The AirTAC AirTAC SDA20X20SH 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 SDA20X20SH is a double-acting, single-rod compact cylinder engineered with a 20 mm bore and 20 mm stroke. It generates 157.1 N of push force and 131.9 N of pull force at 0.5 MPa. The short riveted body design significantly reduces axial mounting depth, making it highly effective for machinery where a standard round-body unit would simply not fit. This specific configuration includes an -H fluororubber (FKM) seal variant for enhanced thermal and oil resistance.
Equipped with a built-in piston magnet (-S), the body features integrated grooves designed to accept AirTAC reed or electronic switches for precise position detection. The hard-anodized bore houses a two-way piston seal, while end-of-stroke deceleration is handled by a fixed NBR bumper rather than an adjustable air cushion. Operating at speeds between 30-500 mm/s, it utilizes an M5x0.8 port and an 8 mm rod to deliver consistent linear motion.
| Model | AirTAC SDA20X20SH 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).
Actuates a routing blade to singulate printed circuit boards, utilizing the 157.1 N push force and FKM seals to withstand localized frictional heat.
Drives a small heated platen for blister pack sealing where the 20 mm stroke and compact riveted body minimize axial machine footprint.
Toggles a precision fluid dispensing valve in analytical equipment, relying on the magnetic piston for immediate reed or electronic switch feedback.
When sizing this unit, consider stepping down to the SDA16, which yields 100.5 N of push at 0.5 MPa, or moving up to the SDA25, which provides 245.4 N at the same pressure. For the SDA20X20SH specifically, the safe working load is approximately 94 N (about 60% of the 157.1 N figure), allowing for a vertical lift of roughly 8 kg with a 2:1 safety margin. Be aware that a standard compact cylinder will drift and cannot hold a load if air pressure is lost or the valve is centered; the fixed bumper only decelerates the piston near stroke end and does not function as a locking brake. For applications requiring position holding without live pressure, an external rod lock or pilot-operated check valve is required. Confirm your ordering essentials: 20 mm bore, 20 mm stroke, M5x0.8 port, female M4x0.7 rod thread, -S magnet, and -H FKM seals.
Quick checklist
This double-acting cylinder delivers a push force of 157.1 N and a pull force of 131.9 N at 0.5 MPa. At 0.7 MPa, the push force is 219.9 N. The theoretical maximum push force is 32 kgf at 1.0 MPa. It operates within a pressure range of 0.15-1.0 MPa, handles speeds of 30-500 mm/s, and has a maximum standard stroke limit of 100 mm.
No, the SDA20X20SH uses a fixed NBR bumper at each end to decelerate the piston near the stroke limits; it is not an adjustable air cushion. For high-speed or high-energy cycles, you should either slow the approach speed or install an external shock absorber to prevent damage.
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