The AirTAC AirTAC SDA40X40B 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 SDA40X40B is a double-acting single-rod compact cylinder engineered to deliver 628.3 N of push force and 527.8 N of pull force at 0.5 MPa. Its riveted body assembly significantly reduces axial mounting depth, making it highly effective for machinery where a traditional round-body unit would protrude too far. The 40 mm bore features a hard-anodized inner wall and operates on filtered air at 30-500 mm/s.
This specific SKU includes a male M14x1.5 piston rod thread for robust load coupling, paired with a 16 mm rod diameter. It relies on a fixed NBR bumper at each end to decelerate the stroke end rather than an adjustable air cushion. Because this configuration lacks the -S magnet option, it cannot host reed or electronic switches.
| Model | AirTAC SDA40X40B 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, utilizing the 628.3 N extend force to hold parts firmly against locator pins without excessive axial footprint.
Drives mechanical arms to fold corrugated box flaps at high speed, where the fixed NBR bumper absorbs the end-of-stroke impact safely.
Pushes parcels laterally onto adjacent roller lines, taking advantage of the short 40 mm stroke and male M14x1.5 thread for rigid diverter blade mounting.
When sizing this actuator, consider stepping down to the SDA32 which yields 402.1 N of push at 0.5 MPa, or moving up to the SDA50 which provides 981.7 N. For the SDA40X40B, 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. Confirm your ordering essentials: 40 mm bore, 40 mm stroke, PT1/8 port, male M14x1.5 rod thread, and no sensor magnet.
Note that a standard compact cylinder drifts when air pressure is lost or the valve is centered. The fixed NBR bumper only slows the piston near the stroke limits and does not function as a locking brake. If your application must hold a load without live pressure, install 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 force is 128 kgf at 1.0 MPa. It operates within a pressure range of 0.15-1.0 MPa, a proof pressure of 1.5 MPa, and a temperature span of -20 to +70 C.
No. It uses a fixed NBR bumper at the stroke ends to decelerate the piston, which is not a field-adjustable air cushion. Additionally, this SKU lacks the -S magnet code, so it cannot support reed or electronic switches. The -B code indicates it has a male M14x1.5 rod thread instead of the standard female M8x1.25.
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