The Guardian 50FM inner lens is the face-side protective lens of the Guardian 50FM Air helmet with flip-up filter. One pack contains 5 lenses. The Guardian 50FM Air has its own ADF Böhler Welding ADF auto-darkening filter Guardian 50FM Air and its own inner lens, so this one fits only this model.
Technical specifications
| Catalogue number | 86691 |
|---|---|
| Brand | Böhler Welding |
| Compatible with | Guardian 50FM Air |
| Type | inner lens |
| Fitting | from the back, into the ADF locators |
| Helmet ADF | 86697, viewing area 50 x 100 mm |
| Pack quantity | 5 pcs |
Who it is for
For welders using the Guardian 50FM Air with powered air, also from the Air Kit, who need to replace the inner lens behind the flip-up ADF.
Key features
- A lens only for the Guardian 50FM Air with ADF 86697 and a 50 x 100 mm viewing area.
- Different from the Guardian 50 and 50M Air lens, although the filter viewing area is the same.
- 5 lenses per pack.
- For removing the lenses there are the plungers Böhler Welding inner lens plunger Guardian, Evolution, Laser Guard (2 pcs.) (2 pcs).
- Fitted from the back into the locators on the ADF, as described in the Guardian 50FM Air manual.
Compatible with
- Böhler Welding Guardian 50FM Air flip-up welding helmet for PAPR powered air systems and the kit Böhler Welding Guardian 50FM Air Kit, flip-up welding helmet with Guardian Air PAPR
Standards and certificates
The Guardian 50FM Air carries the markings EN 175 (helmet), EN 379 (ADF) and EN 166 (lenses). The marked protection applies only to the complete set of lenses and retaining parts installed as described in the manual, so never use the filter without the inner lens. The manual recommends a daily check of the helmet.
Documents
- Guardian 50FM Air instruction manual (PDF, multilingual)
- Guardian 50M Air Kit and 50FM Air Kit fact sheet (PDF, English)
- PPE and accessories catalogue 2023/24 (PDF, English)
Frequently asked questions
Does it fit the Guardian 50M Air?
No. The Guardian 50M Air has the Guardian 50 filter and inner lens Böhler Welding inner lens Guardian 50, 50M Air (5 pcs).
Which other lenses does the Guardian 50FM Air use?
The front cover lens Böhler Welding front cover lens Guardian 50, 62, 62F, Laser Guard (10 pcs) (or the reinforced Böhler Welding front cover lens Heavy-Duty Guardian 50, 62, 62F, Laser Guard (5 pcs)) and the grinding visor Böhler Welding grinding visor Guardian 62F, 62F Air, 50FM Air (2 pcs) under the flip-up element.
When should I replace the Guardian 50FM inner lens?
When it cracks, gets scratched or starts to impair vision. The manual treats the lenses as wear parts to be replaced regularly with genuine ones.




