The AirTAC AirTAC SDA40X150S Compact Cylinder | 40mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø40mm bore and 150mm 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 SDA40X150S is a double-acting, single-rod compact cylinder engineered to deliver 628.3 N of push force at 0.5 MPa. Its riveted assembly merges the barrel, rear cover, piston, and rod into a highly shortened unit, drastically reducing axial mounting depth compared to conventional round-body actuators. This space-saving footprint is ideal for tight machine layouts, while the hard-anodized bore ensures long service life.
This specific 150 mm stroke configuration exceeds the 130 mm maximum standard stroke for the 40 mm bore, making it a non-standard, made-to-order item. The unit includes a built-in piston magnet (-S) for position sensing via AirTAC reed or electronic switches mounted in the body grooves. End-stopping relies on a fixed NBR bumper rather than an adjustable air cushion, meaning high-energy cycles may require external shock absorption.
| Model | AirTAC SDA40X150S Compact Cylinder | 40mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø40 mm |
| Stroke | 150 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. |
| ×150 | 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).
Pushes light-to-medium parcels on a distribution hub conveyor using the 628.3 N extend force, with the compact riveted body fitting neatly between tight roller pitches.
Ejects formed plastic parts from a molding press, utilizing the 150 mm stroke to clear the tooling while the PT1/8 port ensures adequate flow for rapid cycling.
Acts as a pneumatic stop for incoming pallets on an assembly line, where the 16 mm rod handles the impact and the fixed NBR bumper absorbs the end-of-stroke energy.
When sizing this actuator, stepping down to the SDA32 yields 402.1 N of push force at 0.5 MPa, while moving up to the SDA50 provides 981.7 N. For the SDA40X150S, the safe working load is approximately 377 N (about 60% of the 0.5 MPa figure), translating to a vertical lift capacity of roughly 32 kg with a 2:1 safety margin. Because this 150 mm stroke is non-standard and made-to-order, confirm the extended lead time. Ensure your ordering essentials include the 40 mm bore, 150 mm stroke, PT1/8 port, female M8x1.25 rod thread, and the required -S magnet.
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. The fixed NBR bumper only decelerates the stroke near the end limits and does not function as a mechanical lock. If your application requires strict position holding, you must integrate an external rod lock or a pilot-operated check valve.
Quick checklist
This 40 mm bore double-acting cylinder provides 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. Operating pressure ranges from 0.15 to 1.0 MPa, with a proof pressure of 1.5 MPa and a speed range of 30-500 mm/s.
No, the SDA series uses a fixed NBR bumper at each end to decelerate the piston, which is not a field-adjustable air cushion. Because the 150 mm stroke is non-standard and made-to-order, high-speed applications may require an external shock absorber to manage the kinetic energy. The -S option denotes a built-in magnet for use with AirTAC reed or electronic switches.
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