The AirTAC AirTAC SDA40X140SB Compact Cylinder | 40mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø40mm bore and 140mm 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 SDA40X140SB is a double-acting single-rod compact cylinder engineered for tight axial spaces. By utilizing a riveted assembly that merges the barrel, rear cover, piston, and rod, it drastically reduces mounting depth compared to conventional round-body units. Delivering 628.3 N of push force and 527.8 N of pull force at 0.5 MPa, it incorporates a built-in magnet for position sensing and a male M14x1.5 piston rod end for direct load coupling.
Because the 140 mm stroke exceeds the 130 mm maximum standard stroke for this 40 mm bore, this specific configuration is treated as a non-standard, made-to-order item. The bore is hard-anodized for longevity, and end-stop deceleration is handled strictly by fixed NBR bumpers rather than adjustable air cushions. Operating at speeds between 30-500 mm/s, the body features integrated grooves compatible with AirTAC reed or electronic switches.
| Model | AirTAC SDA40X140SB Compact Cylinder | 40mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø40 mm |
| Stroke | 140 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. |
| ×140 | 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 routing flaps on high-speed logistics conveyors, utilizing the 140 mm stroke to swing packages into secondary sorting lanes without occupying excessive frame depth.
Deploys the 16 mm male-threaded rod to push corrugated box flaps into position during automated erecting cycles, relying on the 628.3 N extend force to overcome board stiffness.
Shifts heavy warp beams laterally on weaving machines, where the compact riveted body fits within narrow support columns and the magnetic sensor tracks full extension for loom synchronization.
When sizing this actuator, evaluate your force requirements against adjacent bores: 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. For the SDA40X140SB specifically, the 628.3 N output at 0.5 MPa translates to a safe working load of roughly 377 N (about 60% capacity) or a vertical lift capability near 32 kg with a 2:1 safety margin. Ensure your ordering essentials are correct: 40 mm bore, 140 mm non-standard stroke, PT1/8 port, built-in magnet (-S), and the male M14x1.5 rod thread (-B).
Keep in mind that a standard compact cylinder will not hold a load if air pressure drops or the directional valve centers; the piston will drift, and the fixed NBR bumper only decelerates near the stroke end without acting as a mechanical lock. If your application demands fail-safe load holding, 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, increasing to 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. It operates within a pressure range of 0.15-1.0 MPa, handles a proof pressure of 1.5 MPa, and functions across a temperature span of -20 to +70 C.
No, the 140 mm stroke is non-standard and made-to-order since it exceeds the 130 mm maximum standard stroke for this bore. Additionally, it uses fixed NBR bumpers at both ends to decelerate the piston rather than field-adjustable air cushions; for high-energy cycles, you should add an external shock absorber or slow the approach speed.
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