The AirTAC AirTAC SDA40X45H 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 SDA40X45H is a double-acting single-rod compact cylinder engineered with a 40 mm bore and 45 mm stroke. It generates 628.3 N of push force and 527.8 N of pull force at 0.5 MPa. This specific SKU features an H designation, utilizing fluororubber (FKM) seals for enhanced thermal and oil resistance compared to standard NBR. The hard-anodized bore and two-way piston seal ensure durable, leak-free operation.
Its short riveted body integrates the barrel, rear cover, piston, and rod into a highly compact assembly, drastically reducing axial mounting depth where a conventional round-body actuator would not fit. End-of-stroke deceleration is handled by a fixed NBR bumper rather than an adjustable air cushion. Because this configuration lacks the S option, it has no piston magnet and cannot support magnetic sensing.
| Model | AirTAC SDA40X45H 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, leveraging the 628.3 N extend force and FKM seals to withstand cutting fluid exposure.
Indexes cardboard cartons into a high-temperature adhesive station, where the compact 45 mm stroke and fluororubber seals resist thermal degradation.
Actuates a sorting flap on a packaging line, using the short riveted body to fit within tight 40 mm lateral conveyor frame clearances.
When sizing this actuator, evaluate your force requirements carefully. Stepping down, the SDA32 bore provides 402.1 N of push at 0.5 MPa, whereas stepping up to the SDA50 yields 981.7 N. Based on the 628.3 N output at 0.5 MPa, a safe working load is approximately 377 N (60 percent capacity), translating to a vertical lift capability of roughly 32 kg with a 2:1 safety margin. To finalize your order, confirm the 40 mm bore, 45 mm stroke, PT1/8 port, female M8x1.25 rod thread, and the FKM seal option. Note that a standard compact cylinder drifts when air pressure is lost or the valve is centered, as the fixed bumper only decelerates the stroke end rather than locking the load; utilize an external rod lock or pilot-operated check valve if position holding is mandatory.
Quick checklist
This 40 mm bore double-acting cylinder provides 628.3 N push and 527.8 N pull at 0.5 MPa, or 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 the operational speed spans 30-500 mm/s.
No, this specific SKU does not include a piston magnet, so it cannot support reed or electronic switches. You would need to specify the S option (SDA40X45HS) to enable sensing. Additionally, end stops are managed by a fixed NBR bumper that decelerates the piston, which is not an adjustable air cushion.
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