Airtac SAIJ100 Adjustable Cylinder SAIJ100X290-50S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X290-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 290mm stroke, G1/2 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ100 mm
- Stroke290 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100X290-50S
The AirTAC SAIJ100X290-50-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the nominal 290 mm stroke by up to 50 mm. This creates a precise 240-290 mm usable travel window, allowing exact end-position tuning at commissioning without physically swapping the cylinder or adding external stops. The extruded aluminum barrel features dual sensor grooves, and this -S variant includes a magnet for CMSE reed or DMSE electronic solid-state switches.
Delivering substantial thrust, this 100 mm bore unit generates 5497 N of push force at 0.7 MPa and 7068 N at 0.9 MPa. It uses a 25 mm carbon steel rod with an M20x1.5 thread, providing robust resistance to side loads, though long 290 mm strokes still require an external guide. The rear adjuster acts purely as a travel stop and deceleration boundary, meaning it will not hold the load safely without live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X290-50S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X290-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 290 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M20×1.5 |
| 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, 36 mm |
| Max stroke | Up to 1500 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 (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa | 5498 N | — |
| Max (@1.0 MPa) | 801 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ100 Adjustable Cylinder SAIJ100X290-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | 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 SAIJ100 Adjustable Cylinder SAIJ100X290-50S Is Used
Product Changeover
Quickly reconfigure the retract end-stop for different product lengths on a packaging line using the 50 mm adjustment window instead of swapping physical spacers.
Press Fit Tuning
Dial in the exact 240-290 mm travel depth during assembly commissioning to achieve precise insertion forces without replacing the entire actuator.
Heavy Material Handling
Leverage the 7068 N push force at 0.9 MPa to move heavy pallets or chassis, using the adjustable stop to compensate for mechanical wear over time.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X290-50S the Right Cylinder?
Choose this 100 mm bore when an application requires heavy thrust that a smaller bore cannot provide—stepping down to an 80 mm bore drops the 0.5 MPa push force to 2513 N, whereas this model provides 3927 N at the same pressure. The 50 mm adjustment range is ideal for machinery requiring frequent product-size changeovers, as operators can fine-tune the retract end-stop on the fly instead of installing fixed spacers. For load-holding requirements without live air, this cylinder is insufficient since the adjuster is not a lock; consider the SAIL or BSAI series instead.
When matching this ISO 15552 cylinder for a direct replacement, verify the 100 mm bore, 290 mm stroke, 50 mm adjustment range, PT tapered port thread, and the -S magnet option. Because the stroke is 290 mm, ensure your mounting setup includes an external guide to handle side loads over the extended travel. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, intentionally 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 SAIJ100 Adjustable Cylinder SAIJ100X290-50S FAQ
At 0.7 MPa, it provides 5497 N of push force and 3681 N of pull force. At the maximum operating pressure of 0.9 MPa, the push force increases to 7068 N.
The rear adjuster screw allows you to shorten the 290 mm nominal stroke by up to 50 mm, creating a usable travel window of 240-290 mm. The adjuster acts as a mechanical stop and does not lock the position without live air pressure.
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