industrial-springs.com 
Rubber bellow
Order Monday-Thursday before 15:30 and Friday before 14:45 and we’ll dispatch your order the same day with expected delivery within 2-4 days. This applies to all stocked rubber bellows.
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A rubber bellows can be mounted on our gas springs and ensures that the piston rod is protected against impurities and dirt. This protection extends the life of the gas spring. One end of the rubber bellows is attached over the cylinder. The other end is attached to the piston rod just under the thread. The gas spring can still move unhindered and the stroke length is minimally reduced by the distance the rubber is mounted onto the piston rod. The rubber bellows can withstand UV light and oil, and can be used in all types of environment.
| View prices - Add to Cart | Ø1 Piston Rod diameter (mm) |
Ø2 Tube diameter (mm) |
L0 Unloaded length (mm) |
Sn Maximum travel (mm) |
Bm Loaded length (mm) |
Suitable for stroke | Material | SKU | Stock | Tech Drawing | Read More | 3D CAD | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 6.00 | 15.00 | 160.00 | 100.00 | 69.00 |
50mm 60mm 73mm 75mm 80mm 90mm 100mm |
NBR | BEL-6-100 |
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| 6.00 | 15.00 | 265.00 | 200.00 | 97.00 |
120mm 140mm 150mm 170mm 180mm 200mm |
NBR | BEL-6-200 |
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| 6.00 | 15.00 | 80.00 | 40.00 | 40.00 |
20mm 40mm |
NBR | BEL-6-50 |
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| 8.00 | 18.00 | 306.00 | 200.00 | 130.00 |
140mm 150mm 160mm 170mm 180mm 200mm |
NBR | BEL-8-180 |
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| 8.00 | 18.00 | 375.00 | 250.00 | 150.00 |
220mm 250mm |
NBR | BEL-8-250 |
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| 8.00 | 18.00 | 96.00 | 60.00 | 48.00 |
50mm 60mm |
NBR | BEL-8-60 |
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| 8.00 | 18.00 | 180.00 | 120.00 | 76.00 |
75mm 80mm 90mm 95mm 100mm 120mm |
NBR | BEL-8-120 |
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| 10.00 | 22.00 | 245.00 | 150.00 | 103.00 |
100mm 150mm |
NBR | BEL-10-150 |
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| 10.00 | 22.00 | 365.00 | 250.00 | 140.00 |
200mm 250mm |
NBR | BEL-10-250 |
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| 10.00 | 22.00 | 550.00 | 400.00 | 180.00 |
290mm 300mm 350mm 400mm |
NBR | BEL-10-400 |
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- BEL-6-100In stock: 437
Ø1 - Piston Rod diameter (mm) 6.00Ø2 - Tube diameter (mm) 15.00L0 - Unloaded length (mm) 160.00Sn - Maximum travel (mm) 100.00Bm - Loaded length (mm) 69.00Suitable for stroke 50mm
60mm
73mm
75mm
80mm
90mm
100mmMaterial NBR - BEL-6-200In stock: 287
Ø1 - Piston Rod diameter (mm) 6.00Ø2 - Tube diameter (mm) 15.00L0 - Unloaded length (mm) 265.00Sn - Maximum travel (mm) 200.00Bm - Loaded length (mm) 97.00Suitable for stroke 120mm
140mm
150mm
170mm
180mm
200mmMaterial NBR - BEL-6-50In stock: 920
Ø1 - Piston Rod diameter (mm) 6.00Ø2 - Tube diameter (mm) 15.00L0 - Unloaded length (mm) 80.00Sn - Maximum travel (mm) 40.00Bm - Loaded length (mm) 40.00Suitable for stroke 20mm
40mmMaterial NBR - BEL-8-180In stock: 340
Ø1 - Piston Rod diameter (mm) 8.00Ø2 - Tube diameter (mm) 18.00L0 - Unloaded length (mm) 306.00Sn - Maximum travel (mm) 200.00Bm - Loaded length (mm) 130.00Suitable for stroke 140mm
150mm
160mm
170mm
180mm
200mmMaterial NBR - BEL-8-250In stock: 171
Ø1 - Piston Rod diameter (mm) 8.00Ø2 - Tube diameter (mm) 18.00L0 - Unloaded length (mm) 375.00Sn - Maximum travel (mm) 250.00Bm - Loaded length (mm) 150.00Suitable for stroke 220mm
250mmMaterial NBR - BEL-8-60In stock: 313
Ø1 - Piston Rod diameter (mm) 8.00Ø2 - Tube diameter (mm) 18.00L0 - Unloaded length (mm) 96.00Sn - Maximum travel (mm) 60.00Bm - Loaded length (mm) 48.00Suitable for stroke 50mm
60mmMaterial NBR - BEL-8-120In stock: 135
Ø1 - Piston Rod diameter (mm) 8.00Ø2 - Tube diameter (mm) 18.00L0 - Unloaded length (mm) 180.00Sn - Maximum travel (mm) 120.00Bm - Loaded length (mm) 76.00Suitable for stroke 75mm
80mm
90mm
95mm
100mm
120mmMaterial NBR - BEL-10-150In stock: 405
Ø1 - Piston Rod diameter (mm) 10.00Ø2 - Tube diameter (mm) 22.00L0 - Unloaded length (mm) 245.00Sn - Maximum travel (mm) 150.00Bm - Loaded length (mm) 103.00Suitable for stroke 100mm
150mmMaterial NBR - BEL-10-250In stock: 449
Ø1 - Piston Rod diameter (mm) 10.00Ø2 - Tube diameter (mm) 22.00L0 - Unloaded length (mm) 365.00Sn - Maximum travel (mm) 250.00Bm - Loaded length (mm) 140.00Suitable for stroke 200mm
250mmMaterial NBR - BEL-10-400In stock: 290
Ø1 - Piston Rod diameter (mm) 10.00Ø2 - Tube diameter (mm) 22.00L0 - Unloaded length (mm) 550.00Sn - Maximum travel (mm) 400.00Bm - Loaded length (mm) 180.00Suitable 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.
