The AirTAC Airtac SAI ISO Cylinders SAI50X160SG is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 160mm stroke, G1/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
The SAI50X160SG is a double-acting ISO 15552 profile cylinder with G1/4 BSPP parallel ports and a built-in magnet, delivering 982 N of push force at 0.5 MPa and up to 200 kgf theoretical at 1.0 MPa. Its 160 mm stroke fits compact pick-and-place modules, small clamp fixtures and short-feed stations where a 50 mm bore covers mid-range thrust. The trailing G in the SKU matters: instead of the standard PT (Rc) tapered ports, this version is supplied with G1/4 parallel ports that seal on a bonded face washer - a made-to-order thread often requested by EU and Asian OEM lines built around metric fittings. Because it is magnetized (-S), reed or Hall-effect switches from the CMSE / DMSE families snap into the sensor groove on either side of the extruded aluminum barrel, so end-of-stroke detection needs no external brackets. The carbon steel rod can be upgraded to SUS420J2 (suffix A) or SUS304 (suffix B) for washdown or corrosive duty, and TPU seals can be swapped for Viton (H) if the line runs hot.
| Model | Airtac SAI ISO Cylinders SAI50X160SG |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 160 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M16×1.5 |
| 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 – 800 mm/s |
| Cushion | Adjustable, 30 mm |
| Max stroke | Up to 1200 mm |
Specifications follow the official AirTAC SAI series datasheet and ISO 15552 dimensions. Confirm against the product label before installation. Port options: G (BSPP) / NPT.
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×160 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related SAI-family variants: SAID (double rod), SAIJ (adjustable stroke), SAIL (with lock), SAIF (with valve), BSAI (enclasp / clamp-lock), and SAI-S with built-in magnet. Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B); seals: TPU (blank) / Viton H / NBR N.
A 160 mm stroke matches the flap-fold motion on a case packer, and 982 N at 0.5 MPa creases cardboard flaps without crushing them; the magnet lets a CMSE switch confirm each fold cycle.
Electronics and harness benches use this bore class to stake terminals or clamp housings - 200 kgf theoretical force at 1.0 MPa is enough for light staking, and the G1/4 BSPP ports bolt straight onto metric manifold plates.
A sheet-metal shop can drive a short ejector or stripper with this cylinder's 825 N pull force at 0.5 MPa, keeping finished parts from hanging on the die between hits.
Size around your load with margin: step down to the 40 mm bore if you need under 628 N at 0.5 MPa, or step up to the 63 mm bore (1559 N push at 0.5 MPa) if side thrust or friction pushes past the 982 N this 50 mm barrel offers. At 160 mm stroke the 20 mm rod is comfortably within its column limits, but add an external guide if the tooling sees side load. Note that a plain SAI cannot park a load when pressure drops or the valve centres - the rod will drift - so specify the SAIL lock version or an external rod lock if your fixture must hold without live air. For ISO 15552 replacement, match four things: 50 mm bore, 160 mm stroke, port style and mounting. This SG variant answers the port question with G1/4 BSPP - choose it over the PT version when your manifold and fittings are parallel-threaded with bonded washers; if your plumbing is North American NPT, order the T variant instead. Pick the mounting accessory (LB, FA/FB, CA/CB or TC) to clone the original footprint dimensions.
Quick checklist
At 0.5 MPa it pushes with 982 N and pulls with 825 N; at 0.7 MPa push force rises to 1374 N, and at 0.9 MPa it reaches 1767 N. The theoretical ceiling at 1.0 MPa is 200 kgf, so stay under roughly 50-70% of that for smooth, long-life operation on real loads.
The mounting interface is identical ISO 15552 in both cases, but the SG variant has G1/4 BSPP parallel ports instead of the standard PT (Rc) tapered ones. G ports seal on a bonded washer or O-ring face and suit EU/Asia metric plumbing, while PT tapers seal on the thread. Match the port to your existing fittings and manifold before ordering, and confirm bore (50 mm), stroke (160 mm), mounting accessory and -S magnet to drop straight into the old footprint.
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