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Kubota Custom UG Industrial Open Generator 21kW
Kubota Custom UG Industrial Open Generator 21kW

The Custom made Kubota Model UGI-21 Series is a liquid cooled diesel generator with 21 kW 60 Hz, of continuous output, tier 4 and CARB compliant. These industrial generators are suitable for prime power, off the grid and standby use. When you require the dependability of an industrial grade generator the UGI Series is for you. Our custom built generators are available in several models from 7kW to 250kW available in single and three phase and priced competitively to deliver the performance and value found only on more expensive competitors models.

Standard equipment includes: 12 volt electric starter, 12 volt battery charging alternator, automatic engine shutdown for low oil pressure and high coolant temperature, fuel filter, electric fuel transfer pump, air silencer intake, air cleaner, heavy duty steel frame, high ambient radiator cooling, single bearing generator Mecc Alte altenator ends (best available) http://www.meccalte.com/ , brushless exciter, unit mounted solid state voltage regulator, industrial muffler shipped loose, Toggle switch start / Preheat / Hourmeter

United Generator’s custom built Kubota, Perkins and John Deere generators provide reliable power to meet the most demanding requirements. We use the same engines as the factory built models and the best Newage / Stamford and Mecc Alte alternators available. These generators are designed and built to withstand tough environments at construction sites, provide prime power for off the grid applications and dependable temporary clean power at entertainment venues and disaster recovery operations. By utilizing the latest state of the art voltage regulation and the highest quality solid state circuit boards our generators are safe to use with sensitive equipment like computers, cells phones and any where clean power is needed.  Our easy to maintain design offers quick access to all drain extensions and filters, which can be cross referenced at any auto store, making routine maintenance even easier. This unit includes every basic feature our customers ask for making it turn key ready for a commercial or residential back up or an off the grid primary power source.

You can upgrade this unit to a quiet residential muffler, mount it on a 60, 100, 150 or 200 gallon extended run time fuel tank, add an electric transfer fuel pump or install a digital controller that includes a free 2 wire auto start module. You may upgrade the enclosure to a regular or sound attenuated aluminum powder coated weather enclosure for longevity, rust resistance and super quiet operation.

This model features a premium Kubota model V2403 engine, 36.1 HP, 4 cylinder, diesel fueled, liquid cooled engine with electric start. This model runs at 1800 RPM and generates 21 kW (20 kVA) 60 Hz of clean stable continuous power at a primary voltage of 120/240 VAC, single phase, 60 Hertz. Available in 3 phase for an extra fee.

The price includes a factory warranty of 24 months
 Type - Rotating field single-phase AC generator
 Frequency Hz 60
 Standby Output kW 21
 Prime Output kW 21
 Voltage - Single Phase V 120/240
 Armature Connection - Series
 Phase Single -

Single Phase

we can make this a 3 phase model as well

 Power Factor - 1.0
 No. of Poles - 4
 Insulation Class Rotor coil; class H
 Type of Coupling - Direct coupled
 Single Phase 120V A 175.3
 Single Phase 240V A 87.5
 NO. OF RECEPTACLES = 0. Connections are made via hardwire to circuit breaker
 5-15R (GFCI) - -
 5-20RA (GFCI) - 0
 6-15R - -
 L5-30R - 0
 L6-30R - -
 CS-6369 - 0
 Terminal - NA
 Type - Vertical, liquid-cooled,
4-cycle diesel engine
 Model - V2403
 No. of Cylinders - 4
 Bore x Stroke (in.) (3.43 x 4.03)
 Displacement  (cu. in.)  (148)
 Engine Speed rpm 1800
 Continuous Rated Output kW  21 
 (API classification)
- Above CF grade
 Oil Capacity L (gals.) 7.6 (2.1)
 Coolant Capacity L (qts.) 7.8 (8.2)
 Starting System - Electric - 12 volt DC
 Fuel - Diesel fuel No.2
(ASTM D975)
at Full Load  (gal./h)  (1.72)
at 3/4 Load  (gal./h)  (1.31)
at 1/2 Load  (gal./h)  (.86)
at 1/4 Load  (gal./h)  (.43)
 Fuel Tank Capacity gal. 100
at Full Load h 57
at 3/4 Load h 76
at 1/2 Load h 116
at 1/4 Load h 232
 Battery (Ah/5h) not included -  (12V x 64Ah)

 Dimensions Genset only
 L x W x H

Dimensions on a fuel tank
 L x W x H


51 x 25 x 34

71 x 30 x 49

 Approx. Net Weight  (lbs.)  945 lbs.  skid mounted.(1557) with fuel tank and enclosure
 Sound Level
 (Full Load at 23 ft. [7m])
dB (A) N.A. 64 with optional sound enclosure.
 Emergency Stop System - In case of abnormal: oil pressure, water temperature, fan belt broken, when the side access cover or door is opened while running


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List Price: $18400.00
Price: $11270.00

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