The AirTAC AirTAC SDA40X45BH 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 SDA40X45BH is a double-acting, single-rod compact cylinder engineered with a 40 mm bore and 45 mm stroke. It delivers a robust 628.3 N push and 527.8 N pull force at 0.5 MPa. The riveted unibody design drastically reduces axial mounting depth compared to conventional round-body units, making it highly effective for machines where footprint depth is restricted. This specific SKU features a male M14x1.5 piston rod thread for secure mechanical load coupling.
Built with a fluororubber (FKM) seal, this variant provides superior resistance to higher temperatures and oily environments compared to standard NBR. The unit relies on a fixed NBR bumper at each end to decelerate the stroke, which is not an adjustable air cushion. Because this configuration lacks the -S magnet option, it cannot support magnetic position sensing.
| Model | AirTAC SDA40X45BH 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 CNC machining. The FKM seals withstand oily spray, while the 628.3 N push force locks heavy castings firmly against the locating pins.
Presses cardboard carton flaps in a high-temperature packaging line. The compact 40 mm bore saves lateral space on the folder, and the male M14x1.5 rod threads directly into the pressure plate.
Acts as an adjustable back-gauge stop on a sheet metal bending brake. The 45 mm stroke retracts quickly to clear the workpiece, and the fixed NBR bumpers absorb the rapid end-of-travel impact.
When sizing this actuator, evaluate your force margins carefully. Stepping down to the SDA32 yields 402.1 N push at 0.5 MPa, whereas 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 of approximately 32 kg with a 2:1 safety factor. If your mechanism must maintain vertical position during air loss or valve centering, note that this cylinder will drift; an external rod lock or pilot-operated check valve is required for secure holding.
Confirm your ordering essentials before checkout: 40 mm bore, 45 mm stroke, PT1/8 port, male M14x1.5 rod thread (B), FKM seals (H), and no sensor magnet. Operating speed spans 30-500 mm/s, with a maximum standard stroke limit of 130 mm for this bore size.
Quick checklist
At 0.5 MPa, the push force is 628.3 N and the pull force is 527.8 N. At 0.7 MPa, push is 879.6 N and pull is 738.9 N. 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.
No. This specific SKU does not include the -S magnet option, so it cannot trigger AirTAC reed or electronic switches. You would need to select the -S variant to enable position sensing. Additionally, the end caps use fixed NBR bumpers rather than adjustable air cushions, so external shock absorbers are recommended for high-speed loads.
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