Double Convoluted Air Actuator Reyco 19983-01 (21AR,74AR)
Replacement 1/4NPT Air Spring
.
Cross Reference
Reyco 19983-01 (21AR,74AR)
Goodyear 2B14-383
Goodyear 2B14 383
Goodyear 2B14383
Goodyear 578923356
Firestone W01-358-7557
Firestone W01 358 7557
Firestone W013587557
Firestone WO1-358-7557
Firestone WO1 358 7557
Firestone WO13587557
Firestone w01-358-7557
Firestone w01 358 7557
Firestone w01 358 7557
Firestone w013587557
Contitech FD 530-35 530
Contitech FD 530 35 530
Contitech FD530-35 530
Contitech FD530 35 530
Triangle 6412
Triangle 4530
Watson&Chalin AS-0089
Watson&Chalin AS 0089
Histeer 10316
Twthill 1998301
Specifications and Detailed Technical Parameters: 2B7557
Nut/blind nut
Top plate screw (nut) teeth: M18×1.5, M12×1.75
Screw (nut) teeth of the bottom cover plate: 2×M12×1.75
Air hole/air inlet/air fittings
Air hole/air inlet: 1/4NPT
The air hole/air inlet is combined with the screw nut
Cover plate
Top plate diameter: 289 mm
Bottom cover diameter: 289mm
The screw center distance of the bottom: 158mm
Bell rubber bellows
Rubber Bellow Diameter: 353mm
Stroke: 104mm to 391mm
Bumper block/bumper block
With bumper block
Belt loop/Belt loop
With one piece of belt loop
Min. pressure: 0 bar
Return force to min.height: ≤400N
Overall weight with clamped plates: 7.7kg
Vibration isolation - dynamic characteristic values
Design Height H: recommended 285mm, minimum 265mm
| Pressure p[bar] | 3 | 4 | 5 | 6 | 7 | 8 | Vol. V[l] |
| Force(Load) [KN] | 18.7 | 25.1 | 31.6 | 38.2 | 44.6 | 51.2 | 23.5 |
| Spring rate [N/cm] | 1770 | 2250 | 2700 | 3180 | 3640 | 4100 |
| Natural frequency [Hz] | 1.5 | 1.5 | 1.5 | 1.4 | 1.4 | 1.4 |
Pneumatic application-static characteristic values
Force F[KN]
| Pressure p [bar] | 3 | 4 | 5 | 6 | 7 | 8 | Vol. V [l] |
| Height H[mm] | 320 | 14.9 | 20.4 | 25.9 | 32.0 | 37.6 | 43.7 | 26.0 |
| 280 | 18.5 | 24.5 | 31.0 | 38.1 | 45.0 | 51.7 | 23.2 |
| 240 | 21.1 | 28.0 | 35.5 | 43.3 | 50.3 | 57.9 | 20.5 |
| 200 | 23.1 | 30.7 | 38.5 | 47.1 | 54.8 | 62.8 | 17.5 |
| 160 | 24.8 | 33.1 | 41.3 | 50.4 | 58.4 | 67.2 | 14.1 |
| 120 | 26.2 | 34.8 | 43.4 | 52.9 | 61.5 | 70.6 | 10.8 |
Double Convoluted Air Spring And Applications
There is a belt in the middle of the air spring. This belt is
called the air spring hoop, and the number of this hoop is one of
the basic elements to distinguish the number of convolutions.
The double convoluted industrial air spring is a curved capsule
made of rubber mesh. The two ends of the capsule need to be
connected by two steel plates to form two compressed air chambers.
The rubber and mesh cables themselves do not provide the bearing
capacity of the load, but are completed by the compressed air
filled into the capsule. The hyperbolic industrial air spring is an
excellent low-frequency vibration isolator. It relies on the
pressure change of the compressed air in the rubber bladder to
achieve the required stiffness. At present, the hyperbolic
industrial air spring is widely used in precision instruments,
precision machinery and special equipment. low frequency vibration
isolation.
Hyperbolic industrial air springs use the nonlinear restoring force
of compressed air to achieve shock isolation and buffering. Since
the United States first successfully used air springs as
shock-absorbing elastic elements in the industry, air springs have
gradually been widely used in many fields. Such as quenching tank
pushers, papermaking equipment presses, pickling tank lifts,
papermaking press rolls, straightening machines, cable tensioners,
etc.
