Engine welder Series HW310 Gasoline Twin Cylinder Power Generation Welder | Kohler Engine 310a Brushless Inducer Technology Field Heavy-Duty Welding English: engine welder Series HW310 Gasoline Twin-Cylinder Engine Welder | Kohler Engine 310a Brushless Inducer Tech Heavy-Duty Field Welding

Product Overview
ENGINE WELDER series HW310EW is a Beijing Engine Welder Technology Co., Ltd. It is equipped with Kohler CH20S Twin Cylinder Engine(624cc, 20HP), combined with brushless inducer power generation technology, providing up to 310a welding current. It is suitable for heavy operation scenarios such as rescue and maintenance of railways, municipal pipe networks, chemical plants, power plants and military equipment.

【Key Advantages】

  • Surge-powered engine equipped with US Kohler CH20S four-stroke twin-cylinder engine (624cc, 20HP) — powerful, smooth and quieter, suited to long heavy-duty shifts.

  • Brushless inducer power generation technology: High power generation efficiency, providing better welding power supply and reducing maintenance requirements.

  • Fast high/low current gear switching: Equipped with high and low current selector switches,No need to stop and plug and unplug fast plugs, that is, it can quickly adjust the current in the operation and improve the work efficiency.

  • Significant fuel savings and lower operating costs: Equipped with oil-saving solenoid valves, combined with high power generation efficiency, it saves energy significantly compared with the same type of equipment, and the long-term use and operation costs are more competitive.

  • Oil alarm protection: It saves energy and reduces the abrasion and abnormal start of the engine, ensures the safety of the engine and prolongs its life.

  • Excellent welding performance: Suitable for a variety of welding electrodes, excellent implementationCellulose electrode, low hydrogen electrode and argon arc weldingFull position welding. The arc is stable, the splash is small, and the hand feels delicate and smooth.

  • Auxiliary power outputStandard configuration3kW DC auxiliary power supply(DC220V) for on-site power for a variety of power tools.

  • Electric start + standard wheels: The 12V-32AH battery is used for electric starting, which is convenient to start; the wheels are standard configuration, which is convenient to move.

  • Rugged design: Protection class IP21, insulation class F, suitable for all kinds of harsh outdoor environment.

I Main technical parameters

Item Specs
Model HW310EW
form} Brushless
Way of Driving direct link
Protection class IP21
Insulation class F
Descending characteristics of electric welding machine
Rated power 8.7kW
Rated current 280A
Nominal voltage: 31.2V
No-load voltage 85V
Rated Utilization 50%
Current regulation range 60-310A
Auxiliary supply
Rated power 3.0kW
Nominal voltage: DC220V
Rated current 13.7A
Rated Utilization 100%
Engine
Name US Kohler CH20S
form} 4 stroke double cylinder
Engine displacement 624cc
Rated output power 20HP
Rated Speed (rpm) 3580rpm
Starting mode Electric start (12V-32AH battery)
Fuel Unleaded Gasoline
Cooling Air-cooled
Amount of lubricating oil 1.55L
Other
Fuel tank 20L
Dimensions 730×620×718mm
N.W. 165kg
BATTERY 12V-32AH
4. wheel Standard configuration

【Typical Applications】

  • Railway construction and rescue repairs

  • Municipal pipe network repair

  • Maintenance of chemical plants and power plants

  • Military equipment emergency repairs

  • Heavy field work

  • Engineering scenarios requiring high current welding

[Start-up and Operation Instructions]

  1. Pre-Start Check: Check the oil level (standard 1.55 L), fuel oil level (fuel tank capacity 20L), and check whether the battery connection is secure.

  2. Electric start: Insert the key, rotate it to the start position, and the engine will start.

  3. Weld Adjustment: Quickly adjust the welding current in the range of 60-310A through the high and low current selection switches without stopping or plugging and unplugging.

  4. Auxiliary power usage: Close the auxiliary power circuit breaker to use the DC220V/3kW DC output to power the power tool.

  5. Stopping the shear: Turn off the engine and wait until it is completely stopped for inspection and maintenance.

[Maintenance and Precautions]

  • Regularly check the oil level (1.55 L) and quality, and use lubricating oil that meets the specifications.

  • Kohler CH20S engines are regularly serviced, including oil replacement, filtration, air filtration, etc.

  • Regularly check the battery electrolyte level and terminals to ensure reliable start-up.

