Airtac SAIJ100 Adjustable Cylinder SAIJ100X250-100S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X250-100S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 250mm 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
- Stroke250 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100X250-100S
The AirTAC SAIJ100X250-100-S is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear stroke adjuster. It delivers 3927N of push force at 0.5 MPa and provides a usable travel window of 150-250mm, letting you dial back the nominal 250mm stroke by up to 100mm. The -S option equips the piston with a magnet for direct compatibility with AirTAC CMSE reed and DMSE electronic solid-state sensors, which seat neatly into the dual-side sensor grooves on the extruded aluminum barrel.
This model uses a carbon steel rod with an M20x1.5 thread and a PT tapered port thread. The rear adjuster acts purely as a mechanical stop to fine-tune end positions during commissioning or product changeovers without adding external stops. It supports a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2, deliberately omitting FB, CA, CB, and CR configurations.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X250-100S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X250-100S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 250 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 SAIJ100X250-100S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×250 | 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 SAIJ100X250-100S Is Used
Variable End-Stop Tuning
Dial in exact retraction distances from 150mm to 250mm during machine setup, eliminating the need for custom spacers or multiple cylinder inventories.
Product Changeover Lines
Quickly adapt actuation endpoints on packaging or filling equipment when switching to different container sizes, keeping downtime to a minimum.
Sensor-Ready Positioning
Leverage the integrated magnet with DMSE electronic sensors to confirm exact intermediate positions within the 100mm adjustment window.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X250-100S the Right Cylinder?
Choose this 100mm bore cylinder when a 50mm bore yields insufficient force (982N push at 0.5 MPa) or an 80mm bore falls short (2513N push). The 100mm bore provides 3927N at 0.5 MPa, scaling to 7068N at 0.9 MPa. An adjustable stroke is essential for lines requiring frequent product-size changeovers, allowing variable end-stops without swapping the cylinder. For load-holding without live air pressure, note that this rear adjuster is a travel stop, not a lock; you would instead need an SAIL, BSAI, or an external pilot-operated check valve.
To replace an ISO 15552 cylinder, match the 100mm bore, 250mm nominal stroke, 100mm adjustment range, PT port thread, and the -S magnet option. With a 250mm stroke, the M20x1.5 rod handles substantial loads, but for any travel extending to 300mm or beyond, an external guide is required to prevent excessive side-loading and premature wear. Operating speed ranges from 30-800mm/s.
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 SAIJ100X250-100S FAQ
At 0.5 MPa it provides 3927N of push force and 3681N of pull force. At 0.9 MPa, the push force increases to 7068N.
The rear adjuster acts as a mechanical stop, allowing you to shorten the effective travel from the nominal 250mm down to 150mm. It sets the end position but does not lock the load without live air pressure.
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