The AirTAC AirTAC SDA20X5SBH Compact Cylinder | 20mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø20mm bore and 5mm 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 SDA20X5SBH is a double-acting single-rod compact cylinder engineered for extremely tight axial spaces. It delivers a push force of 157.1 N and a pull force of 131.9 N at 0.5 MPa. Built with a hard-anodized bore and a riveted body, this unit minimizes machine footprint where a standard round-body actuator simply cannot fit. The -H designation indicates fluororubber (FKM) seals, providing enhanced resistance to high heat and oil exposure.
This specific configuration includes a built-in piston magnet (-S) for position detection using an AirTAC reed or electronic switch, and a male M6x1.0 threaded rod end (-B) for secure load coupling. End-of-stroke deceleration is handled by a fixed NBR bumper at each end rather than an adjustable air cushion. Operating speed ranges from 30-500 mm/s across its 5 mm stroke.
| Model | AirTAC SDA20X5SBH Compact Cylinder | 20mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø20 mm |
| Stroke | 5 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. |
| ×5 | 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).
Executes a rapid 5 mm micro-shear on printed circuit board routing lines, utilizing the 157.1 N push force to cleanly sever frangible material without stressing adjacent components.
Tracks web position on vertical packaging machinery using the integrated magnet and an electronic switch to verify material splices at high cycling speeds.
Taps a precision metering valve in a chemical analyzer, where the FKM seals withstand aggressive solvent vapors and the short 5 mm stroke provides exact dosing control.
When sizing this 20 mm bore actuator, evaluate your force margins 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. Based on the 157.1 N push figure, the safe working load is approximately 94 N (about 60 percent capacity), translating to a vertical lift capability of roughly 8 kg with a 2:1 safety margin. To finalize your order, confirm the 20 mm bore, 5 mm stroke, M5x0.8 port, male M6 rod thread, FKM seals, and the required magnetic sensor. Remember that a plain compact cylinder drifts if air pressure drops or the valve is centered; the fixed bumper only decelerates the stroke end and does not function as a lock. To hold a load securely without live pressure, you must integrate an external rod lock or a pilot-operated check valve.
Quick checklist
This 20 mm bore double-acting cylinder generates 157.1 N push and 131.9 N pull at 0.5 MPa, increasing to 219.9 N push and 184.7 N pull 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 proof pressure of 1.5 MPa, and supports a speed range of 30-500 mm/s.
It relies on a fixed NBR bumper at each end to decelerate the piston; it is not an adjustable air cushion, so you should slow the approach or add an external shock absorber for high-energy loads. Position detection requires an AirTAC reed or electronic switch fitted into the body grooves, which works in conjunction with the built-in piston magnet.
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