- Double Convolution Air Spring
- 2-Ply Bellows
- Style #21-2
- Blind Nuts w/Bumper
- 1/4 NPT Air Inlet
description
- Firestone air springs are time-proven industrial actuators and vibration isolators. As an actuator, air springs offer a unique ability to provide linear or angular motion in a very low profile when compared to air cylinders. Their unique, flexible properties lend well to numerous duties on machines that press, tension, roll, convey, lift and package. As an isolator, air springs are effective in reducing the harmful effects of vibration.
applications
- Industrial actuator
- Vibration isolator
- Press machines
- Conveyors
- Lifts
- Packaging machines
features
- Two-ply, fabric-reinforced rubber
- Flexible media
- Provides linear and angular motion
- Reduces harmful effects of vibration
| Air Spring Description | Blind Nuts w/Bumper |
| Bumpers | w/Bumpers |
| Style No. | 21-2 |
| Force @ 1 in Stroke | 11330 lbf |
| Force @ Maximum Stroke (80 psi) | 5850 lbf |
| Force @ 2 in Stroke | N/A |
| Force @ 4 in Stroke | N/A |
| Force @ 9 in Stroke | N/A |
| Convolutions | Double |
| Air Inlet Type | NPT |
| Air Inlet | 1/4 in |
| Force @ 6 in Stroke | N/A |
| End Closure | Type 2 Bead Plate |
| Temperature Range [Min] | -35 °F |
| Bellows Type | Double Convolution |
| Temperature Range [Max] | 135 °F |
| Blind Tap Spacing | 6 1/4 in |
| Stroke Length [Max] | 8.700 in |
| Pressure [Max] | 100 psi |
| Force @ 5 in Stroke | N/A |
| Compressed Height | 4.8 in |
| Force @ Stroke (80 psi) | 10670 lbf @ 3 in, 11330 lbf @ 1 in |
| Force @ 3 in Stroke | 10670 lbf |
| Force @ 8 in Stroke | N/A |
| Force @ 12 in Stroke | N/A |
| Weight | 18.2 LB |

