Products Description
A water cooled spot welder is a resistance welding machine that uses a circulating water system to force-cool critical components including the transformer, electrode arms, and electrode caps. Compared to naturally-cooled welders, the water-cooling system effectively controls temperature rise, supporting higher power output and longer continuous operation - making it particularly suitable for high-intensity welding applications in automotive manufacturing, sheet metal fabrication, appliance production, and more.
Our water-cooled spot welders are available in portable, suspended, and stationary configurations, featuring independent circulating water cooling systems with flow rates of 4–12L/min. They ensure stable performance and consistent weld quality during extended production runs.

Key Selling Points

Forced Water Cooling - Sustained Operation
Independent water-circulation system channels coolant through the transformer, electrode arms, and caps to dissipate heat. Compared to naturally-cooled welders, water-cooled units support higher duty cycles (20%–50%) and prolonged continuous operation, ideal for high-volume production.
All-Copper Transformer - Efficient Heat Transfer
Featuring a full copper-wound transformer with excellent conductivity and minimal magnetic loss, combined with water cooling for stable high-current output. The DN2-63C model delivers up to 46KA short-circuit current, welding mild steel up to 5+5mm.
Multiple Configurations - Choose by Application
Suspended Water-Cooled Welder: Suspended on rails with 360° rotation, ideal for large workpieces
Portable Water-Cooled Welder: Handheld operation for on-site repairs and confined spaces
Stationary Water-Cooled Welder: Sturdy construction for production line welding
C-Type / X-Type Guns: C-Type for vertical surfaces (doors, cabinets); X-Type for horizontal surfaces (rails, profiles)


Intelligent Control - Precise Parameters
Microcomputer/PLC controllers support constant current, constant voltage, and multi-pulse modes with multiple weld schedule storage. High-end models feature 7-inch touchscreens with automatic parameter matching - select material type and thickness, and the machine automatically calculates optimal settings.
Closed-Loop Circulation - Water-Efficient
Self-circulating water systems reuse coolant via pump circulation without continuous discharge. Compared to traditional "straight-discharge" cooling, this saves significant water and improves the working environment.
Extended Electrode Life - Lower Costs
Water cooling reduces electrode operating temperatures, slowing wear and deformation. Electrode service life extends by over 30%, reducing replacement frequency and downtime.
Typical Applications
Automotive Manufacturing & Repair: Body panel welding, HSS spot welding, collision repair - water cooling supports extended operation
Sheet Metal Fabrication: Enclosures, electrical cabinets, stainless steel product assembly
Appliance Manufacturing: Washing machine drums, dishwasher liners, water heater housings
Steel Furniture: Office furniture, display racks, steel bed frames
Filter Equipment: Metal wire mesh, filter assembly

Water Cooling System Operation
The cooling system consists of three components: water tank, pump, and cooling lines in a closed-loop cycle:
Storage
Water tank holds coolant (typical capacity 20L)
Pressurization
Self-priming pump pressurizes and delivers coolant
Forced Cooling
Coolant flows through transformer, electrode arms, and caps - dissipating heat
Recirculation
Heated water returns to the tank, cools naturally, and recirculates
Compared to "straight-discharge" cooling, closed-loop systems save 3–4 tons of water per day while eliminating wastewater issues.
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