The AirTAC AirTAC SDA40X45B Compact Cylinder | 40mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø40mm bore and 45mm 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 SDA40X45B is a double-acting, single-rod compact cylinder engineered to deliver a push force of 628.3 N and a pull force of 527.8 N at 0.5 MPa. Its riveted body assembly significantly reduces axial mounting depth compared to conventional round-body units, making it highly effective for machinery where space savings are critical. The hard-anodized bore ensures smooth, low-friction operation throughout its 30-500 mm/s speed range.
This specific SKU features a male M14x1.5 threaded piston rod for robust mechanical coupling to your load. End-of-stroke deceleration is handled by a fixed NBR bumper rather than an adjustable air cushion, meaning operators should slow the approach or utilize external shock absorbers for high-energy cycles. Note that this configuration omits the piston magnet, so it cannot directly host AirTAC reed or electronic switches.
| Model | AirTAC SDA40X45B Compact Cylinder | 40mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø40 mm |
| Stroke | 45 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. |
| ×45 | 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 engine blocks during machining operations, utilizing the 628.3 N extend force to lock heavy castings firmly against the table locators.
Drives the mechanical arms that tuck corrugated box flaps prior to sealing, where the shortened body length keeps the packaging line footprint minimal.
Actuates a diverter gate on a pallet handling conveyor, moving the 16 mm male-threaded rod to route heavy timber pallets onto a secondary track.
When sizing this actuator, evaluate your force requirements carefully: 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. The 628.3 N output at 0.5 MPa translates to a safe working load of roughly 377 N (about 60 percent capacity) or a vertical lift capability near 32 kg with a 2:1 safety margin. If your mechanism must maintain vertical position during air loss or valve centering, be aware this unit will drift; an external rod lock or pilot-operated check valve is required to hold the load securely.
To order, confirm the 40 mm bore, 45 mm stroke, and PT1/8 porting. This variant includes the B option, specifying a male M14x1.5 rod end instead of the standard female thread. Because it lacks the S option, magnetic sensing is not supported on this specific unit.
Quick checklist
This double-acting cylinder generates a push force of 628.3 N and a pull force of 527.8 N at 0.5 MPa. At 0.7 MPa, the push increases to 879.6 N. The theoretical maximum push is 128 kgf at 1.0 MPa. It operates within a pressure range of 0.15-1.0 MPa, has a proof pressure of 1.5 MPa, and functions in temperatures from -20 to +70 C.
You cannot adjust the end-of-stroke damping because it relies on a fixed NBR bumper, not an adjustable air cushion; for high-speed cycles, use an external shock absorber. Additionally, this specific SKU lacks the internal magnet, so it cannot support reed or electronic switches. You would need the SDA40X45BS variant for position sensing.
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