The ESAB SR-B 21 TIG Torch (4m, Water-Cooled, OKC50) is a compact, heavy-duty professional TIG welding torch engineered for maximum performance, precision, and durability. Designed for industrial welders, this torch offers exceptional power output, superior cooling efficiency, and unmatched control, making it ideal for demanding fabrication environments.
With its high current capacity (up to 340A DC) and 100% duty cycle water cooling, the SR-B 21 is built for continuous welding without overheating. The compact torch head and flexible ball joint design allow welders to access tight spaces with ease, ensuring precision welding in complex applications.
Perfect for industries such as pipeline, stainless steel fabrication, aerospace, and heavy engineering, this torch delivers consistent arc stability and long service life.
Key Features & Benefits
- High Power Output – Up to 340A DC / 240A AC @ 100% duty cycle
- Water-Cooled System – Ensures continuous operation without overheating
- Compact Torch Head – Ideal for tight access welding
- Precision Switch Technology – Improved control and ergonomics
- Ball Joint Cable Support – Smooth movement without cable twisting
- 4 Metre Cable Assembly – Balanced flexibility and control
- OKC50 Connector – Industry-standard compatibility
- Same Consumables as SR-B 20 – Easy replacement and availability
Technical Specifications
| Specification | Details |
|---|---|
| Brand | ESAB |
| Model | SR-B 21 |
| Part Number | 0700025544 |
| Cooling Type | Water-Cooled |
| Duty Cycle | 100% |
| Output | 340A DC / 240A AC |
| Cable Length | 4 metres |
| Connector | OKC 50 (2-pin amphenol) |
| Electrode Size | 0.5 – 3.2 mm |
| Torch Type | Heavy-Duty TIG Torch |
| Series | SR-B 21 |



