Shibaura
Shibaura ST321
The Shibaura ST321 is a compact utility tractor built in Matsumoto, Japan by Shibaura. It features a 1.0L 3-cylinder liquid-cooled diesel engine producing 21 hp (15.7 kW) with a 9-speed gear or hydrostatic transmission option. The tractor includes four-wheel drive, mechanical rear differential lock, power steering, wet disc brakes, and a two-post folding ROPS. It has a fuel capacity of 5.3 gallons (20.1 L) and a hydraulic system capacity of 4.2 gallons (15.9 L) with an open center type hydraulic system. The PTO offers both gear and hydrostatic rear PTO options with a 540 RPM rear PTO and an optional mid PTO at 2000 RPM. Dimensions include a 55.3 inch (140 cm) wheelbase, length of 107.4 inches (272 cm), and weight ranging from 1649 to 1662 pounds depending on transmission type. Tires vary for agricultural and lawn/turf use. Electrical system is negative ground with a 40 amp alternator charging a 12 volt battery.
Power21 hp
Foundedunknown
ModelST321
Technical Specifications
Detailed specifications and technical data for Shibaura ST321
Power
| Engine | 21 hp (15.7 kW) |
|---|---|
| PTO (claimed) | 17 hp (12.7 kW) |
Tires
| Ag rear | 9.5-16 |
|---|---|
| Ag front | 6-12 |
| Lawn/turf rear | 29x12.00-15 |
| Lawn/turf front | 20x8.00-10 |
Engine
| Type | diesel |
|---|---|
| Model | Shiabaura S773 |
| Power | 21 hp (15.7 kW) |
| Cooling | liquid-cooled |
| Starter | electric |
| Cylinders | 3-cylinder |
| Rated RPM | 2600 |
| Bore/Stroke | 3.03x2.83 inches (77 x 72 mm) |
| Compression | 23:1 |
| Displacement | 61.3 ci (1.0 L) |
| Oil capacity | 3.5 qts (3.3 L) |
| Starter volts | 12 |
| Coolant capacity | 3.7 qts (3.5 L) |
Capacity
| Fuel | 5.3 gal (20.1 L) |
|---|---|
| Hydraulic system | 4.2 gal (15.9 L) |
Dimensions
| Length | 107.4 inches (272 cm) |
|---|---|
| Wheelbase | 55.3 inches (140 cm) |
| Gear Width | 44.8 inches (113 cm) |
| Rear tread | 35.3 to 37.7 inches (89 to 95 cm) |
| Front tread | 33.3 inches (84 cm) |
| Gear Weight | 1662 lbs (753 kg) |
| Hydro Width | 46.8 inches (118 cm) |
| Hydro Weight | 1649 lbs (747 kg) |
| Gear Height (ROPS) | 90 inches (228 cm) |
| Hydro Height (ROPS) | 88.2 inches (224 cm) |
| Gear Clearance (front axle) | 10.6 inches (26 cm) |
| Hydro Clearance (front axle) | 8.8 inches (22 cm) |
Electrical
| Ground | negative |
|---|---|
| Battery volts | 12 |
| Charging amps | 40 |
| Charging volts | 14 |
| Charging system | alternator |
Hydraulics
| Type | open center |
|---|---|
| Capacity | 4.2 gal (15.9 L) |
| Pressure | 1849 psi (127.5 bar) |
| Pump flow | 4.9 gpm (18.5 lpm) |
Mechanical
| ROPS | Two-post folding ROPS |
|---|---|
| Drive | Four-wheel drive |
| Brakes | Wet disc brakes |
| Power steering | yes |
| Differential lock | mechanical rear |
Production
| Type | Compact Utility tractor |
|---|---|
| Built in | Matsumoto, Japan |
| Manufacturer | Shibaura |
Transmission
| Gear Type | gear |
|---|---|
| Gear Gears | 9 forward and 3 reverse |
| Gear Clutch | dry disc |
| Hydrostatic Type | hydrostatic |
| Hydrostatic Gears | infinite forward and reverse (2-range) |
| Transmission options | 9-speed gear, hydrostatic |
Tractor hitch
| Rear Type | I |
|---|---|
| Rear lift | 1474 lbs (668 kg) |
Power Take-off (PTO)
| Mid PTO | optional |
|---|---|
| Mid PTO Type | 2000 |
| Gear Rear PTO | transmission |
| Rear PTO Type | 540 (1.375) |
| Hydro Rear PTO | live |
| Gear Engine RPM | 588@2600 |
| Hydro Engine RPM | 561@2600 |
| Gear Engine RPM (Mid PTO) | 2139@2600 |
| Hydro Engine RPM (Mid PTO) | 2040@2600 |