The AirTAC SDA80X40S Compact Cylinder | 80mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø80mm bore and 40mm stroke, PT3/8 air ports and a riveted short body that saves mounting depth. Sensor slots around the body accept magnetic switches for position sensing.
The AirTAC SDA80X40S is a double-acting, single-rod compact cylinder engineered to deliver a substantial 2513.3 N push force at 0.5 MPa. Its riveted assembly merges the barrel, rear cover, piston, and rod into a highly shortened axial package, conserving valuable machine footprint where a conventional round-body unit would be too deep. The 80 mm bore features a hard-anodized inner wall and a two-way piston seal for reliable operation.
This specific configuration includes a built-in piston magnet (-S) for direct mounting of AirTAC reed or electronic switches along the body grooves. End-of-stroke energy is managed strictly by a fixed NBR bumper, which decelerates the piston near the end limits but is not a field-adjustable air cushion. With a 25 mm piston rod and a 40 mm stroke, this model provides robust actuation within a space-optimized envelope.
| Model | AirTAC SDA80X40S Compact Cylinder | 80mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø80 mm |
| Stroke | 40 mm |
| Acting type | Double acting |
| Port size | PT3/8 |
| Rod end thread | M14×1.5 female / M22×1.5 male (B) |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 500 mm/s |
| Cushion | Fixed NBR bumper (both ends) |
| Max standard stroke | Up to 120 mm |
Specifications follow the official AirTAC SDA compact-cylinder datasheet. Confirm against the product label before installation. Port thread: PT (standard). Rod: female thread (blank) / male thread (B).
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa | 3519 N | — |
| Max (@1.0 MPa) | 513 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
| SDA | Compact (thin) double-acting cylinder series. |
|---|---|
| 80 | Bore size in mm. |
| ×40 | Stroke length in mm. |
| S | Built-in magnet for magnetic-switch position sensing (omit = no magnet). |
| B | Male-thread piston rod (omit = female-thread rod). |
Thread: PT standard. Related SDA-family variants: SSA (single-acting push), STA (single-acting pull), SDAD (double rod), SDAJ (adjustable stroke), SDAT (duplex), SDAW (duplex-end).
Drives the ejector plate on a 150-ton injection molding machine, utilizing the 2513.3 N extend force to break heavy plastic parts free from the mold cavity.
Actuates a vertical material clamp on a mechanical stamping press, using its short riveted body to fit within the tight clearance of the press upright.
Deploys a heavy-duty stopper block in a high-mass pallet transfer line, absorbing end-stop impact via the fixed NBR bumper while handling 128 kg loads.
When sizing this 80 mm bore unit, evaluate your force requirements carefully. Stepping down to the SDA63 yields 1558.6 N push at 0.5 MPa, while stepping up to the SDA100 provides 3927 N. Confirm your ordering essentials: 80 mm bore, 40 mm stroke, PT3/8 port, female M14x1.5 rod thread, and the -S magnet option.
Keep in mind that a standard compact cylinder cannot hold a load if air pressure drops or the valve is centered; the piston will drift, and the fixed NBR bumper only decelerates it near the stroke end without acting as a mechanical lock. If your application requires position holding without live pressure, you must integrate an external rod lock or a pilot-operated check valve.
Quick checklist
This double-acting cylinder generates 2513.3 N push and 2267.8 N pull at 0.5 MPa. At 0.7 MPa, push increases to 3518.6 N and pull to 3175 N. The theoretical maximum push force is 513 kgf at 1.0 MPa, with an operating pressure range of 0.15-1.0 MPa.
No, the SDA80X40S uses a fixed NBR bumper at each end to decelerate the piston near stroke completion; it does not feature an adjustable air cushion. For high-speed or high-energy cycles, you should add an external shock absorber or slow down the approach speed.
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