The AirTAC Airtac SAI ISO Cylinders SAI32X150SG is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø32mm bore and 150mm stroke, G1/8 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 SAI32X150SG is a double-acting AirTAC SAI profile cylinder built to the ISO 15552 (formerly ISO 6431 / VDMA 24562) mounting standard, fitted with G1/8 BSPP ports and a built-in piston magnet. The 32 mm bore delivers roughly 402 N of push force at 0.5 MPa, and the 150 mm stroke is a good fit for short, repeatable push-and-return moves where the magnet lets a CMSE or DMSE reed sensor confirm end-of-stroke position in the extruded barrel's switch grooves, which run along both sides. The G in the model code is what sets this SKU apart: its 1/8 in ports are G-thread (BSPP), a parallel thread that seals on a bonded face washer or O-ring rather than on the thread flanks like a tapered PT or NPT port. That makes this G version the natural match for European and Asian OEM manifolds and imperial-market buyers who order it as a made-to-order alternative to the standard PT unit. Rod options span plain carbon steel, SUS420J2 stainless, and SUS304, so washdown or corrosion-prone installations can be specified without changing the footprint.
| Model | Airtac SAI ISO Cylinders SAI32X150SG |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø32 mm |
| Stroke | 150 mm |
| Acting type | Double acting |
| Port size | G1/8 |
| Rod thread | M10×1.25 |
| 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, 27 mm |
| Max stroke | Up to 1000 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 | 402 N | 346 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 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. |
|---|---|
| 32 | Bore size in mm. |
| ×150 | 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.
Ejecting finished ABS bottle caps or small closures out of an injection mold tool. The 32 mm bore's 402 N push at 0.5 MPa is ample for lightweight parts, and the 150 mm stroke clears deep cavities while the -S magnet signals eject-complete to the machine PLC.
Diverting cartons of tea boxes or blister packs off a 300 mm wide conveyor into a lane. The ~563 N available at 0.7 MPa snaps the pusher across in under a second within the bore's 30-800 mm/s rating, and dual sensor grooves accept CMSE switches at both ends.
Clamping an aluminum window profile against a backstop during edge deburring. With a SUS420J2 or SUS304 rod option for coolants, the cylinder's 345 N pull force at 0.5 MPa holds the extrusion while cutting chips fly.
At 32 mm this is the smallest SAI bore, so there is no step down; if 402 N at 0.5 MPa feels marginal for your load, move up to the 40 mm bore, which pushes 628 N at the same pressure, roughly a 56% jump for one size. Keep the rod in compression where possible and avoid side loading on the 12 mm rod - this compact bore has little bearing length to spare. Remember the air cushion only slows the piston near each end; the moment supply air is lost the rod will drift under load, so add a SAIL (lock) or BSAI (clamp-lock) variant or an external rod lock if the application must stay put unpressurized. To cross-replace an existing ISO 15552 cylinder, match four things: the 32 mm bore, the 150 mm stroke, the port thread (order this SG version only if your fittings and manifold are G/BSPP with bonded washers - tapered PT pipework will not seal correctly on a parallel port), and the mounting accessory (LB foot, FA/FB flange, CA/CB/CR clevis, TC/FTC trunnion). Keep the -S magnet in the code or your switch sensing disappears.
Quick checklist
At 0.5 MPa the 32 mm bore pushes 402 N and pulls 345 N. At 0.7 MPa push force rises to 563 N, and at 0.9 MPa it reaches 724 N. The theoretical maximum is 82 kgf at 1.0 MPa. Always size the load at no more than about half the available force to leave margin for friction and acceleration.
Yes, dimensionally: the SAI follows the ISO 15552 mounting interface, so bore, stroke, mounting-hole pattern and accessories line up with other ISO 15552 profile cylinders. The one detail to check is plumbing - this SG model has G1/8 BSPP parallel ports that seal on a bonded washer, not tapered PT threads, so it suits G-standard fittings and EU/Asia-style manifolds. Also confirm you need the -S magnet for your position switches.
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