Kubota B7800
The Kubota B7800 is a tractor produced by Kubota. It is equipped with a 91.5 ci 1.5 L engine. The listed engine power is Diesel (gross): 30 hp / 22.4 kW. Transmission: infinite forward and reverse (3-range). Operating weight: 890 lbs 403 kg.
Engine Power
Diesel (gross): 30 hp / 22.4 kW
Fuel & Capacities
6.9 gal
26.1 L
Transmission
infinite forward and reverse (3-range)
Operating Weight
890 lbs
403 kg
Overview
 | 2003 - 2008
B SeriesCompact Utility tractor
B Series
Compact Utility tractor |
|---|
Production | |
|---|---|
Manufacturer | Kubota |
Compact Utility tractor | |
Variants | |
|---|---|
B2910 | deluxe |
B7800 | economy |
Kubota B7800 Engine | |
|---|---|
Kubota 1.5L 4-cyl diesel | |
Fuel tank | 6.9 gal
26.1 L |
Engine details ...  | |
Kubota B7800 Transmission | |
|---|---|
hydrostatic | |
Transmission details ...  |
Kubota B7800 Power | |
|---|---|
Engine (gross) | 30 hp
22.4 kW |
PTO (claimed) | 22 hp
16.4 kW |
Mechanical | |
|---|---|
Four-wheel drive | |
Final drives | spur gear |
Differential lock | mechanical rear |
Power steering | |
Wet disc brakes | |
Two-post fixed ROPS. Folding ROPS optional. | |
Hydraulics | |
|---|---|
Type | open center |
Pump flow | 6.4 gpm
24.2 lpm |
Total flow | 9.5 gpm
36.0 lpm |
Steering flow | 3.1 gpm
11.7 lpm |
Tractor hitch | |
|---|---|
Rear Type | I |
Control | quarter-inching valve |
Rear lift (at ends) | 1655 lbs
750 kg |
Rear lift (at 24"/610mm) | 1300 lbs
589 kg |
Power Take-off (PTO) | |
|---|---|
Rear PTO | live |
Rear PTO Type | 540 (1.375) |
Engine RPM | 540@2600 |
Mid PTO | live *Mid PTO standard with folding ROPS, optional with fixed ROPS. |
Mid PTO Type | 2500 (Kubota 10-spline) |
Engine RPM | 2500@2578 |
Dimensions & Tires | |
|---|---|
Wheelbase | 65.6 inches
166 cm |
Weight | 1741 lbs
789 kg |
Front tire | 7-12 |
Rear tire | 12.4-16 |
Full dimensions and tires ...  | |
Electrical | |
|---|---|
Ground | negative |
Battery CCA | 443 |
Battery volts | 12 |
References | |
|---|---|
 | |
B7400/B7500/B7800 B2410/B2710/B2910 published in 2003, by Kubota | |
B Series Standard, Deluxe and Premier Tractors published in 2004, by Kubota | |
B Series Standard and Premier Tractors published in 2007, by Kubota | |
B2710-B2910-B7800 (6C170-6311-3) published in 2003 |
Engine
Engine Detail — 91.5 ci / 1.5 L Diesel
Manufacturer | Kubota V1505-E-D16 |
Fuel Type | Diesel |
Configuration | 4-cylinder, liquid-cooled inline |
Displacement | 91.5 ci
1.5 L |
Bore/Stroke | 3.07x3.09 inches
78 x 78 mm |
Power (gross) | 30 hp
22.4 kW |
Air cleaner | dry |
Rated RPM | 2600 |
Starter volts | 12 |
Oil capacity | 4.3 qts
4.1 L |
Coolant capacity | 4.7 qts
4.4 L |
Transmission
Transmission — infinite forward and reverse (3-range) hydrostatic
Type | hydrostatic |
Gears | infinite forward and reverse (3-range) |
Oil capacity | 15.3 qts
14.5 L |
With 12.4-16 R1 rear tires. | |
 | |
Dimensions
Kubota B7800 Tires | |
|---|---|
Ag front | 7-12 |
Ag rear | 12.4-16 |
Lawn/turf front | 24x8.50-14 |
Lawn/turf rear | 13.6-16 |
Industrial front | 23x8.50-14 |
Industrial rear | 12.4-16 |
Dimensions | |
|---|---|
Wheelbase | 65.6 inches
166 cm |
Length | 99.2 inches
251 cm |
Width | 53.8 inches
136 cm |
Height (ROPS) | 78.5 inches
199 cm |
Weight | 1741 lbs
