Rubber bellow

Tech Drawing - 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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What are rubber bellows?
 

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.

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

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View prices - Add to Cart Ø1
Piston Rod diameter (mm)
Suitable for stroke Ø2
Tube diameter (mm)
L0
Unloaded length (mm)
Sn
Maximum travel (mm)
Bm
Loaded length (mm)
Material SKU Stock Tech Drawing Read More 3D CAD
6.00 50mm
60mm
73mm
75mm
80mm
90mm
100mm
15.00 160.00 100.00 69.00 NBR BEL-6-100 BEL-6-100
6.00 120mm
140mm
150mm
170mm
180mm
200mm
15.00 265.00 200.00 97.00 NBR BEL-6-200 BEL-6-200
6.00 20mm
40mm
15.00 80.00 40.00 40.00 NBR BEL-6-50 BEL-6-50
8.00 75mm
80mm
90mm
95mm
100mm
120mm
18.00 180.00 120.00 76.00 NBR BEL-8-120 BEL-8-120
8.00 140mm
150mm
160mm
170mm
180mm
200mm
18.00 306.00 200.00 130.00 NBR BEL-8-180 BEL-8-180
8.00 220mm
250mm
18.00 375.00 250.00 150.00 NBR BEL-8-250 BEL-8-250
8.00 50mm
60mm
18.00 96.00 60.00 48.00 NBR BEL-8-60 BEL-8-60
10.00 100mm
150mm
22.00 245.00 150.00 103.00 NBR BEL-10-150 BEL-10-150
10.00 200mm
250mm
22.00 365.00 250.00 140.00 NBR BEL-10-250 BEL-10-250
10.00 290mm
300mm
350mm
400mm
22.00 550.00 400.00 180.00 NBR BEL-10-400 BEL-10-400

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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.

Tolerances

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.
Rubber bellow

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