Airtac SAIJ100 Adjustable Cylinder SAIJ100X375-75
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X375-75 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 375mm 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
- Stroke375 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100X375-75
The AirTAC SAIJ100X375-75 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a 375 mm nominal stroke that can be fine-tuned down by up to 75 mm, yielding a precise 300-375 mm usable travel window. Equipped with a 25 mm carbon steel rod and G1/2 PT ports, it delivers 7068 N of push force at 0.9 MPa.
This adjustable-stroke design eliminates the need to swap cylinders or bolt on external stops during product changeovers. The extruded aluminum barrel includes dual sensor grooves for flexible switch placement, while the mounting interface supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 brackets. The rear screw acts purely as a travel stop and does not lock the load without live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X375-75 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X375-75 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 375 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 SAIJ100X375-75
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×375 | 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 SAIJ100X375-75 Is Used
Variable End-Stop Positioning
Dial in the exact retraction point between 300 and 375 mm during machine commissioning to accommodate different material lengths without changing hardware.
Product Size Changeover
Quickly adjust the rear stopper on packaging lines when switching between product sizes, leveraging the 7068 N thrust to handle heavy loads.
Long-Stroke Assembly Pressing
Use the 375 mm travel to reach deep into work areas, fine-tuning the final pressing position by up to 75 mm to ensure perfect assembly tolerances.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X375-75 the Right Cylinder?
Choose this 100 mm bore when an 80 mm cylinder (providing 4523 N push at 0.9 MPa) lacks the necessary thrust, but a 125 mm bore is excessive. The 75 mm adjustment window is ideal for machinery requiring variable end-stops between 300 and 375 mm. Because the total stroke reaches 375 mm, the 25 mm rod needs external guiding to prevent excessive side-loading and premature seal wear.
For an exact ISO 15552 replacement, match the 100 mm bore, 375 mm stroke, 75 mm adjuster, G1/2 PT ports, and carbon steel rod. If your application requires the piston to hold its position without continuous air pressure, select a SAIL lock or BSAI clamp-lock cylinder instead, as the SAIJ adjuster is strictly a stop and not a brake.
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 SAIJ100X375-75 FAQ
At 0.9 MPa operating pressure, this 100 mm bore cylinder generates 7068 N of push force and 5497 N of pull force. At the maximum 1.0 MPa pressure, it achieves 801 kgf.
The rear adjuster screw allows you to shorten the effective stroke by up to 75 mm, creating a 300-375 mm travel window. It acts as a physical stop for end-position tuning and is not a lock.
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