The AirTAC SDA12X40SB Compact Cylinder | 12mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø12mm bore and 40mm stroke, M5×0.8 air ports and a riveted short body that saves mounting depth. Sensor slots around the body accept magnetic switches for position sensing.
The AirTAC SDA12X40SB is a double-acting, single-rod compact cylinder engineered for tight machinery footprints. Its riveted assembly minimizes axial mounting depth where standard round bodies fail to fit, yielding a push force of 56.5 N and a pull force of 42.4 N at 0.5 MPa. The 12 mm bore features a hard-anodized inner wall and operates on filtered 40 um air.
This specific configuration includes a built-in piston magnet (-S) for position sensing via AirTAC reed or electronic switches seated in the body grooves. It also features a male M5x0.8 piston rod thread (-B) for direct load coupling. End-stops rely on a fixed NBR bumper that decelerates the piston near stroke termination rather than an adjustable air cushion.
| Model | AirTAC SDA12X40SB Compact Cylinder | 12mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø12 mm |
| Stroke | 40 mm |
| Acting type | Double acting |
| Port size | M5×0.8 |
| Rod end thread | M3×0.5 female / M5×0.8 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 50 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 | 57 N | 42 N |
| 0.7 MPa | 79 N | — |
| Max (@1.0 MPa) | 12 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. |
|---|---|
| 12 | Bore size in mm. |
| ×40 | 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 a small vacuum pick head for surface mount electronics assembly, utilizing the 40 mm stroke and male M5x0.8 rod to seat delicate chips accurately.
Precisely pushes a micro-valve plunger for reagent dosing, where the compact 12 mm body depth conserves valuable space on crowded diagnostic benches.
Kicks miniature plastic fasteners out of an injection mold cavity, relying on the 56.5 N extend force and the fixed NBR bumper to halt travel smoothly.
If your mechanism loses air pressure or the valve centers, the piston will drift because the fixed bumper only absorbs end-of-travel impacts, not gravity; holding a suspended load requires an external rod lock or pilot-operated check valve. Verify your order specifies the 40 mm stroke, M5x0.8 port, male M5x0.8 rod end, and the required magnetic sensor option.
Quick checklist
This 12 mm bore double-acting cylinder generates a push force of 56.5 N and a pull force of 42.4 N at 0.5 MPa. At 0.7 MPa, the push increases to 79.2 N. The theoretical maximum push force is 12 kgf at the 1.0 MPa pressure limit.
No, the SDA12X40SB uses a fixed NBR bumper at each end to decelerate the piston, which is not field-adjustable like an air cushion. For high-speed or high-energy cycles, you should slow the approach speed or install an external shock absorber.
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