Rubber bellows

Technical drawing - 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.

Shop By
Shopping Options
L0 - Unloaded length (mm)
Sn - Maximum travel (mm)
Ø1 - Piston Rod diameter (mm)
Ø2 - Tube diameter (mm)
Suitable for stroke
Bm - Loaded length (mm)

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View prices - Add to Cart Material Ø1
Piston Rod diameter (mm)
Ø2
Tube diameter (mm)
Suitable for stroke L0
Unloaded length (mm)
Sn
Maximum travel (mm)
Bm
Loaded length (mm)
SKU Stock Tech Drawing Read More 3D CAD
NBR 6,00 15,00 20mm
40mm
80,00 40,00 40,00 BEL-6-50 BEL-6-50
NBR 8,00 18,00 50mm
60mm
96,00 60,00 48,00 BEL-8-60 BEL-8-60
NBR 6,00 15,00 50mm
60mm
73mm
75mm
80mm
90mm
100mm
160,00 100,00 69,00 BEL-6-100 BEL-6-100
NBR 8,00 18,00 75mm
80mm
90mm
95mm
100mm
120mm
180,00 120,00 76,00 BEL-8-120 BEL-8-120
NBR 14,00 28,00 100mm
150mm
230,00 150,00 93,00 BEL-14-150 BEL-14-150
NBR 6,00 15,00 120mm
140mm
150mm
170mm
180mm
200mm
265,00 200,00 97,00 BEL-6-200 BEL-6-200
NBR 10,00 22,00 100mm
150mm
245,00 150,00 103,00 BEL-10-150 BEL-10-150
NBR 14,00 28,00 200mm
250mm
335,00 250,00 127,00 BEL-14-250 BEL-14-250
NBR 8,00 18,00 140mm
150mm
160mm
170mm
180mm
200mm
306,00 200,00 130,00 BEL-8-180 BEL-8-180
NBR 10,00 22,00 200mm
250mm
365,00 250,00 140,00 BEL-10-250 BEL-10-250

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Material

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.

Tolerance

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.

Fitting And Use

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.

  1. There is a line marked on the cylinder X number of mm (Bm) from the end of the cylinder, where the piston rod emerges.
  2. The bellows are guided with the largest diameter down over the piston rod and over the cylinder towards the line.
  3. The bellows are secured to the last piece of rubber on the cylinder using the strip provided.
  4. 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.
  5. Cut off the remainder of the strip.

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