Hanli 4-in-1 Handheld Welder
An integrated Hanli chiller with three wobble scan modes and optical-path protection.
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S&A CWFL Cooling Inside
S&A 4-in-1 Handheld Laser Welding Machine
Cooling is what separates a welder that lasts a shift from one that lasts a year. This build houses an S&A CWFL dual-circuit chiller inside the cabinet, holding the loop within about half a degree while you weld, clean, cut and finish seams from one 1080 nm platform, 1500W to 3000W.
1500–3000WLaser power
±0.5 °CTemperature stability
77 kgMachine weight
TwoCooling circuits
Key Numbers
Cooling You Can Measure
Thermal stability is the figure that separates a production welder from a handyman tool.
±0.5°CDual temperature control
3000WMaximum laser power
77kgCabinet weight
20mLongest fiber option
Overview
Four Functions Held Steady by One Chiller
Heat is the enemy of a stable bead. As the source warms, focus drifts and penetration changes. Here the chiller is matched to the source and optics from the start, so the machine settles quickly and then holds its recipe for hours.
- Integrated S&A CWFL chillerA proven industrial chiller built into the cabinet, sized for the laser it cools.
- Enclosed water tankA sealed reservoir keeps coolant clean and reduces how often the loop needs attention.
- Corrosion-resistant partsWetted components resist scale and corrosion, which extends the service interval.
- Alarm protectionFlow and temperature alarms trip before a fault can reach the source or the optics.
Signature Module
Inside the S&A Dual-Circuit Loop
Two circuits, two temperature set points, one cabinet. The diagram below explains what each loop protects.
01
Source Loop
Pulls heat from the fiber source and holds it at its own set point, which keeps output power stable as duty cycles rise.
02
Optics Loop
Cools the QBH connector and the optical path separately, because the optics prefer a different temperature to the source.
03
Control and Alarm
Dual temperature control holds about 0.5 degrees and raises a warning on abnormal flow or temperature.
| Cooling Parameter | Specification |
|---|---|
| Chiller family | S&A CWFL series, integrated in the cabinet |
| Circuit layout | Dual circuit, source and optics cooled separately |
| Temperature control | Dual control, within about ±0.5 °C |
| Reservoir | Enclosed tank with corrosion-resistant wetted parts |
| Recommended coolant | Deionised or distilled water, changed about every three months |
| Recommended water temperature | About 20 °C to 25 °C for most welding jobs |
| Alarms | Flow and temperature abnormality warnings |
Technical Data
KR-LW1500S, KR-LW2000S and KR-LW3000S Builds
One platform, three power levels. Every figure below is transcribed from the machine datasheet.
| Parameter | KR-LW1500S | KR-LW2000S | KR-LW3000S |
|---|---|---|---|
| Laser Source | Raycus / Reci / BWT / Max | ||
| Laser Power | 1500W | 2000W | 3000W |
| Power Adjustment Range | 0–1500W | 0–2000W | 0–3000W |
| Supply Voltage | 220V single phase | 220V single phase | 380V three phase |
| Laser Wavelength | 1080 nm | ||
| Fiber Length | 10 m / 12 m / 15 m, up to 20 m | ||
| Operation Mode | Continuous welding | ||
| Max Oscillation Speed | 20000 mm/s | ||
| Run System | Handheld welding system | ||
| Cooling System | S&A water-cooled, dual circuit | ||
| Ambient Temperature | 10–40 °C | ||
| Ambient Humidity | Below 70%, non-condensing | ||
| Weld Gap Requirement | 0.5 mm or less | ||
| Machine Dimensions | 860 × 410 × 700 mm | 1140 × 530 × 1040 mm | |
| Wire Feeder Dimensions | 570 × 250 × 400 mm | ||
| Machine Weight | 77 kg | ||
The datasheet lists the welding gun at 0.75 kg for the KR-LW1500S and KR-LW2000S but repeats the 109.2 kg figure for the KR-LW3000S, which matches the economy model machine weight rather than a gun. Treat the 0.75 kg figure as the gun weight and confirm the top model on your order. Water temperature, coolant and gun weight are confirmed before production.