  • For long-term storage, disconnect the negative electrode of the battery and empty the fuel.

  • Use unleaded gasoline; poor-quality fuel damages the engine.

[Customization and Service]
This equipment is standard (including batteries, wheels), optional AC inverter and other accessories. For specific quotes, please call:86-010-86468776,Mobile/WeChat:13521628344。

English Full Description:

【Product Overview】
The ENGINE WELDER Series HW310EW is a high-power gasoline twin-cylinder engine welder provided by Beijing Engine Welder Technology Co., Ltd. Powered by the Kohler CH20S twin-cylinder engine (624cc, 20HP) combined with brushless inducer generation technology, delivering up to 310A welding current. Designed for heavy-duty repair and emergency operations in railway, municipal pipeline, chemical plant, power station, and military applications.

【Key Advantages】

  • Powerful Engine: Powered by the Kohler CH20S 4-stroke twin-cylinder engine (624cc, 20HP) – strong power output, smooth operation, low vibration, ideal for extended heavy-duty operation.

  • Brushless Inducer Generation Technology: High generation efficiency, superior welding power quality, reduced maintenance requirements.

  • Quick Current Switching: High/low current selector switch – adjust welding current on the fly without stopping the engine or unplugging cables.

  • Exceptional Fuel Efficiency: Equipped with fuel-saving solenoid valve combined with high generation efficiency – significantly lower operating costs compared to similar equipment.

  • Oil Alert Protection: Reduces engine wear, prevents abnormal starts, and extends engine life.

  • Superior Welding Performance: Compatible with cellulose, low-hydrogen, and TIG welding in all positions – stable arc, low spatter, smooth operation.

  • Auxiliary Power Output: Standard 3kW DC auxiliary power supply (DC220V) – powers various power tools on-site.

  • Electric Start + Standard Wheels: 12V-32AH battery electric start for convenience; wheels included as standard for easy mobility.

  • Rugged Design: IP21 protection rating and Class F insulation, built for harsh outdoor conditions.

【Key Specifications】

Parameter Specification
Model HW310EW
Type Brushless
Drive Method Direct Connection
Protection Rating IP21
Insulation Class F
Welder Drooping Characteristics
Rated Power 8.7kW
Rated Current 280A
Rated Voltage 31.2V
Open-Circuit Voltage 85V
Duty Cycle 50%
Current Range 60-310A
Auxiliary Power
Rated Power 3.0kW
Rated Voltage DC220V
Rated Current 13.7A
Duty Cycle 100%
Engine
Model Kohler CH20S (USA)
Type 4-Stroke Twin-Cylinder
Displacement 624cc
Rated Output 20HP
Rated Speed 3580rpm
Starting Method Electric Start (12V-32AH Battery)
Fuel Unleaded Gasoline
Cooling System Air-Cooled
Oil Capacity 1.55L
Other
Fuel Tank Capacity 20L
Dimensions 730×620×718mm
Net Weight 165kg
Battery 12V-32AH
Wheels Standard

【Applications】

  • Railway construction and emergency repair

  • Municipal pipeline maintenance

  • Chemical plant and power station equipment repair

  • Military equipment field repair

  • Heavy-duty off-grid construction

  • High-current welding applications

【Startup & Operation】

  1. Pre-start Check: Verify oil level (1.55L standard), fuel level (20L tank), and battery connections.

  2. Electric Start: Insert key and turn to start position.

  3. Welding Adjustment: Use high/low current selector switch to adjust from 60-310A without stopping the engine.

  4. Auxiliary Power: Close the auxiliary power circuit breaker to supply DC220V/3kW to power tools.

  5. Shutdown: Turn off the engine and perform inspection/maintenance after complete stop.

【Maintenance & Precautions】

  • Regularly check oil level (1.55L) and quality – use specified lubricants.

  • Follow Kohler CH20S maintenance schedule (oil, filter, air filter changes).

  • Regularly check battery electrolyte level and terminals.

  • Disconnect battery negative terminal and drain fuel for long-term storage.

  • Use unleaded gasoline only.

【Customization & Contact】
This unit comes standard with battery and wheels. Optional AC inverter and other accessories available. For pricing and configuration, please contact: 86-010-86468776 (Mobile/WeChat: 13521628344).

Full online purchase (cart & checkout) is available on the Chinese product page, or contact international@denohgroup.com for a quotation.