The AirTAC AirTAC SDA40X40SH Compact Cylinder | 40mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø40mm bore and 40mm 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 SDA40X40SH is a double-acting, single-rod compact cylinder engineered with a 40 mm bore and 40 mm stroke. Its riveted assembly significantly reduces axial mounting depth compared to round-body units, saving valuable machine footprint. Delivering 628.3 N of push force at 0.5 MPa, this unit includes a built-in piston magnet for position sensing and utilizes fluororubber (FKM) seals for enhanced thermal and oil resistance.
This model features a 16 mm piston rod with a male M14x1.5 thread end for secure load coupling. The hard-anodized bore operates at speeds from 30-500 mm/s. End-stop deceleration is handled by a fixed NBR bumper rather than an adjustable air cushion, meaning external shock absorbers should be added for high-energy cycles. Air connections use a PT1/8 port.
| Model | AirTAC SDA40X40SH Compact Cylinder | 40mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø40 mm |
| Stroke | 40 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. |
| ×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).
Secures aluminum housings during machining operations, utilizing the 628.3 N extend force to hold parts rigidly against a locator stop.
Drives mechanical arms to tuck corrugated box flaps prior to sealing, where the 40 mm stroke and FKM seals withstand dusty, warm environments.
Actuates a routing diverter on a packaging line, moving lightweight goods with a safe working load well within the 377 N threshold.
When sizing this 40 mm bore actuator, compare its 628.3 N push at 0.5 MPa against adjacent options: stepping down, the SDA32 yields 402.1 N, while stepping up, the SDA50 provides 981.7 N. A practical safe working load is roughly 377 N (about 60% of the 0.5 MPa figure), translating to a vertical lift capacity of approximately 32 kg with a 2:1 safety margin. To finalize your order, confirm the 40 mm bore, 40 mm stroke, PT1/8 port, male M14x1.5 rod thread, the S magnet option, and the H FKM seal variant.
Note 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 bumper only decelerates the stroke end without acting as a brake. For suspended or vertical loads, integrate an external rod lock or a pilot-operated check valve.
Quick checklist
This 40 mm bore double-acting cylinder generates 628.3 N push and 527.8 N pull at 0.5 MPa, increasing to 879.6 N push and 738.9 N pull at 0.7 MPa. The theoretical maximum push is 128 kgf at 1.0 MPa. Operating pressure spans 0.15-1.0 MPa, with a proof pressure of 1.5 MPa and a speed range of 30-500 mm/s.
The S code indicates a built-in piston magnet designed to trigger AirTAC reed or electronic switches housed in the body grooves. End-of-stroke deceleration relies on a fixed NBR bumper, which is not field-adjustable and differs from an air cushion; high-speed applications may require external shock absorption.
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