The AirTAC AirTAC SDA40X30BH Compact Cylinder | 40mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø40mm bore and 30mm 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 SDA40X30BH is a double-acting, single-rod compact cylinder engineered with a 40 mm bore and 30 mm stroke. Its short, riveted assembly significantly reduces axial mounting depth compared to round-body units, making it highly effective for machines where space footprint is critical. This specific configuration delivers 628.3 N of push force and 527.8 N of pull force at 0.5 MPa, operating efficiently at speeds between 30-500 mm/s.
This SKU includes the -B option, meaning it utilizes a male M14x1.5 threaded piston rod instead of the standard female M8x1.25, providing a robust mechanical coupling for your load. Additionally, the -H designation indicates the use of a fluororubber (FKM) seal variant, offering enhanced resistance to higher temperatures and oil exposure. End-of-stroke deceleration is handled by a fixed NBR bumper rather than an adjustable air cushion, so external shock absorbers should be added for high-energy cycles.
| Model | AirTAC SDA40X30BH Compact Cylinder | 40mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø40 mm |
| Stroke | 30 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. |
| ×30 | 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).
Drives the folding jaws on automated packaging lines, utilizing the 628.3 N push force to form corrugated cartons securely before tape application.
Actuates routing gates on conveyor systems to sort heavy pallets, where the male M14x1.5 rod end provides a rigid mount for the diverter arm.
Assists in ejecting formed plastic parts from molds, benefiting from the FKM seals that withstand ambient heat and oil mist near the machinery.
When sizing this actuator, consider stepping down to the SDA32, which provides 402.1 N of push force at 0.5 MPa, or stepping up to the SDA50, which yields 981.7 N at the same pressure. For the SDA40X30BH, the computed safe working load is approximately 377 N (about 60% of the 628.3 N figure), translating to a vertical lift capacity of roughly 32 kg with a 2:1 safety margin. Remember that a standard compact cylinder will drift and cannot hold a load if air pressure is lost or the valve is centered; maintaining a vertical load requires an external rod lock or a pilot-operated check valve. Ensure your ordering essentials match this exact specification: 40 mm bore, 30 mm stroke, PT1/8 port, male M14x1.5 rod thread, FKM seals, and no sensor magnet.
Quick checklist
This 40 mm bore double-acting cylinder provides 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 and a temperature range of -20 to +70 C.
No, this specific SKU does not include the -S option, meaning it lacks a piston magnet and cannot be used with AirTAC reed or electronic switches. You would need to order the -S variant to utilize the magnetic-switch grooves machined around the body for position sensing.
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