The AirTAC AirTAC SDA40X15BH Compact Cylinder | 40mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø40mm bore and 15mm 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 SDA40X15BH is a double-acting single-rod compact cylinder engineered for tight axial spaces. It delivers 628.3 N of push force and 527.8 N of pull force at 0.5 MPa. The riveted body assembly significantly reduces overall length compared to round-body units, saving valuable machine footprint. This specific SKU includes an FKM fluororubber seal for enhanced thermal and oil resistance.
This model features a 16 mm piston rod with a male M14x1.5 thread end for robust load coupling. End-of-stroke deceleration relies on a fixed NBR bumper rather than an adjustable air cushion. Because this configuration lacks the -S magnet option, it cannot support magnetic reed or electronic switches.
| Model | AirTAC SDA40X15BH Compact Cylinder | 40mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø40 mm |
| Stroke | 15 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. |
| ×15 | 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 workpieces in a CNC machining center using the 628.3 N extend force, while the short 15 mm stroke minimizes fixture bulk.
Actuates folding mechanisms on a packaging line where the FKM seals withstand elevated ambient temperatures near heat-shrink tunnels.
Ejects small metal stamped parts from a progressive die, utilizing the male M14x1.5 rod thread for secure tooling attachment.
When sizing this 40 mm bore, stepping down to the SDA32 yields 402.1 N of push at 0.5 MPa, while stepping up to the SDA50 provides 981.7 N. A practical safe working load for this unit is roughly 377 N (about 60% of the 0.5 MPa push force), translating to a vertical lift capacity of approximately 32 kg with a 2:1 safety margin. To order, confirm the 15 mm stroke, PT1/8 port, male M14x1.5 rod thread, FKM seals, and the absence of a sensor magnet. Note that a standard cylinder drifts if air pressure is lost; maintaining a load requires an external rod lock or pilot-operated check valve.
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 is 128 kgf at 1.0 MPa. Operating pressure ranges from 0.15-1.0 MPa, with a speed of 30-500 mm/s.
It uses a fixed NBR bumper at each end to decelerate the piston, which is not an adjustable air cushion. For high-energy cycles, add an external shock absorber. Additionally, it does not hold position naturally; if air is lost, the piston drifts, requiring a pilot-operated check valve or rod lock to hold a load.
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