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Kubota B5100 Tractor
The
Kubota B5100 is a two-wheel drive or four-wheel drive sub-compact utility
tractor. This model was manufactured between 1978 and 1984. The tractor was
designed in 2 versions: B5100E (2WD) and B5100DT (4WD).
The Kubota B5100 is equipped with a 31 cu.in (0.5L) Kubota Z500-1A
4-cycle 2-cylinder liquid-cooled naturally aspirated diesel engine. The
engine has a cylinder bore of 2.63" (67 mm), piston stroke of 2.76" (70
mm), maximum power of 12 hp (8.9 kW), and 28.1 Nm (20.7 lb-ft) of max
torque at 1800 rpm.
The mechanical transmission consists of a dry clutch and unsynchronized
gearbox with six forward and two reverse gears. The maximum forward
speed - 8 mph (12.8 km/h), maximum reverse speed - 4 mph (6.4 km/h). The
Kubota B5100 was equipped with a ball screw type manual steering,
differential mechanical shoe brakes, 4.00x9 (2WD) or 4.50x10 (4WD) front
tires, and 7.00x16 rear tires. The wheelbase is 46.6 in (1180 mm).
| Engine Model |
Kubota Z500-1A |
| Engine Type |
4-cycle 2-cylinder liquid-cooled diesel |
| Number of Cylinders |
Two |
| Displacement, cu.in (L) |
31 (0.51) |
| Engine Bore, in (mm) |
2.63 (67.0) |
| Engine Stroke, in (mm) |
2.76 (70.0) |
| Aspiration |
Naturally aspirated |
| Rated Engine Power, hp (kW) |
12.0 (8.9) |
| Rated Engine Speed, rpm |
3000 |
| Maximum Torque, Nm (lb-ft) |
28.1 (20.7) |
| Torque Speed, rpm |
1800 |
| Idle Speed, rpm |
800 |
| Compression Ratio |
22:1 |
| Firing Order |
1-2 |
| Fuel System |
Injection pump |
| Fuel Injection Pump |
Bosch K type mini pump |
| Injection Nozzle |
Bosch throttle type |
| Lubrication System |
Forced lubrication by trochoidal pump |
| Cooling System |
Water with pressurized radiator |
| Fuel Tank Capacity, gal (L) |
2.1 (8.0) |
| Oil Capacity, qts (L) |
2.4 (2.3) |
| Coolant Capacity, qts (L) |
3.2 (3.0) |
| Electrical System Rating, Volts |
12 |
| PTO Operational Type |
Transmission |
| PTO Horsepower, hp (kW) |
10.0 (7.5) |
| Rear PTO Speed, rpm |
540/1000 |
| Front PTO Speed, rpm |
3000 |
| Transmission Type |
Unsynchronized gear |
| Gearbox Type |
6F/2R, gear shift |
| Number of Forward Gears |
6 |
| Number of Reverse Gears |
2 |
| Clutch Type |
Dry disc |
| Oil Capacity, qts (L) |
9.0 (8.5) |
| Maximum Forward Speed, mph (kph) |
8.0 (12.8) |
| Maximum Reverse Speed, mph (kph) |
4.0 (6.4) |
| Drive Wheels |
2WD/4WD |
| Steering Configuration |
Front steer |
| Steering System |
Manual, ball screw type |
| Brake Type |
Differential mechanical shoe |
| Front Tire Size (2WD) |
4.00x9 |
| Rear Tire Size (2WD) |
7.00x16 |
| Front Tire Size (4WD) |
4.50x10 |
| Rear Tire Size (4WD) |
7.00x16 |
| Front Tire Size (Turf) |
18x6.50-8 |
| Rear Tire Size (Turf) |
27x8.50-15 |
| Front Tread (2WD), in (mm) |
26.4 (670) |
| Front Tread (4WD), in (mm) |
26 (660) |
| Rear Tread, in (mm) |
25-29 (640-740) |
| Wheelbase, in (mm) |
46.6 (1180) |
| Length, in (mm) |
71.6 (1810) |
| Height, in (mm) |
44.1 (1120) |
| Overall Width, in (mm) |
36.3 (920) |
| Ground Clearance (2WD), in (mm) |
10.3 (260) |
| Ground Clearance (4WD), in (mm) |
8.6 (220) |
| Turning Radius (2WD), in (mm) |
65 (1650) |
| Turning Radius (4WD), in (mm) |
66 (1675) |
| Weight (2WD), lb (kg) |
805 (365) |
| Weight (4WD), lb (kg) |
893 (405) |
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| Farm Tractors Technical Specifications |
