Airtac SAIJ50 Adjustable Cylinder SAIJ50AX290-100S
The AirTAC Airtac SAIJ50 Adjustable Cylinder SAIJ50AX290-100S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 290mm 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.
- BoreØ50 mm
- Stroke290 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- CushionAdjustable, 30 mm
About the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX290-100S
The AirTAC SAIJ50X290-100-S is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to trim the effective travel back by up to 100 mm. This creates a highly versatile 190-290 mm usable stroke window, letting you fine-tune end positions at commissioning without swapping out the cylinder or adding external stops. Driven by a G1/4 port, it delivers a robust 982 N push force at 0.5 MPa, making it well-suited for moderate-duty positioning tasks.
This variant features an SUS420J2 stainless steel rod for superior corrosion resistance and includes a built-in magnet (-S) for position sensing. The sensor groove on both sides of the extruded aluminum barrel accommodates AirTAC CMSE reed and DMSE electronic solid-state switches. Remember that the rear adjuster acts purely as a travel stop to set deceleration limits; it does not lock the load or hold position without live air pressure.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX290-100S Technical Specifications
| Model | Airtac SAIJ50 Adjustable Cylinder SAIJ50AX290-100S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 290 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.
Theoretical Output Force (Ø50mm)
| 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.
Model Code: Airtac SAIJ50 Adjustable Cylinder SAIJ50AX290-100S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×290 | 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.
Where the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX290-100S Is Used
Product Changeovers
Dial in the 190-290 mm travel window during format changes on packaging lines without physically replacing the actuator.
End-Stop Calibration
Fine-tune the retract end position during machine commissioning to perfect picking or pressing depths on the fly.
Variable Diverter Arms
Adjust the stroke length on sorting conveyors to handle varying package dimensions without mechanical rebuilds.
Is the Airtac SAIJ50 Adjustable Cylinder SAIJ50AX290-100S the Right Cylinder?
Selecting this 50 mm bore over the smaller 40 mm bore yields a significant thrust increase from 628 N to 982 N at 0.5 MPa, whereas stepping up to the 63 mm bore provides 1559 N for heavier payloads. The 100 mm adjustment range is ideal for machinery requiring frequent product-size changeovers, providing a variable end-stop that a fixed-stroke SAI cylinder cannot match. For load-holding without continuous air pressure, this cylinder is insufficient; you should specify an SAIL pneumatic lock, a BSAI clamp-lock, or an external pilot-operated check valve.
When replacing an ISO 15552 cylinder, match the 50 mm bore, 290 mm stroke, PT tapered port threads, and the -S magnet requirement. Because the nominal stroke is 290 mm, the M16x1.5 rod and standard air cushions may still experience side-loading if the load is unsupported; always guide long strokes externally to prevent premature seal wear. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for sensors?
- ✓ Side load — consider a guided cylinder
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Adjust end cushion screws for smooth stops.
- check Use correct mounting accessory (FA/FB/CA/CB/LB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac SAIJ50 Adjustable Cylinder SAIJ50AX290-100S FAQ
At 0.5 MPa operating pressure, this 50 mm bore cylinder provides 982 N of push force and 825 N of pull force. At 0.7 MPa, the push force increases to 1374 N.
The rear adjuster screw allows you to shorten the 290 mm nominal stroke by up to 100 mm, creating a usable travel window of 190 to 290 mm. This adjuster functions as a mechanical stop and does not lock the load without live air pressure.
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