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 (in)
Sn - Maximum travel (in)
Ø1 - Piston Rod diameter (in)
Ø2 - Tube diameter (in)
Suitable for stroke
Bm - Loaded length (in)

Items 1-10 of 13

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Set Descending Direction
Ø1
Piston Rod diameter (in)
Ø2
Tube diameter (in)
Suitable for stroke L0
Unloaded length (in)
Sn
Maximum travel (in)
Bm
Loaded length (in)
SKU Tech Drawing Compare Read More 3D CAD Stock View prices - Add to Cart
0,2362 0,5906 50mm
60mm
73mm
75mm
80mm
90mm
100mm
6,2992 3,9370 2,7165 BEL-6-100 BEL-6-100 -
0,2362 0,5906 120mm
140mm
150mm
170mm
180mm
200mm
10,4331 7,8740 3,8189 BEL-6-200 BEL-6-200 -
0,2362 0,5906 20mm
40mm
3,1496 1,5748 1,5748 BEL-6-50 BEL-6-50 -
0,3150 0,7087 75mm
80mm
90mm
95mm
100mm
120mm
7,0866 4,7244 2,9921 BEL-8-120 BEL-8-120 -
0,3150 0,7087 140mm
150mm
160mm
170mm
180mm
200mm
12,0472 7,8740 5,1181 BEL-8-180 BEL-8-180 -
0,3150 0,7087 220mm
250mm
14,7638 9,8425 5,9055 BEL-8-250 BEL-8-250 -
0,3150 0,7087 50mm
60mm
3,7795 2,3622 1,8898 BEL-8-60 BEL-8-60 -
0,3937 0,8661 100mm
150mm
9,6457 5,9055 4,0551 BEL-10-150 BEL-10-150 -
0,3937 0,8661 200mm
250mm
14,3701 9,8425 5,5118 BEL-10-250 BEL-10-250 -
0,3937 0,8661 290mm
300mm
350mm
400mm
21,6535 15,7480 7,0866 BEL-10-400 BEL-10-400 -
  1. BEL-6-100
    In stock: 181
    Ø1 - Piston Rod diameter (in) 0,2362
    Ø2 - Tube diameter (in) 0,5906
    Suitable for stroke 50mm
    60mm
    73mm
    75mm
    80mm
    90mm
    100mm
    L0 - Unloaded length (in) 6,2992
    Sn - Maximum travel (in) 3,9370
    Bm - Loaded length (in) 2,7165
  2. BEL-6-200
    In stock: 206
    Ø1 - Piston Rod diameter (in) 0,2362
    Ø2 - Tube diameter (in) 0,5906
    Suitable for stroke 120mm
    140mm
    150mm
    170mm
    180mm
    200mm
    L0 - Unloaded length (in) 10,4331
    Sn - Maximum travel (in) 7,8740
    Bm - Loaded length (in) 3,8189
  3. BEL-6-50
    In stock: 445
    Ø1 - Piston Rod diameter (in) 0,2362
    Ø2 - Tube diameter (in) 0,5906
    Suitable for stroke 20mm
    40mm
    L0 - Unloaded length (in) 3,1496
    Sn - Maximum travel (in) 1,5748
    Bm - Loaded length (in) 1,5748
  4. BEL-8-120
    In stock: 204
    Ø1 - Piston Rod diameter (in) 0,3150
    Ø2 - Tube diameter (in) 0,7087
    Suitable for stroke 75mm
    80mm
    90mm
    95mm
    100mm
    120mm
    L0 - Unloaded length (in) 7,0866
    Sn - Maximum travel (in) 4,7244
    Bm - Loaded length (in) 2,9921
  5. BEL-8-180
    In stock: 138
    Ø1 - Piston Rod diameter (in) 0,3150
    Ø2 - Tube diameter (in) 0,7087
    Suitable for stroke 140mm
    150mm
    160mm
    170mm
    180mm
    200mm
    L0 - Unloaded length (in) 12,0472
    Sn - Maximum travel (in) 7,8740
    Bm - Loaded length (in) 5,1181
  6. BEL-8-250
    In stock: 220
    Ø1 - Piston Rod diameter (in) 0,3150
    Ø2 - Tube diameter (in) 0,7087
    Suitable for stroke 220mm
    250mm
    L0 - Unloaded length (in) 14,7638
    Sn - Maximum travel (in) 9,8425
    Bm - Loaded length (in) 5,9055
  7. BEL-8-60
    In stock: 211
    Ø1 - Piston Rod diameter (in) 0,3150
    Ø2 - Tube diameter (in) 0,7087
    Suitable for stroke 50mm
    60mm
    L0 - Unloaded length (in) 3,7795
    Sn - Maximum travel (in) 2,3622
    Bm - Loaded length (in) 1,8898
  8. BEL-10-150
    In stock: 185
    Ø1 - Piston Rod diameter (in) 0,3937
    Ø2 - Tube diameter (in) 0,8661
    Suitable for stroke 100mm
    150mm
    L0 - Unloaded length (in) 9,6457
    Sn - Maximum travel (in) 5,9055
    Bm - Loaded length (in) 4,0551
  9. BEL-10-250
    In stock: 175
    Ø1 - Piston Rod diameter (in) 0,3937
    Ø2 - Tube diameter (in) 0,8661
    Suitable for stroke 200mm
    250mm
    L0 - Unloaded length (in) 14,3701
    Sn - Maximum travel (in) 9,8425
    Bm - Loaded length (in) 5,5118
  10. BEL-10-400
    In stock: 191
    Ø1 - Piston Rod diameter (in) 0,3937
    Ø2 - Tube diameter (in) 0,8661
    Suitable for stroke 290mm
    300mm
    350mm
    400mm
    L0 - Unloaded length (in) 21,6535
    Sn - Maximum travel (in) 15,7480
    Bm - Loaded length (in) 7,0866

Items 1-10 of 13

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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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