The AirTAC AirTAC SDA40X35B 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 SDA40X35B is a double-acting, single-rod compact cylinder engineered to deliver 628.3 N of push force and 527.8 N of pull force at 0.5 MPa. Its riveted body design integrates the barrel, rear cover, piston, and rod into a highly space-efficient package, saving valuable axial mounting depth in tight machinery layouts. The 40 mm bore features a hard-anodized inner wall and operates on filtered air at 30-500 mm/s.
This specific SKU includes the B option, meaning it utilizes a male M14x1.5 piston rod thread for robust load coupling, rather than the default female M8x1.25 thread. It connects via PT1/8 ports and relies on a fixed NBR bumper at each end to decelerate the stroke. Because this unit lacks the S magnet option, it cannot directly host AirTAC reed or electronic switches.
| Model | AirTAC SDA40X35B 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 onto a CNC machining center bed, using the 628.3 N extend force to lock parts firmly against locators during high-speed milling.
Drives mechanical arms to tuck and fold corrugated cardboard flaps on a continuous packaging line, where the short 35 mm stroke and compact body depth prevent interference with moving conveyors.
Pushes small metal pins out of a progressive die set, leveraging the male M14x1.5 rod thread to attach a custom ejection tool head for reliable part release.
When sizing this actuator, 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. The 628.3 N output at 0.5 MPa translates to a safe working load of roughly 377 N (about 60 percent capacity) and a vertical lift capability of approximately 32 kg with a 2:1 safety margin. To finalize your order, confirm the 40 mm bore, 35 mm stroke, PT1/8 port, male M14x1.5 rod thread, and the absence of a sensor magnet.
Keep in mind that a standard compact cylinder will not hold a load if air pressure drops or the valve is centered; the piston will drift, and the fixed NBR bumper only slows the travel near the end caps. If your application demands position holding without live pressure, you must integrate an external rod lock or a pilot-operated check valve into your pneumatic circuit.
Quick checklist
This 40 mm bore double-acting cylinder generates 628.3 N push and 527.8 N pull at 0.5 MPa, and 879.6 N push at 0.7 MPa. The theoretical maximum push force is 128 kgf at 1.0 MPa. It operates within a pressure range of 0.15-1.0 MPa, handles temperatures from -20 to +70 C, and runs at speeds between 30 and 500 mm/s.
No, this specific SKU does not include the S option, so it lacks the internal piston magnet required for sensing. To use reed or electronic switches, you must select the SDA40X35BS variant. Additionally, end-of-stroke deceleration is handled solely by fixed NBR bumpers, not an adjustable air cushion.
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