The AirTAC AirTAC SDA40X65BH Compact Cylinder | 40mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø40mm bore and 65mm 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 SDA40X65BH is a double-acting compact cylinder engineered to deliver 628.3 N of push force at 0.5 MPa. Its short riveted assembly minimizes axial mounting depth, offering a distinct footprint advantage over longer round-body units in tight machine layouts. This specific SKU includes an FKM fluororubber seal, providing enhanced thermal and oil resistance for demanding environments.
This model features a 16 mm piston rod with a male M14x1.5 thread for robust load coupling, paired with PT1/8 air ports. End-of-travel deceleration relies on a fixed NBR bumper rather than an adjustable cushion. Note that this configuration omits the piston magnet, so it cannot directly host AirTAC reed or electronic switches.
| Model | AirTAC SDA40X65BH Compact Cylinder | 40mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø40 mm |
| Stroke | 65 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. |
| ×65 | 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 castings during CNC machining. The FKM seals handle splash from cutting fluids, while the male M14x1.5 rod threads mount custom jaws securely.
Applies consistent downward pressure on carton flaps in high-temperature packaging lines. The compact riveted body fits neatly within narrow folder mechanisms.
Acts as a localized knock-out pin driver for small plastic parts. The 65 mm stroke provides ample extraction travel without consuming excessive mold base depth.
When sizing this actuator, consider stepping down to the SDA32 which yields 402.1 N at 0.5 MPa, or moving up to the SDA50 which provides 981.7 N at 0.5 MPa. Based on the 628.3 N push figure, the safe working load is approximately 377 N (60% capacity), translating to a vertical lift capability of about 32 kg with a 2:1 safety margin.
Ensure your ordering essentials match this configuration: 40 mm bore, 65 mm stroke, PT1/8 port, male M14x1.5 rod thread, and FKM seals. Keep in mind that a standard double-acting cylinder drifts when air pressure is lost or the valve is centered—the fixed bumper only slows the piston near stroke end and does not function as a locking brake. To maintain position, 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, and 879.6 N push at 0.7 MPa. The theoretical maximum push force is 128 kgf at 1.0 MPa. It operates between 0.15-1.0 MPa, with a proof pressure of 1.5 MPa, and runs at speeds of 30-500 mm/s.
No, this specific SKU lacks the internal piston magnet, meaning it cannot host AirTAC reed or electronic switches. You would need the -S option for sensing capabilities. Additionally, it uses a fixed NBR bumper for end-stop deceleration rather than an adjustable air cushion.
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