The Böhler Welding Guardian 50M Air is an auto-darkening welding helmet prepared for a PAPR powered air system, finished in matt blue. Its Guardian 50 ADF has light state shade 4, dark shade 9-13, a 50 x 100 mm viewing area and optical class 1/1/1/2 to EN 379. You buy the helmet only, without a unit: to work with it you need Guardian Air, Evolution Air or the Supplied Air regulator, or you choose the Guardian 50M Air Kit with Guardian Air.
Technical specifications
| Catalogue number | 86669 |
|---|---|
| Brand | Böhler Welding |
| Model | Guardian 50M Air |
| Type | Auto-darkening helmet prepared for air (without blower unit) |
| Colour | Matt blue |
| ADF | Guardian 50 (86693) |
| Shade levels (DIN) | 4 (light state), 9-13 |
| ADF viewing area | 50 x 100 mm |
| Optical class (EN 379) | 1/1/1/2 |
| Arc sensors | 4 |
| Grind mode | Yes, external control |
| ADF power supply | CR2450 |
| Operating temperature | -5 to +55 °C |
| Works with | Guardian Air, Evolution Air, Supplied Air |
| Pack quantity | 1 pc. |
| Standards | EN 175 B, EN 379, EN 166, EN 12941 (TH3), EN 14594 (4A) |
Who it is for
For welders who mostly work at shades 9-13 and want to breathe filtered air through the whole shift. The manual lists MIG/MAG, TIG with inverters, MMA, argon and helium shielded welding and AC/DC pulse welding. The belt-mounted unit pushes filtered air into the helmet, and the positive pressure under the shell keeps fumes out of the breathing zone.
Which blower unit it works with
- Böhler Welding Guardian Air PAPR blower unit, complete kit with filter: class TH3 to EN 12941, airflow 180 to 220 l/min in 6 levels, up to 8 h on the 5200 mAh battery, 870 g with filter and battery. This unit is the basis of Böhler Welding Guardian 50M Air Kit, welding helmet with Guardian Air PAPR.
- Böhler Welding Evolution Air PAPR blower unit, complete kit with filters: with this helmet class TH3 P R SL, with A1B1E1 gas filters class TH2 ABE1 P R SL; 180 to 240 l/min, up to 14 h on the 7800 mAh battery.
- Böhler Welding Supplied Air compressed air regulator for air-fed helmets, complete kit: compressed air supply at 3 to 8 bar, class 4A to EN 14594:2018, 180 to 220 l/min in 7 levels.
The Guardian 50M Air is on the lists of certified helmets in the Guardian Air, Evolution Air and Supplied Air manuals, so you can change the system without changing the helmet. Other units are listed in the Powered air systems category.
Which version to choose
The Böhler Welding Guardian 50 auto-darkening welding helmet has the same shade range 9-13 and 50 x 100 mm viewing area but no face seal or air duct connector: the extra cost of the Air version buys air readiness. The Böhler Welding Guardian 50M Air Kit, welding helmet with Guardian Air PAPR is this helmet with the Guardian Air unit (up to 8 h, 870 g) in a Böhler bag, a complete set ready for work.
What makes the Guardian 50M Air different
- Guardian 50 ADF: light state shade 4, dark shade 9-13, 4 arc sensors.
- Shade and grind mode are set from outside the shell, without taking the helmet off.
- 50 x 100 mm viewing area, True Blue Color technology, optical class 1/1/1/2 to EN 379.
- Sensitivity is set with a knob, and the ADF switches itself off after 15 minutes without use.
- An adjustable outlet directs part of the air to your forehead, the rest flows to the breathing zone.
- Face seal and air duct connector fitted at the factory.
- Headgear with top strap, longitudinal and angular adjustment, tightened with the rear knob.
- Matt blue shell and replaceable CR2450 battery in the ADF.
In the box
- Guardian 50M Air helmet with Guardian 50 ADF
- Face seal
- Air duct connector
- Headgear with sweatbands
The box contains no blower unit, filters, battery pack, hose or belt: you get them with Guardian Air or Evolution Air. Spawlab is an authorised Böhler Welding distributor in Poland: you buy with a VAT invoice and we ship by courier from Krotoszyn, also to the European Union.
