EB-250-85 Festo Bellows Cylinder Norgren PM/31091 8.25X1 Industrial Air Spring
❶Nut / Blind Nut
Top Cover Plate Screw (Nut) Tooth : 2 pcs X M8X1.25
Screw Center Distance of Top Cover Plate : 89 mm
Bottom Cover Plate Screw (Nut) Tooth : 2 pcs X M8X1.25
Screw Center Distance of Bottom Cover Plate : 89 mm
❷ Gas Hole / Air inlet / Air Fitting
Gas Hole / Air inlet : G3/4
❸ Cover Plate
Top Cover Plate Diameter (Width): 160 mm
Bottom Cover Plate Diameter (Width): 160 mm
❹Rubber Bellows
Rubber Bellows Natural Diameter : 220 mm
Rubber Bellows Natural Height : 110 mm
❺ Bumper block / Buffer block
Without Bumper Block
❻ Girdle Hoop / Girdle Ring
With Girdle Hoop :Without Girdle Hoop
| Type | B1 ±0.2 | D1 ∅ max. | D2 ∅ | D3 ∅ | EE | F1 ±0.2 | H1 | H2 min. | H3 max. | smax | Tilt angle α max. |
| EB-145-60 | 20 | 145 | 160 | 90 | Gx | – | 90 | 50 | 110 | 10 | 20° |
| EB-165-65 | 44.5 | 165 | 180 | 108 | G1⁄4 | 0 | 90 | 51 | 115 | 10 | 20° |
| EB-215-80 | 70 | 215 | 230 | 141 | G3⁄4 | 0 | 110 | 50 | 135 | 10 | 20° |
| EB-250-85 | 89 | 250 | 265 | 161 | G3⁄4 | 38.1 | 110 | 51 | 140 | 10 | 20° |
| EB-325-95 | 157.5 | 325 | 340 | 228 | G1⁄4 | 73 | 130 | 51 | 150 | 10 | 15° |
| EB-385-115 | 158.8 | 385 | 400 | 287 | G1⁄4 | 79.4 | 145 | 51 | 175 | 10 | 15° |
OEM Original Equipment Manufacturer:
| BELLOW NO. | COMPLETE NO. |
| AIRKRAFT 112005 | AIRKRAFT 111004 |
| CONTITECH FS 200-10 60319 | CONTITECH FS 200-10 |
| FIRESTONE FLEX 115 | 2681 045000 |
| FIRESTONE W01-358-0118 | FIRESTONE W01 M58 6374 |
| | DUNLOP (FR) 8"1/4x1 S09101 |
| | BOSCH 822419004 |
| | FESTO EB-250-85 |
| | NORGREN PM/31091 (81/4x1) |
| | WEFORMA WBE 400-E1 |
Notes:
The stroke of the bellows cylinder can be formed into a circular arc. In this case, the indicated inclination angle α must not be exceeded. During the installation process, it must be noted that the minimum height H2 cannot be lower than any height, and the maximum height H3 will not exceed any given point. The height of the center of the plate X is the decisive factor in the thrust calculation.
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Eb-250-85 Festo Bellows Cylinder Norgren Pm/31091 8.25x1 Images
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