Rubber bellows
Rubber bellows for gas springs - Protects against dirt.
Rubber bellows are stock items and are available for fast delivery.
Our rubber bellows have been developed mainly for our gas springs. However, they can also be used for other purposes. The rubber bellows are secured with a couple of strips, which prolongs the service life of the piston rod and thus also of the gas spring. The material can tolerate UV, oil, etc. If a gas spring is mounted in a dirty environment, it will always be a good idea to protect it from dirt and grime by using rubber bellows.
| View prices - Add to Cart | Ø1 Piston Rod diameter (in) |
Ø2 Tube diameter (in) |
L0 Unloaded length (in) |
Sn Maximum travel (in) |
Bm Loaded length (in) |
Suitable for stroke | Material | SKU | Stock | Tech Drawing | Read More | 3D CAD | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0.2362 | 0.5906 | 6.2992 | 3.9370 | 2.7165 |
50mm 60mm 73mm 75mm 80mm 90mm 100mm |
NBR | BEL-6-100 |
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| 0.2362 | 0.5906 | 10.4331 | 7.8740 | 3.8189 |
120mm 140mm 150mm 170mm 180mm 200mm |
NBR | BEL-6-200 |
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| 0.2362 | 0.5906 | 3.1496 | 1.5748 | 1.5748 |
20mm 40mm |
NBR | BEL-6-50 |
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| 0.3150 | 0.7087 | 12.0472 | 7.8740 | 5.1181 |
140mm 150mm 160mm 170mm 180mm 200mm |
NBR | BEL-8-180 |
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| 0.3150 | 0.7087 | 14.7638 | 9.8425 | 5.9055 |
220mm 250mm |
NBR | BEL-8-250 |
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| 0.3150 | 0.7087 | 3.7795 | 2.3622 | 1.8898 |
50mm 60mm |
NBR | BEL-8-60 |
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| 0.3150 | 0.7087 | 7.0866 | 4.7244 | 2.9921 |
75mm 80mm 90mm 95mm 100mm 120mm |
NBR | BEL-8-120 |
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| 0.3937 | 0.8661 | 9.6457 | 5.9055 | 4.0551 |
100mm 150mm |
NBR | BEL-10-150 |
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| 0.3937 | 0.8661 | 14.3701 | 9.8425 | 5.5118 |
200mm 250mm |
NBR | BEL-10-250 |
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| 0.3937 | 0.8661 | 21.6535 | 15.7480 | 7.0866 |
290mm 300mm 350mm 400mm |
NBR | BEL-10-400 |
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- BEL-6-100In stock: 250
Ø1 - Piston Rod diameter (in) 0.2362Ø2 - Tube diameter (in) 0.5906L0 - Unloaded length (in) 6.2992Sn - Maximum travel (in) 3.9370Bm - Loaded length (in) 2.7165Suitable for stroke 50mm
60mm
73mm
75mm
80mm
90mm
100mmMaterial NBR - BEL-6-200In stock: 300
Ø1 - Piston Rod diameter (in) 0.2362Ø2 - Tube diameter (in) 0.5906L0 - Unloaded length (in) 10.4331Sn - Maximum travel (in) 7.8740Bm - Loaded length (in) 3.8189Suitable for stroke 120mm
140mm
150mm
170mm
180mm
200mmMaterial NBR - BEL-6-50In stock: 0
Ø1 - Piston Rod diameter (in) 0.2362Ø2 - Tube diameter (in) 0.5906L0 - Unloaded length (in) 3.1496Sn - Maximum travel (in) 1.5748Bm - Loaded length (in) 1.5748Suitable for stroke 20mm
40mmMaterial NBR - BEL-8-180In stock: 357
Ø1 - Piston Rod diameter (in) 0.3150Ø2 - Tube diameter (in) 0.7087L0 - Unloaded length (in) 12.0472Sn - Maximum travel (in) 7.8740Bm - Loaded length (in) 5.1181Suitable for stroke 140mm
150mm
160mm
170mm
180mm
200mmMaterial NBR - BEL-8-250In stock: 185
Ø1 - Piston Rod diameter (in) 0.3150Ø2 - Tube diameter (in) 0.7087L0 - Unloaded length (in) 14.7638Sn - Maximum travel (in) 9.8425Bm - Loaded length (in) 5.9055Suitable for stroke 220mm
250mmMaterial NBR - BEL-8-60In stock: 346
Ø1 - Piston Rod diameter (in) 0.3150Ø2 - Tube diameter (in) 0.7087L0 - Unloaded length (in) 3.7795Sn - Maximum travel (in) 2.3622Bm - Loaded length (in) 1.8898Suitable for stroke 50mm
60mmMaterial NBR - BEL-8-120In stock: 455
Ø1 - Piston Rod diameter (in) 0.3150Ø2 - Tube diameter (in) 0.7087L0 - Unloaded length (in) 7.0866Sn - Maximum travel (in) 4.7244Bm - Loaded length (in) 2.9921Suitable for stroke 75mm
80mm
90mm
95mm
100mm
120mmMaterial NBR - BEL-10-150In stock: 442
Ø1 - Piston Rod diameter (in) 0.3937Ø2 - Tube diameter (in) 0.8661L0 - Unloaded length (in) 9.6457Sn - Maximum travel (in) 5.9055Bm - Loaded length (in) 4.0551Suitable for stroke 100mm
150mmMaterial NBR - BEL-10-250In stock: 259
Ø1 - Piston Rod diameter (in) 0.3937Ø2 - Tube diameter (in) 0.8661L0 - Unloaded length (in) 14.3701Sn - Maximum travel (in) 9.8425Bm - Loaded length (in) 5.5118Suitable for stroke 200mm
250mmMaterial NBR - BEL-10-400In stock: 317
Ø1 - Piston Rod diameter (in) 0.3937Ø2 - Tube diameter (in) 0.8661L0 - Unloaded length (in) 21.6535Sn - Maximum travel (in) 15.7480Bm - Loaded length (in) 7.0866Suitable for stroke 290mm
300mm
350mm
400mmMaterial NBR
Rubber bellows are made from NBR rubber, which is resistant to UV light, salt and oil. Theoretical operating temperature between -20 °C to +60 °C.
The L0 measurement (unloaded length) is for guidance only. The rubber bellows by design can be pulled and pressed, and so change length. Variations in the L0 length have no impact on the usefulness of the bellows.
The bellows should not scrape/press against any other object, as wear will then cause the bellows to break.
When fitting bellows, use the length of the compressed bellows. This length is given in our table (Bm).
The bellows must be fitted before the end fittings are fitted to the piston rod.
The bellows are primarily designed for gas springs with threads, but can also be fitted to gas springs with welded loops.
The bellows must be fitted to the cylinder X number of mm (Bm) from the end of the cylinder, where the piston rod emerges.
- There is a line marked on the cylinder X number of mm (Bm) from the end of the cylinder, where the piston rod emerges.
- The bellows are guided with the largest diameter down over the piston rod and over the cylinder towards the line.
- The bellows are secured to the last piece of rubber on the cylinder using the strip provided.
- The bellows are secured to the piston rod using the strip provided on the last piece of rubber when the end of the rubber is just under the thread.
- Cut off the remainder of the strip.