The AirTAC AirTAC SDA40X35BH Compact Cylinder | 40mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø40mm bore and 35mm 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 SDA40X35BH is a double-acting, single-rod compact cylinder engineered with a 40 mm bore and 35 mm stroke. It generates 628.3 N of push force and 527.8 N of pull force at 0.5 MPa. The riveted body design drastically reduces axial mounting depth compared to round-body alternatives, saving valuable machine footprint. This specific SKU includes a male M14x1.5 piston rod end for robust load coupling and fluororubber (FKM) seals for enhanced thermal and oil resistance.
The bore features a hard-anodized inner wall and relies on a fixed NBR bumper at each end to decelerate the stroke. Because this configuration omits the -S magnet code, it cannot support AirTAC magnetic reed or electronic switches. Operating pressure spans 0.15-1.0 MPa, with a speed range of 30-500 mm/s. Note that the fixed bumper only absorbs end-stop energy; it does not function as an adjustable air cushion or a braking mechanism.
| Model | AirTAC SDA40X35BH Compact Cylinder | 40mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø40 mm |
| Stroke | 35 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. |
| ×35 | 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 CNC machining centers, utilizing the 628.3 N extend force to lock parts firmly against locator stops.
Drives mechanical arms to fold corrugated carton flaps on high-speed packaging lines, where the short 35 mm stroke provides rapid cycling.
Actuates routing gates on parcel conveyor systems, using the male M14x1.5 rod to push packages into designated chutes.
When sizing this 40 mm bore, 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 at the same pressure. For this model, a 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. Confirm your ordering essentials: 40 mm bore, 35 mm stroke, PT1/8 port, male M14x1.5 rod thread, FKM seals, and no sensor magnet.
A standard SDA body does not hold its position if air pressure drops or the valve is centered; the piston will drift. The fixed NBR bumper only decelerates the load near the stroke end and acts neither as a lock nor a brake. If your application requires position holding without live pressure, you must integrate an external rod lock or a 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, the push force is 879.6 N and the pull force is 738.9 N. The theoretical maximum push force is 128 kgf at 1.0 MPa. The operating pressure range is 0.15-1.0 MPa, with a proof pressure of 1.5 MPa.
No, this specific SKU lacks the -S piston magnet, so it cannot trigger AirTAC reed or electronic switches. Additionally, it uses fixed NBR bumpers for end-stop deceleration rather than adjustable air cushions. For high kinetic energy loads, slow the approach speed or add external shock absorbers.
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