The AirTAC AirTAC SDA20X120SB Compact Cylinder | 20mm Bore is a genuine double-acting COMPACT (thin) air cylinder with a Ø20mm bore and 120mm 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 SDA20X120SB is a double-acting, single-rod compact cylinder engineered for tight machinery footprints. Its riveted assembly minimizes axial mounting depth while delivering 157.1 N of push force and 131.9 N of pull force at 0.5 MPa. Equipped with a built-in piston magnet, it supports position sensing via an AirTAC reed or electronic switch fitted into the body grooves.
This specific configuration includes a male M6x1.0 threaded piston rod for direct load coupling and operates at speeds between 30 and 500 mm/s. Because the 120 mm stroke exceeds the 100 mm standard maximum for this 20 mm bore, it is manufactured as a non-standard, made-to-order unit. End-of-travel deceleration relies on a fixed NBR bumper rather than an adjustable air cushion, meaning high-energy cycles may require an external shock absorber.
| Model | AirTAC SDA20X120SB Compact Cylinder | 20mm Bore |
|---|---|
| Series | SDA compact (thin) cylinder |
| Bore size | Ø20 mm |
| Stroke | 120 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. |
| ×120 | 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).
Actuates a routing flap on a packaging conveyor, utilizing the 120 mm travel to redirect small cartons into secondary processing lanes.
Pushes tested specimen vials out of a centrifuge carousel, where the compact body saves valuable space within the analytical instrument chassis.
Separates populated circuit boards from a testing fixture, using the male M6 thread to secure a customized non-marring contact pad.
When sizing this actuator, compare its 157.1 N push at 0.5 MPa against adjacent bores: stepping down to the SDA16 yields 100.5 N, while moving up to the SDA25 provides 245.4 N. Based on the 0.5 MPa figure, the safe working load is approximately 94 N (60% capacity), translating to a vertical lift capability of about 8 kg with a 2:1 safety margin. To finalize your order, confirm the 20 mm bore, 120 mm non-standard stroke, M5x0.8 port, male M6x1.0 rod thread, and the required magnetic sensor. Note that a standard cylinder drifts when air pressure is lost; if your application demands strict position holding without live pressure, you must integrate an external rod lock or pilot-operated check valve.
Quick checklist
At 0.5 MPa, this 20 mm bore cylinder provides 157.1 N push and 131.9 N pull. At 0.7 MPa, it provides 219.9 N push and 184.7 N pull. The theoretical maximum push force is 32 kgf at 1.0 MPa, with an operating pressure range of 0.15-1.0 MPa.
It uses a fixed NBR bumper at each end to decelerate the piston near the stroke limits; this is not an adjustable air cushion. Additionally, it does not hold its load if air is lost or the valve is centered, so an external rod lock or pilot-operated check valve is required for fail-safe load holding.
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