Kubota GB20
The Kubota GB20 is a tractor produced by Kubota. It is equipped with a 68.5 ci 1.1 L engine. The listed engine power is Diesel (listed): 19.7 hp / 14.7 kW. Transmission: Glideshift. Operating weight: 1543 to 1587 pounds.
Engine Power
Diesel (listed): 19.7 hp / 14.7 kW
Fuel & Capacities
5.3 gal
20.1 L
Transmission
Glideshift
Operating Weight
1543 to 1587 pounds
Overview
 | 1997 - 2001
GB SeriesSub-Compact Utility tractor
GB Series
Sub-Compact Utility tractor |
|---|
Production | |
|---|---|
Manufacturer | Kubota |
Sub-Compact Utility tractor | |
Variants | |
|---|---|
GB20F | Glideshift |
Kubota GB20 Engine | |
|---|---|
Kubota 1.1L 3-cyl diesel | |
Fuel tank | 5.3 gal
20.1 L |
Engine details ...  | |
Kubota GB20 Power | |
|---|---|
Engine | 19.7 hp
14.7 kW |
Mechanical | |
|---|---|
Four-wheel drive | |
Power steering | |
Mechanical wet disc brakes | |
Two-post ROPS. |
Tractor hitch | |
|---|---|
Rear Type | 0 |
Control | position control |
Power Take-off (PTO) | |
|---|---|
Rear PTO Type | 451/769/1207 (1.375) |
Dimensions & Tires | |
|---|---|
Wheelbase | 53.2 inches
135 cm |
Weight | 1543 to 1587 pounds |
Front tire | 6.00-12 |
Rear tire | 8.3-22 |
Full dimensions and tires ...  | |
Electrical | |
|---|---|
Ground | electric |
Battery volts | 12 |
Engine
Engine Detail — 68.5 ci / 1.1 L Diesel
Manufacturer | Kubota D1105 |
Fuel Type | Diesel |
Configuration | 3-cylinder, liquid-cooled |
Displacement | 68.5 ci
1.1 L |
Bore/Stroke | 3.07x3.09 inches
78 x 78 mm |
Power | 19.7 hp
14.7 kW |
Rated RPM | 2600 |
Starter | negative |
Starter volts | 12 |
Transmission
Transmission options | |
|---|---|
6-speed gear | |
18-speed |
Transmission — 6 forward and 2 reverse gear
Type | gear |
Gears | 6 forward and 2 reverse |
Three gears, plus reverse, in two ranges. | |
 | |
Transmission — Glideshift
Transmission | Glideshift |
Gears | 18 forward and 9 reverse |
Six forward and three reverse gears in three ranges. | |
Dimensions
Kubota GB20 Tires | |
|---|---|
Standard tires (ag) | Front: 6.00-12. Rear: 8.3-22 |
Dimensions | |
|---|---|
Wheelbase | 53.2 inches
135 cm |
Length | 92.3 inches
234 cm |
Width | 41.1 inches
104 cm |
Height (ROPS) | 74 inches
187 cm |
Gear Weight | 1543 lbs
699 kg |
Glideshift Weight | 1587 lbs
719 kg |
Ground clearance | 13 inches
33 cm |
Front tread | 33.1 inches
84 cm |
Rear tread | 31.9/35.4 inches
81/89 cm |
Photos
Kubota GB20
Kubota GB20
Kubota GB20
Kubota GB20
Kubota GB20
Kubota GB20
Kubota GB20 operator station and controls.
Recommended Implements & Sizing Guide
Engineering recommendations for Kubota GB20 based on its 19.7 HP power envelope and ASAE agricultural standards.
| Implement & Operation | Recommended Size | Workload Rating | Engineering Notes |
|---|---|---|---|
Moldboard PlowPrimary Tillage | 1 to 2 Bottom (12")1 - 2 铧 (30 cm) | Light Duty | Ideal for garden plots and light sandy soil. |
Rotary Cutter / MowerMowing & Clearing | 4 ft (48 in)1.2 m | Light Duty | Pasture clipping and light brush under 1" diameter. |
Rotary TillerSeedbed Prep | 42 to 48 in105 - 120 cm | Light Duty | Covers compact tractor tire width. |
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 GB20.
Estimated Continuous Field Runtime: 5.2 hrs
Approximately 5.2 hours of continuous field operation at ~75% rated power on a full tank (5.3 gal / 20.1 L).
Estimated 75% Load Fuel Burn~1 gal/hr (3.9 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 GB20 Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for Kubota GB20.
Converted Equivalents:
Horsepower (HP)19.7 hp
Kilowatts (kW)14.7 kW
Metric Horsepower (PS / CV)20 PS
Direct Competitor Comparison
Compare Kubota GB20 against same-era industry alternatives in the same horsepower class.
Current Model
Kubota
Kubota GB20
Engine Power:Diesel (listed): 19.7 hp / 14.7 kW
★ Baseline Reference
International HarvesterMarket Competitor
International Harvester 8-16
Engine Power:17.8
Production Years:1917 - 1922
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