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Kubota B7100 Tractor

The Kubota B7100 compact utility tractor was manufactured from 1976 to 1985. The tractor was designed in 2 versions: B7100E (2WD) and B7100D (4WD). The Kubota B7100 tractor is equipped with a 46.5 cu.in (0.8L) Kubota D750 4-cycle vertical 3-cylinder water-cooled diesel engine.

The engine has a cylinder bore of 2.68" (68 mm), piston stroke of 2.76" (70 mm), maximum power of 16 hp (11.9 kW), and 50.1 Nm (37.2 lb-ft) of peak torque at 1800 rpm. The mechanical transmission consists of a dry clutch and unsynchronized gearbox with 6 forward and 2 reverse gears.

The maximum travel speed (forward and reverse): 8.3 mph (13.4 km/h) / 4.2 mph (6.7 km/h). The open center hydraulic system includes a gear pump with fluid flow rate of 3 gpm (11.4 lpm). The hydraulic system pressure is 117 bar (1700 psi). The Kubota B7100 is equipped with a ball screw type manual steering, independent brakes with dry drum, 4.00x9 (2WD) or 6.00x12 (4WD) front tires, and 7.00x16 (2WD) or 8.00x16 (4WD) rear tires. The wheelbase is 48.8" (1240 mm) for 2-wheel drive models and 49.2" (1250 mm) for 4-wheel drive models.

Engine Model Kubota D750
Engine Type 4-cycle vertical 3-cylinder water-cooled diesel
Number of Cylinders 3
Displacement, cu.in (L) 46.5 (0.8)
Engine Bore, in (mm) 2.68 (68.0)
Engine Stroke, in (mm) 2.76 (70.0)
Aspiration Naturally aspirated
Maximum Engine Power, hp (kW) 16.0 (11.9)
Rated Engine Power, hp (kW) 13.0 (9.7)
Rated Engine Speed, rpm 2800
Maximum Torque, Nm (lb-ft) 50.1 (37.2)
Torque Speed, rpm 1800
Compression Ratio 22:1
Firing Order 1-2-3
Fuel System Indirect injection
Lubricating System Forced Lubrication by Trochoid Pump
Cooling System Pressurized Radiator, Forced Circulation with Water Pump
Starting System Electric Starting
Fuel Tank Capacity, gal (L) 3.5 (13.0)
Oil Capacity, qts (L) 4.1 (3.9)
Coolant Capacity, qts (L) 5.0 (4.7)
Electrical System Rating, Volts 12

Power Take-Off
PTO Operational Type Transmission
PTO Horsepower, hp (kW) 13.5 (9.7)
Rear PTO Speed, rpm 540/750/1000
Rear PTO / Engine Speed, rpm 540/3000
Rear PTO / Engine Speed, rpm 750/3000
Rear PTO / Engine Speed, rpm 1000/3000
Front PTO Speed, rpm 540
Front PTO / Engine Speed, rpm 540/2800

Transmission Type Unsynchronized gear
Gearbox Type 6F/2R
Number of Forward Gears 6
Number of Reverse Gears 2
Clutch Type Dry plate
Oil Capacity, qts (L) 12.2 (11.5)
Maximum Forward Speed, mph (kph) 8.3 (13.4)
Maximum Reverse Speed, mph (kph) 4.2 (6.7)

Wheels and Tires
Drive Wheels 2WD/4WD
Steering Configuration Front Steer
Steering System Manual, ball screw type
Brakes Type Right and left independent with dry drum
Front Tires (2WD) 4.00x9
Rear Tires (2WD) 7.00x16
Front Tires (4WD) 6.00x12
Rear Tires (4WD) 8.00x16
Front Tread (2WD), in (mm) 27.2-30.5 (685-770)
Rear Tread (2WD), in (mm) 28.8-32.7 (725-825)
Front Tread (4WD), in (mm) 33.7-35.5 (850-895)
Rear Tread (4WD), in (mm) 28.8-33.6 (725-845)

Hydraulic System
Hydraulic System Type Open Center
Hydraulic Pump Type Gear
Implement Pump Flow, gpm (Lpm) 3.0 (11.4)
Hydraulic Pressure, Bar (psi) 117 (1700)
Hydraulic Fluid Capacity, gal (L) 3.6 (13.6)
3-Point Hitch Category 1
Standard Lift Capacity at pin, lb (kg) 880 (400)

Dimensions and Weight
Wheelbase (2WD), in (mm) 48.8 (1240)
Wheelbase (4WD), in (mm) 49.2 (1250)
Length, in (mm) 78.8 (2000)
Height, in (mm) 45.5 (1150)
Overall Width, in (mm) 40 (1015)
Ground Clearance, in (mm) 9.5 (240)
Weight (2WD), lb (kg) 1010 (460)
Weight (4WD), lb (kg) 1080 (490)



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