Consumables and spare parts
- Böhler Welding front cover lens Guardian 50, 62, 62F, Laser Guard (10 pcs) or the heavy-duty Böhler Welding front cover lens Heavy-Duty Guardian 50, 62, 62F, Laser Guard (5 pcs): front cover lenses that take the spatter.
- Böhler Welding inner lens Guardian 50, 50M Air (5 pcs): inner lens, mounted from the back into the locators on the ADF.
- Böhler Welding ADF auto-darkening filter Guardian 50, 50M Air: spare Guardian 50 ADF, supplied without the Böhler Welding ADF battery CR2450 Guardian, Evolution Vision, Evolution V80, Laser Guard battery; held by the retainer Böhler Welding ADF retainer with screw Guardian 50, 50M Air, 50FM Air.
- Böhler Welding headgear Guardian 50, 62, 62F, Big Vision, Laser Guard and Böhler Welding sweatbands Guardian 50, 62, 62F, Big Vision, Laser Guard (2 pcs, front and rear): headgear and front and rear sweatbands.
- Böhler Welding face seal Guardian 50M Air, 50FM Air, 62 Air, 62F Air, Big Vision Air and Böhler Welding air duct Guardian 50M Air, 50FM Air, 62 Air, 62F Air, Big Vision Air: face seal and air duct connector.
- Böhler Welding standard air hose 100 cm Evolution Air, Guardian Air, Supplied Air or Böhler Welding FLEX flexible air hose up to 180 cm Evolution Air, Guardian Air, with the cover Böhler Welding air hose cover up to 120 cm Evolution Air, Guardian Air or Böhler Welding air hose cover up to 180 cm Evolution Air, Guardian Air: air hose to the unit.
- Böhler Welding magnifying lens (dioptre) +1.0 for welding helmets, Böhler Welding magnifying lens (dioptre) +1.5 for welding helmets, Böhler Welding magnifying lens (dioptre) +2.0 for welding helmets, Böhler Welding magnifying lens (dioptre) +2.5 for welding helmets: magnifying lenses from +1.0 to +2.5 dioptres.
- Böhler Welding inner lens plunger Guardian, Evolution, Laser Guard (2 pcs.) and Böhler Welding head top pouch (black): plunger for the inner lens and helmet pouch.
Standards and certificates
Shell: EN 175 B (medium energy impact). ADF: marked CE 4/9-13 to EN 379, class 1/1/1/2. Cover lenses: EN 166 1 B. The helmet complies with Regulation (EU) 2016/425. With Guardian Air the system reaches class TH3 to EN 12941, with Evolution Air class TH3 P R SL, and with Supplied Air class 4A to EN 14594:2018.
Documents
- Guardian 50M Air instruction manual (PDF, multilingual)
- Guardian Air instruction manual with the list of certified helmets (PDF, multilingual)
- Evolution Air instruction manual with the list of certified helmets (PDF, multilingual)
- Guardian 50M/50FM Air Kit fact sheet (PDF, English)
- PPE and accessories catalogue 2023/24 (PDF, English)
Frequently asked questions
Does the Guardian 50M Air offer shades 5-9?
No, the Guardian 50 ADF has one dark range, 9-13, plus grind mode. If you also need shades 5-9, choose the Böhler Welding Guardian 50FM Air flip-up welding helmet for PAPR powered air systems with a flip-up filter or the Böhler Welding Guardian 62 Air welding helmet for PAPR powered air systems with a 62 x 98 mm viewing area.
Can I work in it without the air supply?
No. The Guardian Air and Evolution Air manuals warn that with the unit switched off carbon dioxide builds up quickly under a sealed helmet and oxygen drops. Use it only with a running unit or with Supplied Air.
Which head sizes does the system fit?
The Guardian Air manual states that the helmets certified with it cover head circumferences from 535 to 600 mm. You adjust the headgear with the rear knob and the top strap.
How long does Guardian Air run on one charge?
Up to 8 h at minimum airflow with a new filter and a fully charged 5200 mAh battery, and 6 h at maximum airflow according to the manual. Charging takes 4 to 6 h.
Is it suitable for laser welding?
No. The Guardian 50M Air manual excludes laser welding. For laser work the manufacturer offers the Laser Guard Air with protection to EN 207.
