The ST 2500 U/D is a liquid-cooled TIG torch, 4 m long, with U/D buttons for changing the current from the handle. At 100% duty cycle it carries 225 A DC and 160 A AC, and the price list gives an electrode range of 0.5 to 4.0 mm. It uses small series 9/20 consumables.
Who it is for
For welders who work long runs without stopping to let the torch cool. You need a cooling unit on the machine and CL10 coolant. When ordering spares remember the small series: collets, collet bodies and nozzles from an ST 3000 do not fit.
| Part number | 81.32.359 |
|---|---|
| Brand | Böhler Welding |
| Model | ST 2500 U/D |
| Version | U/D: up/down buttons for current control |
| Cooling | liquid |
| Length | 4 m |
| Electrode diameter | 0.5 to 4.0 mm |
| DC rating | 225 A at 100% duty cycle |
| AC rating | 160 A at 100% duty cycle |
| Consumables | small (9/20 series) |
| Pack quantity | 1 pc |
Fits
- TERRA NX 270 TLH (cooling unit WU 130 with pressure switch)
- URANOS NX 2200 AC/DC (cooling unit WU 1000)
- URANOS NX 2200 MTE (cooling unit WU 232)
- URANOS NX 2200 TLH (cooling unit WU 1000)
- URANOS NX 2700 MTE (cooling unit WU 232)
Also order
- Collets (3 pcs): 0.5 mm, 1.0 mm, 1.6 mm, 2.0 mm, 2.4 mm, 3.2 mm
- Collet bodies (3 pcs): 0.5 to 1.0 mm, 1.6 mm, 2.0 mm, 2.4 mm, 3.2 mm
- Ceramic nozzles (10 pcs): No. 4, No. 5, No. 6, No. 7, No. 8, No. 10
- Back caps (3 pcs): long and medium
- Cooling unit matching your machine (see Fits): WU 130 with pressure switch, WU 1000, WU 232
- CL10 coolant, 10 kg
FAQ
Do ST 3000 consumables fit the ST 2500 U/D?
No. The ST 2500 U/D uses small series 9/20 parts: collets from 0.5 to 3.2 mm, its own collet bodies, ceramic nozzles No. 4 to 10 and a long or medium back cap. Standard 17/18/26 parts have a separate compatibility list in the price list, without the ST 2500.
How does the ST 2500 U/D differ from the ST 3000 U/D?
The ST 3000 U/D 4 m carries 280 A DC and 220 A AC at 100%, uses standard 17/18/26 consumables and also fits the TERRA NX 320/400 TLH, URANOS NX 2700/3200 AC/DC and URANOS NX 3200 GSM. The ST 2500 U/D has a lower rating and small series consumables.
4 m or 8 m?
The 4 m length is enough at a bench or close to the machine, and the torch is easier to coil up. If you weld further from the power source, for example on a large structure, choose the ST 2500 U/D 8 m.
Spawlab is an authorised Böhler Welding distributor and service partner in Poland. VAT invoice, courier shipping from Krotoszyn, also to EU countries.

