The AirTAC Airtac SAI ISO Cylinders SAI32X50SG is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø32mm bore and 50mm 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 AirTAC SAI32X50SG is a double-acting ISO 15552 profile cylinder with G1/8 BSPP parallel ports - the made-to-order thread variant of the standard PT model, sealing on a bonded washer for EU and Asian OEM manifold plumbing. Its 32 mm bore develops about 402 N at 0.5 MPa and 563 N at 0.7 MPa, and the short 50 mm stroke suits quick, repetitive moves such as ejection, flipping and small-part clamping. The extruded aluminum barrel carries sensor switch grooves on both sides, and the fitted magnet (-S) lets CMSE or DMSE switches report end positions without extra brackets. The 12 mm rod can be specified in carbon steel, hardenable SUS420J2 or corrosion-resistant SUS304, so a washdown line does not force you into a larger bore. Standard TPU seals handle typical plant air; choose Viton (H) for hotter circuits or NBR (N) where media demands it. Adjustable cushions of 27 mm at each end tame the piston across the full 30-800 mm/s speed range.
| Model | Airtac SAI ISO Cylinders SAI32X50SG |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø32 mm |
| Stroke | 50 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. |
| ×50 | 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.
402 N at 0.5 MPa is ample to strip bottle caps or connector bodies from shallow mold pockets, and the 50 mm stroke matches typical ejector travel on compact tooling.
Mounted beside a belt, the cylinder flips off-spec cartons or blisters; 563 N at 0.7 MPa plus 30-800 mm/s speed lets the paddle react within one product pitch.
Clamps thin brackets or terminal blocks during drilling and tapping; the fitted magnet with CMSE/DMSE switches in the dual barrel grooves confirms clamp state to the PLC before the spindle starts.
At the bottom of the SAI range there is no smaller bore; if 402 N at 0.5 MPa leaves too little margin after friction and cushion losses, step up to the 40 mm bore with its 628 N at 0.5 MPa. The 50 mm stroke is well inside the 1000 mm standard limit and short enough that no external guiding is normally needed, though a cantilevered tool should still keep side load off the 12 mm rod. Remember that a plain SAI cannot hold position without live air pressure - the piston will drift if the valve centres or pressure drops, so pick the SAIL lock or BSAI clamp-lock variant where the load must stay put unpowered. Replacing another make is straightforward because the mounting interface is dimensionally interchangeable per ISO 15552: match bore 32, stroke 50 and the mounting accessory (LB foot, FA/FB flange, CA/CB clevis or TC trunnion). Because this is the G version, verify your fittings and manifold accept a parallel G1/8 BSPP thread sealed on a bonded washer before ordering, instead of the tapered PT default. The magnet is already built in.
Quick checklist
At 0.5 MPa it pushes 402 N and pulls 345 N; push rises to 563 N at 0.7 MPa and 724 N at 0.9 MPa. The theoretical ceiling is 82 kgf at 1.0 MPa. Deduct a margin for seal friction and cushioning when sizing your load against these figures.
Yes - its mounting interface follows ISO 15552, so a like-for-like swap of another 32 mm ISO 15552 cylinder works once bore, stroke and accessory match. The G suffix sets the port style: G1/8 BSPP is a parallel thread that seals on a bonded washer face, unlike tapered PT, and it is a made-to-order choice common on EU and Asian OEM manifolds. Match the thread to your existing fittings, then confirm the -S magnet covers your sensor needs.
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