The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX190-100 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 190mm 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 SAIJ50X190-100 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to trim the nominal 190 mm travel back by up to 100 mm. This creates a wide 90-190 mm usable window, enabling highly flexible end-position tuning during commissioning. Delivering 982 N of push force at 0.5 MPa, it fits mid-range pneumatic tasks perfectly.
This model uses a SUS420J2 stainless steel rod (option A) for enhanced corrosion resistance compared to standard carbon steel. The extruded aluminum barrel includes sensor grooves on both sides, and the rear PT tapered porting matches the standard G1/4 interface. The rear adjuster acts purely as a mechanical stop for deceleration and does not hold the load without live air pressure.
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX190-100 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 190 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. |
| ×190 | 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 90-190 mm travel window on the fly to accommodate different package lengths on a packaging line.
Fine-tune the retract end-position during commissioning without machining new external stopper blocks.
Use the 100 mm adjustment range to test multiple extended positions for a probing or clamping station.
Choose this 50 mm bore when you need more force than a 40 mm bore (628 N push at 0.5 MPa) but want a smaller footprint than a 63 mm bore (1559 N). The 100 mm adjustment range is ideal for machines handling frequent product-size changeovers, allowing you to set variable end-stops without swapping the cylinder or adding external stops. For fixed travel without adjustment, the standard SAI cylinder is the alternative.
When replacing an ISO 15552 cylinder, match the 50 mm bore, 190 mm stroke, PT port threads, and the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2). Note that this plain SAIJ version lacks a magnet for sensors; adding an -S version enables CMSE reed and DMSE electronic switches.
Quick checklist
At 0.5 MPa it provides 982 N of push force and 825 N of pull force. At the maximum operating pressure of 1.0 MPa, it delivers up to 200 kgf.
The rear adjuster screw lets you shorten the 190 mm nominal stroke by up to 100 mm, creating a 90-190 mm travel window. It acts as a mechanical stop and does not lock or hold the load without live air pressure.
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