789 kg |
Ground clearance | 14.6 inches
37 cm |
Attachments
Attachment overview | |
|---|---|
60" mid-mount mower deck | |
72" mid-mount mower deck | |
Snowblower | |
Blade | |
Front-end loader | |
Backhoe |
Kubota B4672A Backhoe | |
|---|---|
Backhoe type | Kubota B4672A Backhoe |
Weight | 845 lbs
383 kg |
Transport height | 67.7 inches
171 cm |
Digging depth | 73.9 inches
187 cm |
Reach from pivot | 98.1 inches
249 cm |
Loading height | 65 inches
165 cm |
Bucket Rotation | 180° |
Swing Arc | 180° |
Bucket force | 2950 lbs
1338 kg |
Dipperstick force | 1740 lbs
789 kg |
Kubota BL4690A Backhoe | |
|---|---|
Backhoe type | Kubota BL4690A Backhoe |
Weight | 890 lbs
403 kg |
Transport height | 76 inches
193 cm |
Digging depth | 90.2 inches
229 cm |
Reach from pivot | 116.5 inches
295 cm |
Loading height | 78.9 inches
200 cm |
Bucket Rotation | 180° |
Swing Arc | 180° |
Bucket force | 2950 lbs
1338 kg |
Dipperstick force | 1740 lbs
789 kg |
Photos
Kubota B7800
Kubota B7800
Recommended Implements & Sizing Guide
Engineering recommendations for Kubota B7800 based on its 30 HP power envelope and ASAE agricultural standards.
| Implement & Operation | Recommended Size | Workload Rating | Engineering Notes |
|---|---|---|---|
Moldboard PlowPrimary Tillage | 2 to 3 Bottom (14-16")2 - 3 铧 (35-40 cm) | Medium Duty | Standard utility farm tillage. |
Rotary Cutter / MowerMowing & Clearing | 5 ft (60 in)1.5 m | Medium Duty | Pasture maintenance and weeds up to 1.5" diameter. |
Rotary TillerSeedbed Prep | 54 to 60 in135 - 150 cm | Medium Duty | Thorough seedbed preparation in orchards and vegetable plots. |
Disc HarrowSecondary Tillage | 5 to 6 ft (16-18" discs)1.5 - 1.8 m (40-45 cm 耙片) | Light Duty | Small acreage soil break-up and secondary aeration. |
Sizing & Soil Condition NoteActual implement sizing varies depending on local soil conditions (heavy clay vs sandy loam), field slope, and operating speed. Heavy tillage implements may require front ballast weights and wheel weights.
Fluids, Capacities & Working Autonomy
Standard fluid requirements, service intervals, and continuous runtime estimates for Kubota B7800.
Estimated Continuous Field Runtime: 4.4 hrs
Approximately 4.4 hours of continuous field operation at ~75% rated power on a full tank (6.9 gal / 26.1 L).
Estimated 75% Load Fuel Burn~1.6 gal/hr (5.9 L/hr)
Engine Crankcase Oil
SAE 15W-40 (Heavy Duty Diesel)
Standard Spec: API CK-4 / CJ-4 Heavy Duty
Service Interval: 150 – 250 Hours
Transmission & Hydraulic System
UTTO (Universal Tractor Transmission Oil)
Standard Spec: ISO VG 46 / 68 (Wet Brake & Trans Compatible)
Service Interval: 600 – 1000 Hours
Engine Cooling System
50/50 Ethylene Glycol Pre-mix
Standard Spec: ASTM D6210 / Heavy-Duty OAT Antifreeze
Service Interval: 2 Years / 1500 Hours
Kubota B7800 Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for Kubota B7800.
Converted Equivalents:
Horsepower (HP)30 hp
Kilowatts (kW)22.4 kW
Metric Horsepower (PS / CV)30.4 PS
Direct Competitor Comparison
Compare Kubota B7800 against same-era industry alternatives in the same horsepower class.
Current Model
Kubota
Kubota B7800
Engine Power:Diesel (gross): 30 hp / 22.4 kW
★ Baseline Reference
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