmission options: mechanical transmission with 6 forward and 2 reverse gears, or 2-range hydrostatic transmission with infinite forward and reverse gears. The maximum travel speed (forward and reverse): 9.1 mph (14.5 km/h) / 6.2 mph (10.1 km/h).

The Kubota B6100 is equipped with a manual steering system, mechanical shoe (Gear) or internal expanding (HST) brakes, 4.00x9 (2WD) or 6.00x12 (4WD) front tires, and 7.00x16 (2WD) or 8.00x16 (4WD) rear tires. The gear models have a wheelbase of 48.9" (1240 mm) with 2WD or 49.1" (1245 mm) with 4WD. The HST models have a wheelbase of 54.7" (1380 mm) with 2WD or 55.1" (1390 mm) with 4WD.

Engine
Engine Model Kubota D650-A
Engine Type 4-cycle vertical three-cylinder liquid-cooled diesel
Number of Cylinders 3
Displacement, cu.in (L) 41.2 (0.675)
Engine Bore, in (mm) 2.52 (64.0)
Engine Stroke, in (mm) 2.76 (70.0)
Aspiration Naturally aspirated
Rated Engine Power, hp (kW) 14.3 (10.6)
Rated Engine Speed, rpm 2800
Maximum Torque, Nm (lb-ft) 36.5 (27.1)
Torque Speed, rpm 1800
Idle Speed, rpm 800
Compression Ratio 22:1
Firing Order 1-2-3
Fuel System Injection pump
Lubrication System Forced lubrication by pump
Cooling System Forced circulation with water pump
Fuel Tank Capacity, gal (L) 3.4 (13.0)
Oil Capacity, qts (L) 4.1 (3.9)
Coolant Capacity, qts (L) 4.9 (4.6)
Electrical System Rating, Volts 12

Power Take-Off
PTO Operational Type Transmission
PTO Horsepower, hp (kW) 12.0 (8.9)
PTO Speed (Gear), rpm 514/876/1500
PTO / Engine Speed, rpm 514/2800
PTO / Engine Speed, rpm 876/2800
PTO / Engine Speed, rpm 1500/2800
PTO Speed (HST), rpm 540/850
PTO / Engine Speed, rpm 540/2800
PTO / Engine Speed, rpm 850/2800

Standard Transmission
Transmission Type Unsynchronized gear
Gearbox Type 6F/2R, gear shift
Number of Forward Gears 6
Number of Reverse Gears 2
Clutch Type Dry single plate
Oil Capacity, qts (L) 12.2 (11.5)
Maximum Forward Speed, mph (kph) 8.6 (13.8)
Maximum Reverse Speed, mph (kph) 4.3 (6.9)

Optional Transmission
Transmission Type Hydrostatic (HST), high-low gear shift
Number of Forward Gears Infinite (2-range)
Number of Reverse Gears Infinite (2-range)
Clutch Type Dry single plate
Oil Capacity, qts (L) 14.2 (13.4)
Maximum Forward Speed (Low), mph (kph) 3.5 (5.6)
Maximum Forward Speed (High), mph (kph) 9.1 (14.5)
Maximum Reverse Speed (Low), mph (kph) 2.4 (3.9)
Maximum Reverse Speed (High), mph (kph) 6.2 (10.1)


Wheels and Tires
Drive Wheels 2WD/4WD
Steering Configuration Front steer
Steering System Manual, ball screw type
Brake Type (Gear) Differential mechanical shoe
Brake Type (HST) Mechanical internal-expanding
Front Tire Size (2WD) 4.00x9
Rear Tire Size (2WD) 7.00x16
Front Tire Size (4WD) 6.00x12
Rear Tire Size (4WD) 8.00x16
Front Tire Size (Turf) 20x8.00-10
Rear Tire Size (Turf) 27x8.50-15
Front Tread (2WD), in (mm) 27.4 (690)
Front Tread (4WD), in (mm) 30.9 (780)
Front Tread (2WD HST), in (mm) 30.3 (760)
Front Tread (4WD HST), in (mm) 28.8 (720)
Rear Tread (2WD), in (mm) 25.6-27.5 (650-700)
Rear Tread (4WD), in (mm) 25.2-29.1 (640-740)

Dimensions and Weight
Wheelbase (2WD), in (mm) 48.9 (1240)
Wheelbase (4WD), in (mm) 49.1 (1245)
Wheelbase (2WD HST), in (mm) 54.7 (1380)
Wheelbase (4WD HST), in (mm) 55.1 (1390)
Length, in (mm) 76.6 (1940)
Length (HST), in (mm) 83.8 (2120)
Height (2WD), in (mm) 44.9 (1140)
Height (4WD), in (mm) 44.6 (1130)
Height (HST), in (mm) 46.9 (1190)
Overall Width (2WD), in (mm) 36.6 (920)
Overall Width (4WD), in (mm) 38.4 (970)
Overall Width (HST), in (mm) 38.6 (980)
Ground Clearance (2WD), in (mm) 9.8 (240)
Ground Clearance (4WD), in (mm) 9.5 (235)
Ground Clearance (4WD HST), in (mm) 9.4 (230)
Weight (2WD), lb (kg) 970 (440)
Weight (4WD), lb (kg) 1036 (470)
Weight (2WD HST), lb (kg) 1151 (520)
Weight (4WD HST), lb (kg) 1265 (575)

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