
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32BX950-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø32mm bore and 950mm 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 SAIJ32X950-20-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a usable travel window of 930 to 950 mm, enabling precise end-position tuning without external stops. Equipped with a SUS304 stainless steel rod and a PT tapered port, it delivers 402 N of push force at 0.5 MPa.
This model includes a magnet for CMSE reed and DMSE electronic sensors. The extruded aluminum barrel integrates sensor grooves on both sides. Because the 950 mm stroke is long, the 12 mm rod requires an external guide to prevent excessive side-loading and deflection.
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32BX950-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø32 mm |
| Stroke | 950 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. |
| ×950 | 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 930-950 mm travel window during product line changeovers to accommodate varying part sizes without physically replacing the cylinder.
Precisely tune the end stop on a long-stroke material transfer conveyor, using the rear screw to correct for minor mechanical drift over time.
Fine-tune the retract stroke at an assembly station during commissioning, ensuring perfect alignment before the SUS304 rod engages the tooling.
Choose this 32 mm bore when you need 402 N push force at 0.5 MPa with built-in stroke flexibility. If your application requires higher thrust, stepping up to the 40 mm bore yields 628 N. The 20 mm rear adjuster allows you to fine-tune the retract position during commissioning or product changeover, which is far more efficient than swapping a fixed-stroke SAI cylinder.
For ISO 15552 mounting-interface replacements, match the 32 mm bore, 950 mm stroke, 20 mm adjustment, PT port, and -S magnet. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. Remember that the rear adjuster is a travel stop, not a lock; it will not hold a load without live air. For load-holding, consider SAIL or BSAI cylinders.
Quick checklist
The rear adjuster acts as a mechanical stop that lets you shorten the effective stroke by up to 20 mm. This creates a usable travel window of 930 to 950 mm, allowing precise end-position tuning without changing the cylinder. It is a travel stop, not a lock, so it cannot hold a load without live air pressure.
At a 0.5 MPa operating pressure, the SAIJ32X950-20-S provides 402 N of push force and 345 N of pull force. At the maximum 1.0 MPa pressure, it delivers up to 82 kgf. The 12 mm SUS304 stainless steel rod handles the thrust while offering corrosion resistance.
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