Airtac SAIJ100 Adjustable Cylinder SAIJ100X300-40S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X300-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 300mm 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
- Stroke300 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100X300-40S
The AirTAC SAIJ100X300-40-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering a robust 3927N push force at 0.5 MPa. It features a carbon steel piston rod and a PT tapered G1/2 port. The -40 code provides a 40mm adjustment range, creating a usable travel window of 260-300mm for precise end-position tuning during machine commissioning.
This model includes a magnet for CMSE reed and DMSE electronic sensors, which mount cleanly into the dual-side extruded aluminum barrel grooves. The rear adjuster acts purely as a mechanical stop to trim the stroke; it does not lock or hold the load without live air. For load-holding requirements without continuous air pressure, consider the SAIL or BSAI series instead.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X300-40S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X300-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 300 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 SAIJ100X300-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×300 | 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 SAIJ100X300-40S Is Used
Machine Changeover
Dial in the 260-300mm travel window during product size transitions without physically replacing the cylinder or repositioning hard stops.
Variable End-Stop Positioning
Ideal for diverters or gating mechanisms where the exact retract position needs occasional fine-tuning to accommodate different package sizes.
Assembly Press Tuning
Provides the high force (up to 7068N at 0.9 MPa) needed for pressing operations, with the rear screw allowing micro-adjustments to the final stroke end-point.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X300-40S the Right Cylinder?
Select this 100mm bore when an 80mm bore (providing 2513N push at 0.5 MPa) is insufficient for your load, but a 125mm bore (6136N) would be excessive. The 40mm adjustable stroke is ideal for product changeovers on a packaging line, allowing you to fine-tune the 260-300mm travel window without swapping the cylinder or adding external stops. When matching an ISO 15552 replacement, verify the 300mm stroke, 40mm adjustment, G1/2 PT port, and the -S magnet requirement.
Because the 300mm stroke is substantial, the 25mm rod diameter must handle increased side-load risks. Even with the larger rod thread (M20x1.5), an external guide rail is recommended for heavy or off-center loads to prevent premature seal wear. The mounting set is limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR options found in some other series.
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 SAIJ100X300-40S FAQ
At 0.5 MPa operating pressure, the push force is 3927N and the pull force is 3681N. If you increase the pressure to 0.9 MPa, the push force reaches 7068N.
The rear adjuster screw allows you to shorten the effective stroke by up to 40mm. This means the 300mm nominal stroke can be fine-tuned down to a 260mm minimum travel distance, giving you a 260-300mm usable window for precise end-position setup.
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