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Contitech FD138-18 Air Spring Rubber Double Convoluted G1/2 Gas Filled Shock Absorber
OEM NO.
AIRSUSTECH Part Number:2B8X2
Norgren M / 31082
Norgren Model: M/31082
Place of production: Imported from the UK
Brand Name: Nuoguan
Model: M/31082
Quality assurance: one year
Packaging cartons
ContiTech (Continental) Model: FD138-18 DS
Place of production: imported from Germany
Brand Name: ContiTech
Model: FD138-18
Quality assurance: one year
Packaging cartons
| Type | Order No. |
| Rubber bellows only | 66501 |
| with dismountable plates, G1/2 air inlet | 66505 |
Specifications and Detailed Technical Parameters:Norgren M / 31082
Top plate screw (nut) teeth: 4×M10
The screw center distance of the top cover plate: 155.5mm
Screw (nut) teeth of the bottom cover plate: 4×M10
The screw center distance of the bottom cover plate: 155.5 mm
Air hole/air inlet: G1/2
The screw center distance between the air hole and the nut: 72.75mm
Top plate diameter: 184mm
Diameter of the bottom cover: 184mm
Maximum diameter of rubber bellows: 230 mm
Natural diameter of rubber bellows: 205 mm
Working stroke: minimum 75 mm to maximum 250 mm
Maximum height: 250 mm
Minimum height: 75 mm
Stroke height: 175 mm
Without bumper block
With belt loop: One belt loop
Min. pressure 0 bar
Return force to min height ≤ 300 N
Overall weight 3.5 kg
| Vibration isolation – dynamic characteristic values Design height H: recommended 200mm, minimum 180mm | |||||||
| Pressure p [bar] | 3 | 4 | 5 | 6 | 7 | 8 | Vol. V [l] |
| Force (Load) [kN] | 3.9 | 5.3 | 6.7 | 8.2 | 9.7 | 11.3 | 4.1 |
| Spring rate [N/mm] | 76 | 97 | 118.5 | 140 | 161 | 181.5 | |
| Natural frequency [Hz] | 2.2 | 2.2 | 2.1 | 2.1 | 2.1 | 2.0 | |
| Pneumatic application – static characteristic values Force F [kN] | ||||||||
| Pressure p [bar] | 3 | 4 | 5 | 6 | 7 | 8 | Vol. V [l] | |
| Height H [mm] | 220 | 2.9 | 4.03 | 5.16 | 6.41 | 7.65 | 8.98 | 4.3 |
| 200 | 3.86 | 5.27 | 6.68 | 8.21 | 9.73 | 11.3 | 4.1 | |
| 150 | 5.9 | 8 | 10.1 | 12.4 | 14.7 | 16.9 | 3.2 | |
| 100 | 8.2 | 10.9 | 13.7 | 16.6 | 19.4 | 22.4 | 2 | |
We also have other Norgren typea, such as M/31021, M/31022, M/31023, M/31041, M/31042, M/31061, M/31062, M/31081, M/31082, M/31091, M/31092, M/31121, M/31122, M/31123. They are all frictionless operation, no maintenance or lubrication, Ideal for short stroke, high-force applications, high vibration isolation level and the installation is easy. These air springs not only can be used in truck and trailer,but also as Vibratory conveyors,such as Large drying machines,Centrifugal separators,Coordinate measuring tables and machinery and Commercial laundry machines.If you have any reuqirements, please feel free to contact us.