The AirTAC SDA20X140B Compact Cylinder | 20mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø20mm bore and 140mm 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 SDA20X140B is a double-acting single-rod compact cylinder engineered for tight axial spaces, utilizing a short riveted body to minimize mounting depth. It generates 157.1 N of push force and 131.9 N of pull force at 0.5 MPa, making it suitable for moderate load manipulation. This specific SKU includes a male M6x1.0 piston rod thread for secure mechanical coupling.
Because the 140 mm stroke exceeds the 100 mm maximum standard stroke for this 20 mm bore, this unit is a non-standard, made-to-order configuration. The bore is hard-anodized and uses a fixed NBR bumper at each end to decelerate the stroke end; note this is not an adjustable air cushion. This model lacks a piston magnet, so it cannot support magnetic sensing without specifying the -S option.
| Model | AirTAC SDA20X140B Compact Cylinder | 20mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø20 mm |
| Stroke | 140 mm |
| Acting type | Double acting |
| Port size | M5×0.8 |
| Rod end thread | M4×0.7 female / M6×1.0 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 90 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 | 157 N | 132 N |
| 0.7 MPa | 220 N | — |
| Max (@1.0 MPa) | 32 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. |
|---|---|
| 20 | 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).
Pushes small cartons on a packaging line where the 157.1 N extend force is sufficient to redirect lightweight items at high speeds.
Utilizes the 140 mm stroke to push printed circuit boards out of a testing fixture, taking advantage of the male M6x1.0 rod for a custom ejector toolhead.
Moves fluid dispensing heads across a 140 mm axis within compact laboratory analyzers where axial mounting depth is severely restricted.
When sizing this actuator, consider stepping down to the SDA16 which provides 100.5 N of push at 0.5 MPa, or moving up to the SDA25 which yields 245.4 N at the same pressure. To order, confirm the 20 mm bore, 140 mm non-standard stroke, M5x0.8 port, and the male M6x1.0 rod thread. Remember that a standard compact cylinder drifts when air pressure is lost or the valve is centered; the fixed bumper only decelerates near the stroke end and does not function as a lock. For applications requiring position holding, an external rod lock or pilot-operated check valve is necessary.
Quick checklist
This 20 mm bore double-acting cylinder provides 157.1 N push and 131.9 N pull at 0.5 MPa, and 219.9 N push at 0.7 MPa. The theoretical maximum push force is 32 kgf at 1.0 MPa. It operates between 0.15-1.0 MPa with a speed range of 30-500 mm/s.
No, this specific SKU does not include a piston magnet, so it cannot trigger AirTAC reed or electronic switches. You would need to specify the -S option to add a magnet for sensor grooves. Additionally, the 140 mm stroke is a non-standard made-to-order length exceeding the 100 mm standard maximum for this bore.
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