
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32AX50-20 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 SAIJ32X50-20 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that trims the 50mm nominal stroke back by up to 20mm, yielding a highly flexible 30-50mm usable travel window. It delivers 402N of push force and 345N of pull force at 0.5MPa, making it well-suited for compact actuation tasks. The extruded aluminum barrel includes sensor grooves on both sides for straightforward position feedback.
This variant uses a SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance compared to standard carbon steel. It features PT tapered port threads and omits a magnet, meaning electronic position sensing is not supported out of the box. The rear adjuster acts purely as a travel stop to dial in the exact end position during commissioning, but it is not a lock and cannot hold a load without live air pressure.
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32AX50-20 |
|---|---|
| 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.
Dial in the exact 30-50mm travel distance on packaging lines switching between product sizes, using the rear stopper to fine-tune the retract position without changing hardware.
Perfectly set the final retract stop during initial commissioning to account for mechanical tolerances, ensuring precise placement without adding external bumpers.
Leverage the 32mm bore and short adjustable stroke for lightweight pressing or indexing tasks in confined spaces where a fixed-stroke SAI cylinder might overshoot or require shimming.
Select this 32mm bore cylinder when an application requires precise end-position tuning during machine setup or product changeover, avoiding the need to physically swap cylinders or bolt on external stops. If your process demands greater thrust, stepping up to the 40mm bore yields 628N of push force at 0.5MPa, whereas dropping to a smaller bore is not standard for this ISO series. Because this is an adjustable-stroke profile cylinder, it uses a specific mounting subset: Basic, FA, LB, TC, FTC, TCM1, and TCM2, intentionally omitting FB, CA, CB, and CR mounts. For dimensionally interchangeable ISO 15552 replacements, match the 50mm stroke, 20mm adjustment range, PT G1/8 port, and the lack of a magnet (-S).
Quick checklist
At 0.5MPa operating pressure, this 32mm bore cylinder provides 402N of push force and 345N of pull force. At the maximum 1.0MPa pressure, it can deliver up to 82kgf.
The rear adjuster screw acts as a mechanical stop that shortens the 50mm nominal stroke by up to 20mm, creating a 30-50mm usable travel window. It allows you to fine-tune the retract end position at commissioning, but it is a stop, not a lock, and will not hold the load without live air pressure.
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