
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50BX230-100 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 SAIJ50X230-100 is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers a 0.5 MPa push force of 982N and features a 230mm nominal stroke that can be fine-tuned down by up to 100mm, creating a usable travel window of 130-230mm. This built-in adjustability allows precise end-position tuning during commissioning without swapping hardware.
Built for demanding environments, this variant incorporates a SUS304 stainless steel rod for superior corrosion resistance. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch placement, and the PT tapered port threads ensure a reliable pneumatic seal. The rear screw functions strictly as a travel stop to set the deceleration point, not as a lock to hold the load without live air pressure.
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50BX230-100 |
|---|---|
| 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.
Dial in the 130-230mm travel window on the fly to accommodate different product lengths without changing the cylinder.
Use the rear stopper to precisely set the end-of-stroke position during machine setup, avoiding mechanical hard stops.
Leverage the SUS304 stainless steel rod for reliable end-stop positioning in environments requiring high rust resistance.
Choose this 50mm bore when an application requires moderate thrust combined with significant travel flexibility. If you need less force, stepping down to a 40mm bore yields 628N at 0.5MPa, while moving up to a 63mm bore provides 1559N for heavier loads. The adjustable stroke is ideal for product-size changeovers on a line, providing a variable end-stop that a fixed-stroke SAI cylinder cannot offer. Because the nominal stroke is 230mm, ensure external guiding to prevent excessive side loading on the rod. To match this ISO 15552 replacement exactly, specify the 50mm bore, 230mm stroke, 100mm adjustment, PT port, and no magnet. For load-holding without air pressure, select a SAIL or BSAI cylinder instead.
Quick checklist
At 0.5 MPa, it provides a push force of 982N and a pull force of 825N. The 230mm stroke can be adjusted back by up to 100mm, resulting in a usable travel window of 130-230mm.
The rear screw acts as a mechanical stop to shorten the effective stroke, but it does not lock or hold the load without continuous air pressure. For load-holding, an external rod lock or a SAIL cylinder is required.
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