Airtac SAIJ100 Adjustable Cylinder SAIJ100X900-50S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X900-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 900mm 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
- Stroke900 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100X900-50S
The AirTAC SAIJ100X900-50-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a robust 3927N push force at 0.5 MPa and features a 50mm adjustment range, creating a precise 850-900mm usable travel window for exact end-position tuning. The extruded aluminum barrel includes sensor grooves on both sides, and this -S variant includes a magnet for compatibility with AirTAC CMSE reed and DMSE electronic solid-state switches.
This model uses a 25mm carbon steel rod with an M20x1.5 thread, paired with a G1/2 PT port. The rear adjuster acts purely as a mechanical stop to fine-tune the retract position during commissioning or product changeover without swapping the cylinder. It is important to note that this adjuster is not a lock; the SAIJ100X900-50-S cannot hold a load without live air pressure, requiring an external rod lock or a SAIL cylinder for fail-safe load holding.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X900-50S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X900-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 900 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 SAIJ100X900-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×900 | 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 SAIJ100X900-50S Is Used
Variable End-Stop Machining
Dial in the retract position within the 850-900mm window during machine setup to accommodate varying part lengths without physically swapping cylinders.
Product Changeover Diverters
Quickly fine-tune the stroke end-stop on a packaging line when transitioning to different box sizes, ensuring precise diverting without external stopper blocks.
Long-Stroke Assembly Presses
Utilize the 3927N push force for pressing operations, using the 50mm adjustment range to set precise bottoming positions for various assembly heights.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X900-50S the Right Cylinder?
Selecting this 100mm bore adjustable cylinder makes sense when your application requires 3927N of push force at 0.5 MPa but needs on-the-fly end-stop tuning within an 850-900mm window. If your force requirements are lower, stepping down to a 63mm bore yields 1559N, while stepping up to a 125mm bore provides 6136N. Because the 900mm stroke is substantial, the 25mm rod and M20x1.5 thread handle high stresses, but an external guide is strongly recommended to prevent side-load damage over this long unsupported travel.
Choose this adjustable SAIJ over a fixed-stroke SAI when you need to dial in the exact retract position during machine setup or product size changeovers. To replace an ISO 15552 cylinder, match the 100mm bore, 900mm stroke, 50mm adjust, G1/2 port, and -S magnet. 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 SAIJ100X900-50S FAQ
At a 0.5 MPa operating pressure, this 100mm bore cylinder generates 3927N of push force and 3681N of pull force. At 0.9 MPa, the push force increases to 7068N.
The rear adjuster screw lets you shorten the 900mm nominal stroke by up to 50mm, providing a usable travel window of 850-900mm. This mechanical stop fine-tunes the end position but does not lock the load without live air pressure.
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