Airtac SAIJ100 Adjustable Cylinder SAIJ100X250-30
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X250-30 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 SAIJ100X250-30
The AirTAC SAIJ100X250-30 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a nominal 250 mm travel that can be fine-tuned down by up to 30 mm, yielding a usable 220-250 mm window. Delivering 3927 N of push force at 0.5 MPa, it handles heavy positioning tasks with ease.
This extruded aluminum profile barrel includes sensor grooves on both sides. Without a magnet specified, position sensing requires external limit switches. The robust 25 mm carbon steel rod and M20x1.5 thread provide excellent side-load resistance, while the rear stopper allows precise end-position tuning during commissioning without adding external stops.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X250-30 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X250-30 |
|---|---|
| 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 SAIJ100X250-30
| 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 SAIJ100X250-30 Is Used
Machine Setup Changeover
Dial in the 220-250 mm retract window during product family changeovers without physically replacing the cylinder or adding mechanical shims.
Variable End-Stop Positioning
Fine-tune the final end position on heavy machinery to compensate for mechanical wear or varying material thicknesses directly at the rear adjuster.
Heavy-Duty Forming Press
Leverage the 3927 N push force at 0.5 MPa for pressing applications where the exact bottoming position must be precisely set and occasionally trimmed.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X250-30 the Right Cylinder?
Choose this 100 mm bore when a smaller 80 mm cylinder (providing 2513 N push at 0.5 MPa) lacks the required thrust. The adjustable 220-250 mm window is ideal for product changeovers, letting you dial in the exact retract distance on the fly instead of swapping a fixed-stroke SAI cylinder. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2.
The PT tapered port matches the G1/2 standard for this bore. Keep in mind the rear adjuster acts only as a travel stop and does not hold the load without live air; for fail-safe load holding, consider an external rod lock or a SAIL/BSAI cylinder. Because the 250 mm stroke is under 300 mm, side-load risks are moderate, but external guides are still recommended for heavy lateral loads.
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 SAIJ100X250-30 FAQ
At 0.5 MPa operating pressure, this 100 mm bore cylinder provides 3927 N of push force and 3681 N of pull force. At 0.7 MPa, the push force increases to 5497 N.
The rear adjuster acts as a mechanical stop, allowing you to shorten the 250 mm nominal stroke by up to 30 mm, creating a 220-250 mm usable travel window. It sets the end position but does not lock the load without live air pressure.
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