The AirTAC AirTAC SDA20X15SH Compact Cylinder | 20mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø20mm bore and 15mm 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 SDA20X15SH is a double-acting, single-rod compact cylinder engineered for tight machinery footprints. By utilizing a riveted assembly that joins the barrel, rear cover, and piston, it achieves an exceptionally short axial length where standard round-body units fail to fit. Delivering 157.1 N of push force at 0.5 MPa, it features an 8 mm piston rod and an M5x0.8 port.
This specific configuration includes the S option, embedding a piston magnet for direct compatibility with AirTAC reed or electronic switches via the body's integral grooves. The H designation denotes a fluororubber (FKM) seal variant, elevating heat and oil resistance over standard NBR. End-stops rely on a fixed rubber bumper to decelerate the motion, meaning it is not an adjustable air cushion.
| Model | AirTAC SDA20X15SH Compact Cylinder | 20mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø20 mm |
| Stroke | 15 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. |
| ×15 | 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).
Provides the precise 15 mm clamping stroke needed to secure circuit boards during automated routing and depaneling processes without stressing the substrate.
Handles the short, repetitive pressing motion for sealing pharmaceutical blister packs, leveraging the FKM seals to withstand elevated ambient temperatures.
Actuates small fluid dispenser valves in analytical lab equipment where the 8 mm rod and compact body depth minimize overall machine envelope.
When sizing this 20 mm bore unit, evaluate your force requirements carefully: stepping down to the SDA16 yields 100.5 N of push at 0.5 MPa, while stepping up to the SDA25 provides 245.4 N. For the SDA20X15SH, the safe working load is approximately 94 N (about 60% of the 157.1 N figure), translating to a vertical lift capacity of roughly 8 kg with a 2:1 safety margin. To finalize your order, confirm the 15 mm stroke, M5x0.8 port, female M4x0.7 rod thread, the required magnetic sensor, and the high-temperature FKM seal.
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. The fixed bumper only decelerates the stroke near its end and does not act as a locking brake. If your application demands position holding without live pressure, you must integrate an external rod lock or a pilot-operated check valve.
Quick checklist
This 20 mm bore cylinder generates 157.1 N push and 131.9 N pull at 0.5 MPa, and 219.9 N push and 184.7 N pull at 0.7 MPa. The theoretical maximum push is 32 kgf at 1.0 MPa. It operates between 0.15-1.0 MPa, with a proof pressure of 1.5 MPa, and runs at speeds of 30-500 mm/s.
It uses a fixed NBR bumper at each end to decelerate the piston, which is not a field-adjustable air cushion; for high-energy cycles, slow the approach or add an external shock absorber. The built-in S magnet allows tracking via AirTAC reed or electronic switches mounted in the body grooves.
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