
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX230-75S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 230mm 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 AirTAC SAIJ50X230-75-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers 982N of push force at 0.5 MPa and features a generous 75mm adjustment range, creating a usable travel window between 155mm and 230mm. This wide trim capacity is ideal for machines processing multiple product sizes, allowing operators to dial in the exact retract end-position during commissioning without swapping hardware.
This SKU is built with an SUS420J2 stainless steel rod (option A) for improved corrosion resistance and includes a magnet (-S) for position sensing. The extruded aluminum barrel houses sensor grooves on both sides, ready to accept AirTAC CMSE reed or DMSE electronic solid-state switches. Fluid is filtered air, operating pressure spans 0.15 to 1.0 MPa, and the G1/4 PT tapered ports feed variable air cushions at both ends to absorb kinetic energy.
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX230-75S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 230 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. |
| ×230 | 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.
Quickly reconfigure the retract distance from 155 to 230mm when switching a packaging line to accommodate different carton depths.
Fine-tune the end-of-stroke position during commissioning using the rear stopper instead of machining custom spacers.
Provide a flexible datum point for assembly presses that need to adapt to multiple part heights on the same fixture.
Select this 50mm bore when an application requires moderate thrust but highly variable end-stops; if you need less force, stepping down to a 40mm bore yields 628N push at 0.5 MPa, while a 63mm bore provides 1559N for heavier loads. Choose the SAIJ adjustable format over a fixed-stroke SAI cylinder when you anticipate frequent product changeovers or need to fine-tune the retract distance on the fly. To match this exact replacement, specify: 50mm bore, 230mm stroke, 75mm adjustment, PT G1/4 port, Basic/FA/LB/TC/FTC/TCM1/TCM2 mounting, and the -S magnet. Since the nominal stroke is 230mm, ensure adequate external guiding to prevent excessive side-loading on the rod.
Remember that the rear adjuster acts purely as a mechanical stop to set the travel end and does not hold the load without live air pressure. For applications requiring true position holding in the event of air loss, consider an AirTAC SAIL pneumatic lock, a BSAI clamp-lock cylinder, or an external rod lock.
Quick checklist
The rear adjuster screw allows you to mechanically shorten the effective stroke by up to 75mm. This creates a usable travel window of 155 to 230mm, letting you set the exact retract position without adding external stops.
At 0.5 MPa, it provides 982N of push force and 825N of pull force. At the maximum operating pressure of 1.0 MPa, the push force reaches 1964N.
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