Airtac SAIJ100 Adjustable Cylinder SAIJ100X375-50
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X375-50 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 SAIJ100X375-50
The AirTAC SAIJ100X375-50 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 3927N of push force at 0.5 MPa. Its integrated PT G1/2 port and 25mm carbon steel rod handle heavy loads, while the extruded aluminum barrel features dual sensor grooves. By turning the external stopper screw, you can trim the effective travel back by up to 50mm, creating a precise 325-375mm usable stroke window without adding external stops.
This adjuster functions purely as a mechanical travel stop that works alongside the variable air cushions at both ends to decelerate the piston. It does not lock or hold the load without continuous live air pressure. For position-holding requirements without air, an external rod lock or a related AirTAC SAIL pneumatic lock cylinder is required.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X375-50 Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X375-50 |
|---|---|
| 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 SAIJ100X375-50
| 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 SAIJ100X375-50 Is Used
Product Changeover
Dial in the 325-375mm stroke window during production line changeovers to accommodate varying package sizes without replacing hardware.
End-Position Tuning
Fine-tune the retract end-stop during machine commissioning to perfect tooling alignment while keeping the standard ISO 15552 footprint.
Heavy Load Handling
Leverage the 3927N push force at 0.5 MPa for pressing or lifting heavy assemblies, relying on the 25mm rod for structural stability.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X375-50 the Right Cylinder?
Choose this 100mm bore when a 63mm cylinder (providing 1559N push at 0.5 MPa) lacks the thrust for your tooling, but you want to avoid stepping up to a 125mm body. The 50mm adjustment range is ideal for machine setups requiring product-size changeovers, allowing you to fine-tune the end position at commissioning rather than swapping a fixed-stroke SAI cylinder. Because the 375mm stroke is relatively long, an external guide is recommended to prevent excessive side-loading on the 25mm rod.
When specifying an ISO 15552 replacement, match the 100mm bore, 375mm nominal stroke, 50mm adjustment code, PT G1/2 port, and carbon steel rod. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. Since no magnet is specified, position sensing via CMSE or DMSE switches is not enabled out of the box.
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 SAIJ100X375-50 FAQ
At 0.5 MPa operating pressure, this 100mm bore cylinder provides 3927N of push force and 3681N of pull force. At 0.7 MPa, the push force increases to 5497N.
The rear adjuster screw acts as a mechanical stop, allowing you to shorten the 375mm nominal stroke by up to 50mm, resulting in a usable travel window of 325-375mm. It sets the end position but does not lock the load without live air pressure.
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