Kubota industrial tractors
Kubota B21
The Kubota B21 is a backhoe loader tractor produced from 2001 to 2007. It features a Kubota E-TVCS 1.0L 3-cylinder liquid-cooled diesel engine delivering 21 hp gross and 19 hp net. The tractor uses a hydrostatic transmission with infinite forward and reverse speeds across 3 ranges. It has four-wheel drive, mechanical rear differential lock, power steering, wet disc brakes, and a four-post ROPS/FOPS for operator safety. The fuel capacity is 6.3 gallons, and the hydraulic system holds 7.3 gallons with an open center type. The rear PTO is live and runs at 540 rpm. Dimensions include a 60.4 inch wheelbase, 3988 lbs weight with loader, backhoe, and ROPS, and industrial tires sized 23x8.50-14 front and 12.4-16 rear. The backhoe attachment (Kubota BT751) offers a digging depth of 91.7 inches and a bucket width of 16 inches. The front loader (TL421) has a lift capacity of 926 lbs and a breakout force of 1543 lbs. Electrical system is 12 volts with negative ground.
Power-
Founded-
ModelB21
Technical Specifications
Detailed specifications and technical data for Kubota B21
Power
| Engine (net) | 19 hp (14.2 kW) |
|---|---|
| PTO (claimed) | 13.5 hp (10.1 kW) |
| Engine (gross) | 21 hp (15.7 kW) |
Engine
| Type | diesel |
|---|---|
| Model | Kubota E-TVCS |
| Cooling | liquid-cooled |
| Cylinders | 3-cylinder |
| Rated RPM | 2600 |
| Bore/Stroke | 3.00x2.90 inches (76 x 74 mm) |
| Power (net) | 19 hp (14.2 kW) |
| Displacement | 61 ci (1.0 L) |
| Oil capacity | 3.2 qts (3.0 L) |
| Power (gross) | 21 hp (15.7 kW) |
| Starter volts | 12 |
| Coolant capacity | 3.6 qts (3.4 L) |
Capacity
| Fuel | 6.3 gal (23.8 L) |
|---|---|
| Hydraulic system | 7.3 gal (27.6 L) |
Electrical
| Ground | negative |
|---|---|
| Battery volts | 12 |
Hydraulics
| Type | open center |
|---|---|
| Capacity | 7.3 gal (27.6 L) |
| Pump flow | 7.1 gpm (26.9 lpm) |
| Total flow | 8.5 gpm (32.2 lpm) |
| Steering flow | 1.3 gpm (4.9 lpm) |
Mechanical
| Drive | Four-wheel drive |
|---|---|
| Brakes | Wet disc brakes |
| ROPS/FOPS | Four-post ROPS/FOPS |
| Power steering | Yes |
| Differential lock | mechanical rear |
Production
| Type | Backhoe loader tractor |
|---|---|
| Manufacturer | Kubota |
| Years produced | 2001 - 2007 |
Attachments
| Backhoe | Kubota BT751 Backhoe |
|---|---|
| Backhoe weight | 892 lbs (404 kg) |
| Front-end loader | TL421 Loader |
| Backhoe swing arc | 180° |
| TL421 Loader weight | 650 lbs (294 kg) |
| Backhoe bucket force | 3110 lbs (1410 kg) |
| Backhoe bucket width | 16 inches (40 cm) |
| Backhoe digging depth | 91.7 inches (232 cm) |
| TL421 Loader rollback | 44° |
| Backhoe loading height | 81.7 inches (207 cm) |
| TL421 Loader dump time | 2.6s |
| Backhoe bucket rotation | 180° |
| TL421 Loader dump angle | 45° |
| TL421 Loader lower time | 1.8s |
| TL421 Loader raise time | 3.0s |
| Backhoe reach from pivot | 121.3 inches (308 cm) |
| Backhoe transport height | 79.3 inches (201 cm) |
| Backhoe dipperstick force | 1748 lbs (792 kg) |
| TL421 Loader bucket width | 56 inches (142 cm) |
| TL421 Loader rollback time | 2.6s |
| TL421 Loader reach (dumped) | 20.5 inches (52 cm) |
| TL421 Loader reach (ground) | 58.3 inches (148 cm) |
| TL421 Loader height (at pin) | 88.8 inches (225 cm) |
| TL421 Loader breakout (at pin) | 1543 lbs (699 kg) |
| TL421 Loader clearance (dumped) | 66.5 inches (168 cm) |
| TL421 Loader lift (full at pin) | 926 lbs (420 kg) |
| Backhoe 2-Foot flat digging depth | 90.5 inches (229 cm) |
| Backhoe 8-Foot flat digging depth | 68.4 inches (173 cm) |
Transmission
| Type | hydrostatic |
|---|---|
| Gears | infinite forward and reverse (3-range) |
| Oil capacity | 29.2 qts (27.6 L) |
Tractor hitch
| Control | position control |
|---|---|
| Rear Type | I |
| Rear lift (at 24"/610mm) | 1057 lbs (479 kg) |
Backhoe & Loader
| Dig depth | 91.7 inches (232 cm) |
|---|---|
| Dump angle | 45 inches (114 cm) |
Dimensions & Tires
| Weight | 3988 lbs (1808 kg) |
|---|---|
| Rear tire | 12.4-16 |
| Wheelbase | 60.4 inches (153 cm) |
| Front tire | 23x8.50-14 |
| Rear tread | 41.3 inches (104 cm) |
| Front tread | 37.8 inches (96 cm) |
| Height (backhoe) | 79.3 inches (201 cm) |
Power Take-off (PTO)
| Rear PTO | live |
|---|---|
| Rear PTO Type | 540 |