The AirTAC AirTAC SDA20X65B Compact Cylinder | 20mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø20mm bore and 65mm 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 SDA20X65B 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 integrates the barrel, rear cover, piston, and rod into a highly shortened unit, saving substantial axial mounting depth where a traditional round-body actuator cannot fit. The bore is hard-anodized and uses a two-way piston seal for reliable pneumatic performance.
This specific SKU features a male M6x1.0 threaded piston rod end (the -B option) for direct mechanical coupling to your load, replacing the default female M4x0.7 thread. It operates on an M5x0.8 port at speeds between 30 and 500 mm/s. Because this configuration lacks the -S magnet, it cannot host reed or electronic switches; end-stop deceleration relies strictly on a fixed NBR bumper rather than an adjustable air cushion.
| Model | AirTAC SDA20X65B Compact Cylinder | 20mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø20 mm |
| Stroke | 65 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. |
| ×65 | 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 the Z-axis plunge on a compact PCB depaneling router, utilizing the 65 mm stroke and 157.1 N force to cleanly cut routing paths without excessive axial footprint.
Folds minor corrugated carton flaps prior to tape sealing, where the male M6x1.0 rod thread securely mounts a custom folding bracket and the shortened body fits tight conveyor side frames.
Actuates a precision fluid dispense valve on an analytical instrument, taking advantage of the 94 N safe working load to maintain consistent contact pressure against the substrate.
When sizing this 20 mm bore actuator, evaluate your force requirements carefully. Stepping down to the SDA16 yields 100.5 N of push at 0.5 MPa, while moving up to the SDA25 provides 245.4 N. For the SDA20X65B at 0.5 MPa, 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 20 mm bore, 65 mm stroke, M5x0.8 port, male M6x1.0 rod thread, and the absence of a sensor magnet.
Keep in mind that a standard compact cylinder does not hold its position if air pressure drops or the directional valve is centered. The piston will drift, and the fixed NBR bumper only decelerates the stroke near its end without acting as a lock or brake. If your application requires a held load without live pressure, you must integrate an external rod lock or a pilot-operated check valve.
Quick checklist
This double-acting cylinder generates 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 and 1.0 MPa, with a proof pressure of 1.5 MPa, and functions at speeds from 30 to 500 mm/s.
No adjustable air cushion exists; the cylinder uses a fixed NBR bumper at each end to decelerate the stroke end. For high-energy cycles, add an external shock absorber. Additionally, this specific SKU lacks a piston magnet, so it cannot accept reed or electronic switches. You would need the -S variant for sensing capabilities.
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