The AirTAC AirTAC SDA20X20B Compact Cylinder | 20mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø20mm bore and 20mm 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 SDA20X20B is a double-acting, single-rod compact cylinder engineered to deliver 157.1 N of push force and 131.9 N of pull force at 0.5 MPa. Its riveted assembly unites the barrel, rear cover, piston, and rod into a highly shortened axial footprint, conserving valuable machine depth where conventional round bodies cannot fit. The internal bore wall receives a hard-anodized treatment paired with a two-way piston seal for low-friction service.
This specific SKU features a male M6x1.0 threaded piston rod end for secure mechanical coupling to your load, differing from the standard female M4x0.7. It lacks a piston magnet, so position sensing is not supported on this unit. End-stop deceleration relies strictly on fixed NBR bumpers rather than a field-adjustable air cushion, meaning operators should moderate approach speeds or utilize external shock absorbers for high kinetic energy loads.
| Model | AirTAC SDA20X20B Compact Cylinder | 20mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø20 mm |
| Stroke | 20 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. |
| ×20 | 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).
Uses the 20mm stroke and 157.1 N push force to eject separated circuit boards from a routing fixture without damaging delicate surface-mount components.
Employs the male M6x1.0 rod end to drive a compact folding arm, tucking corrugated box flaps at high cycling rates within a tight packaging machine envelope.
Precisely triggers a metered adhesive valve where the short riveted body minimizes overall length, saving vertical space on a crowded benchtop automation frame.
When sizing this 20mm bore 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. For the SDA20X20B, the computed 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 20mm bore, 20mm stroke, M5x0.8 port, male M6x1.0 rod thread, and the absence of a magnet.
Note that a standard double-acting cylinder cannot hold a load if air pressure drops or the directional valve centers; the piston will drift. The fixed NBR bumper only decelerates the stroke near its end and does not function as a locking brake. If your application demands position holding without live pressure, integrate an external rod lock or a pilot-operated check valve.
Quick checklist
At 0.5 MPa, this double-acting 20mm bore cylinder provides 157.1 N of push and 131.9 N of pull. At 0.7 MPa, push increases to 219.9 N. The theoretical maximum push is 32 kgf at 1.0 MPa. Operating pressure ranges from 0.15 to 1.0 MPa, with a proof pressure of 1.5 MPa, and the speed range is 30-500 mm/s.
No, this specific SKU does not have a piston magnet, so it cannot accept AirTAC reed or electronic switches. To add position sensing, you must select the -S option code variant. Additionally, this unit uses a fixed NBR bumper at each end for deceleration rather than an adjustable air cushion.
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