The AirTAC AirTAC SDA40X30S Compact Cylinder | 40mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø40mm bore and 30mm stroke, PT1/8 air ports and a riveted short body that saves mounting depth. Sensor slots around the body accept magnetic switches for position sensing.
The AirTAC SDA40X30S is a double-acting, single-rod compact cylinder engineered to deliver 628.3 N of push force at 0.5 MPa. Its riveted body assembly significantly reduces axial mounting depth compared to conventional round-body units, saving valuable machine footprint in tight assemblies. The bore is hard-anodized for longevity, and the integrated piston magnet enables position detection.
This 40mm bore model features a 16mm piston rod and a PT1/8 port. End-stopping is handled by a fixed NBR bumper rather than an adjustable air cushion, meaning high-energy cycles may require an external shock absorber to prevent wear. The -S option ensures compatibility with AirTAC reed or electronic switches mounted in the body grooves.
| Model | AirTAC SDA40X30S Compact Cylinder | 40mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø40 mm |
| Stroke | 30 mm |
| Acting type | Double acting |
| Port size | PT1/8 |
| Rod end thread | M8×1.25 female / M14×1.5 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 | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 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. |
|---|---|
| 40 | Bore size in mm. |
| ×30 | 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 a Z-axis routing spindle on a printed circuit board panelizer, utilizing the short 30mm stroke and 628.3 N force to plunge and retract the cutting bit accurately.
Folds minor corrugated box flaps prior to tape sealing, where the compact riveted body fits neatly between side conveyor belts without adding machine width.
Acts as a hard mechanical stop for 40mm aluminum profiles arriving at a cutting station, using the 16mm rod to absorb the 527.8 N retract pull during part ejection.
When sizing this unit, stepping down to the SDA32 yields 402.1 N of push force at 0.5 MPa, while stepping up to the SDA50 provides 981.7 N. For this 40mm bore, a safe working load is approximately 377 N (60% of the 0.5 MPa rating), translating to a vertical lift capacity of about 32 kg with a 2:1 safety margin. Keep in mind that a standard compact cylinder drifts when air pressure is lost or the valve is centered; the fixed bumper only decelerates the stroke end and does not function as a locking brake. If your process demands position holding without live pressure, specify an external rod lock or a pilot-operated check valve. To order, confirm the 40mm bore, 30mm stroke, PT1/8 port, female M8x1.25 rod thread, and the required -S magnet.
Quick checklist
This double-acting cylinder generates 628.3 N push and 527.8 N pull at 0.5 MPa, and 879.6 N push and 738.9 N pull at 0.7 MPa. The theoretical maximum push force is 128 kgf at 1.0 MPa, with an operating pressure range of 0.15-1.0 MPa.
No, it uses a fixed NBR bumper at each end to decelerate the piston near stroke completion. This bumper is not field-adjustable and is not a locking brake. For high-speed or high-energy cycles, you should add an external shock absorber or slow down the approach speed.
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