Fixed steel lamella bellows
Technical data
Have a particularly tough requirement? The fixed steel lamella bellow type fills the gap between telescopic steel covers and conventional bellows. The lamella bellows are based on our heat sealed or stitched designs. Each fold has its own guide frame, which is secured to the cover material. Lamellas made from stainless steel protect the bellows against red-hot and sharp-edged swarf as well as mechanical strain, while offering the compression and flexibility of traditional bellows.
Available in fixed or movable versions.
Flat bellow
| Fold Height (E) | Extensions Per Fold Flat (AZ) | Extensions Per Fold Folded Az | Width of Lamellas (K) |
| 24 | 27 | 33 | 61 |
| 30 | 39 | 45 | 76 |
| 35 | 49 | 55 | 81 |
| 40 | 59 | 65 | 91 |
| 45 | 69 | 75 | 101 |
Folded bellow
| Fold Height (E) | Extensions Per Fold Flat (AZ) | Extensions Per Fold Folded Az | Width of Lamellas (K) |
| 24 | 27 | 33 | 61 |
| 30 | 39 | 45 | 76 |
| 35 | 49 | 55 | 81 |
| 40 | 59 | 65 | 91 |
| 45 | 69 | 75 | 101 |
Standard mounting options
FULL FOLD
Allows for full extension of first fold for inside mounting.
EXTERNAL FLANGE
Allows for full extension of first fold with outside mounting above bellows.
Material options for fixed steel lamella bellows
Our bellows are made exclusively from high-quality plastic fabrics and foils. We select the cover material and processing according to the design ambient conditions. Decisive factors are the mechanical and thermal strain of the bellows as well as the type of swarf and aggressiveness of the agents used. Exact details of the used materials may be gathered from the table of materials above.
| Carrier | Coating Ext Int | Specification Number | Thickness (mm) | Heat Sealed | Stitched | Steel Clad | Round Stitched | Wear Resistance | Oil Grease Collant Resistance | Swarf Weld Splatter Forging Scale Resistance | Flame Resistance | Self Extinguishing | Surface Stability | Extension Compressions Ratio |
| Polyester | PUR / PUR | OZ-PUR | 0.35 | x | x | x | + | + | + | - | o | ++ | + | |
| Polyester | PUR / PUR | ERA 7810 | 0.22 | x | x | + | o | o | - | o | o | ++ | ||
| Kevlar | PUR / PUR | PUR-KEVLAR | 0.36 | x | x | x | x | ++ | + | + | + | + | ++ | + |
| Polyester | PVC / PVC | OZ-23 | 0.23 | x | x | + | - | - | - | - | o | ++ | ||
| Polyester | PVC / PVC | OZ-35 | 0.36 | x | x | x | + | + | o | - | o | + | + | |
| Nomex | ALU / - | ALUM-ARAMID | 0.35 | x | x | x | + | o | ++ | + | ++ | + | + | |
| Polyester | PTFE / PUR | PUR / TEFLON | 0.3 | x | x | x | ++ | ++ | o | - | o | ++ | + | |
| Nylon | NEP / NEP | NEOPRENE | 0.4 | x | x | x | x | ++ | ++ | ++ | - | o | ++ | o |
| Nylon | HYP / HYP | HYPALON | 0.4 | x | x | x | x | + | ++ | o | - | o | + | o |
++ Excellent + Good o Suited Under Certain Conditions - Unsuitable
Table of materials
| Commonly Used Materials | Details |
| Polyurethane (PUR) | Temperature Resistance up to 120°C |
| Polyurethane (PUR) Aluminized | Temperature Resistance up to 400°C (stitched type only) |
| Nomex | Flame Resistance. Ideal for laser machines |
| Kevlar | High Strength. Abrasion and puncture resistant. |
| Polyvinylchloride (PVC) | Self Extinguishing |
| Teflon Polytetrafluorethylen (PTFE) | Anti-adhesive. High chemical and thermal resilience. Corrosion proof. Dirt & water repelling. |
