Sewn Fabric Bellows
PAR Sewn Bellows, noted for their durability, are a cost-effective solution for applications where small or medium-batch quantities are required. They are widely used in the protection of the precision shafts and mechanisms of pneumatic cylinders.
• Cylinder rods
• Screw jacks
• Linear-motion rails
• Ballscrews
Traditional fabrics have been supplemented with specially developed materials to counter contaminants; from everyday rust, dust and dirt to weld splatter; and temperatures from -60°C to +250°C. Food grade materials are available.
Split and Resealable Bellows
Where it is not possible or practical to dismantle equipment, sewn bellows can be supplied ready for fitting around a shaft. The split is closed after installation using a ‘tape and clip’ joint.
Standard Material Selection Chart (Other materials available)
| Bellow Material |
Thickness
(mm) |
Temp Range
(°C) |
Extension/Compression |
| Vee Depth |
| 20mm |
32mm |
50mm |
| Neoprene Coated Nylon |
0.5 |
-20 to +100 |
11:1 |
17:1 |
27:1 |
| Neoprene Coated Nylon |
0.75 |
-20 to +100 |
8:1 |
12:1 |
20:1 |
| Neoprene Coated Nylon |
1.0 |
-20 to +100 |
n/a |
9:1 |
14:1 |
| Neoprene Coated Nomex |
0.65 |
-20 to +100 |
8:1 |
12:1 |
20:1 |
| PVC Coated Nylon |
0.5 |
-20 to +60 |
11:1 |
17:1 |
27:1 |
| Hypalon Coated Nylon |
0.5 |
-20 to +100 |
11:1 |
17:1 |
27:1 |
| Silicon Coated Glass Cloth |
0.4 |
-60 to +250 |
11:1 |
17:1 |
27:1 |
| Aluminium Coated Glass Cloth |
0.4 |
-50 to +200 |
11:1 |
17:1 |
27:1 |
| Silicone Coated Kevlar |
0.7 |
-50 to +150 |
8:1 |
12:1 |
20:1 |
BACK