Core Advantages
What Steady Cooling Buys You
Three practical gains that come from holding the loop at a fixed temperature.
Continuous Output
The machine can weld through a full shift without the output falling away as the source heats up.
Repeatable Bead
A stable temperature keeps bead width and penetration constant, so the hundredth part matches the first.
Longer Component Life
Cooler optics and a cooler source wear more slowly, which lowers maintenance and extends service intervals.
Operating Routine
Start the Loop, Then Start the Weld
Four steps keep the thermal system and the weld process in step.
01
Check the Coolant
Confirm the water level and that the loop is clean before switching on the source.
02
Run the Chiller
Let the chiller settle to its set point so the optics reach a stable temperature.
03
Set the Recipe
Choose power, wobble pattern and gas flow for the material, then test on a coupon.
04
Weld and Finish
Run the seam, then dress it with the cleaning head and inspect against the approved sample.
Applications
Built for Long, Repeatable Runs
Steady cooling matters most where the machine runs for hours without a break.
Automotive Production
Repeatable seams on brackets and panels where output must not drift across a long shift.
Stainless Fabrication
Tanks, sinks and railings welded and finished bright, with heat tint removed by the seam head.
Aerospace Components
Low-distortion, code-controlled beads on thin-walled assemblies that tolerate no heat drift.
Ordering & Support
Terms, Support and Shipping
Terms are agreed before production, and the chiller is covered by the same warranty as the machine.
Shipping
Air express by DHL, FedEx, TNT or UPS, plus air and sea freight. Trackable from the factory door.
Payment
T/T bank transfer, PayPal and Western Union. Terms and Incoterms are confirmed on the proforma invoice.
2-Year Warranty
Parts covered, including chiller components, with free replacement parts and lifetime support.
Packaging
Double-layer packing with a thick outer carton and foam cushions that stop movement in transit.
- Lead timeAbout five working days for a standard build, plus roughly four to six working days in transit by express.
- Volume termsAgreed per order against quantity and destination port.
- OEM & ODMHousing colour, nameplate and interface language can carry your brand.
- Free sample testSend a part and we return the welded sample, bead data and the parameter file we used.
FAQ
S&A Cooling and Welding Questions
The S&A chiller removes heat from the laser source and the optics so the machine can run for long periods without drifting. It replaces a generic cooling unit with a proven industrial chiller designed for laser duty.
A dual circuit cools the laser source and the optical path separately, because they tolerate different temperatures. Splitting the loops keeps each at its own set point, which protects the optics and holds the beam stable during continuous welding.
The dual temperature control holds fluctuations within about 0.5 degrees Celsius. That consistency is what keeps bead width and penetration repeatable from the first part to the last part of a shift.
Use deionised or distilled water so minerals do not build up and block the lines. As a rule, change the water about every three months, and more often in dusty or hot environments.
The integrated alarm system watches flow rate and temperature. An abnormal flow or temperature condition raises an alarm before it can damage the source or the optics, which protects both the machine and the operator.
Stainless steel, carbon steel, aluminium, copper and galvanised sheet are all supported. Aluminium and copper reflect more of the beam, so they are welded at the higher power levels with a slightly different focus and gas setting.
Standard production is about five working days, with express transit adding roughly four to six working days. The machine carries a 2-year warranty with free replacement parts and English online support for the life of the unit. Volume terms are agreed per order.
Related Models
Other Cooling and Cabinet Choices
The same four-in-one platform, built with different cooling and customisation priorities.
Split-Type 4-in-1 Laser Welder
Source and chiller in separate cabinets for extra cooling headroom and easier service access.
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Air-Cooled Handheld Welder
No chiller at all, 55 kg and ready for site work where water is impractical.
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