Airtac SAIJ100 Adjustable Cylinder SAIJ100X325-40S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X325-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø100mm bore and 325mm 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
- Stroke325 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100X325-40S
The AirTAC SAIJ100X325-40-S is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. By dialing in the external stopper, you can fine-tune the effective travel window from 285 to 325 mm during commissioning or product changeovers without swapping out the barrel. Built with a carbon steel rod and a PT tapered port thread, it delivers a robust 3927 N of push force at 0.5 MPa and 7068 N at 0.9 MPa.
This unit includes a magnet (-S) for use with AirTAC CMSE reed and DMSE solid-state sensors, which seat securely into the dual-side sensor grooves on the extruded aluminum barrel. The SAIJ series utilizes a specific mounting subset—Basic, FA, LB, TC, FTC, TCM1, and TCM2—omitting the FB, CA, CB, and CR options. The rear adjuster acts purely as a mechanical stop to set the retract end-position, so it does not hold the load without live air pressure.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X325-40S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X325-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø100 mm |
| Stroke | 325 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 SAIJ100X325-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 100 | Bore size in mm. |
| ×325 | 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 SAIJ100X325-40S Is Used
Machine Changeover
Rapidly dial in the 285-325 mm travel window during product size transitions without disassembling the cylinder or adding external stopper blocks.
Variable End-Stop Diverter
Adjust the retract position on the fly to accommodate varying package lengths on a sorting line, ensuring precise physical stops.
Press Fit Tuning
Fine-tune the exact end-of-stroke position during commissioning to achieve perfect pressing depth without re-machining hard stops.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X325-40S the Right Cylinder?
Choose this 100 mm bore when your application requires high thrust (3927 N at 0.5 MPa) alongside flexible end-position tuning; if you need less force, stepping down to a 63 mm bore yields 1559 N. An adjustable stroke is ideal for variable product sizes on a line, whereas a fixed SAI cylinder suits dedicated single-purpose stations. For load-holding without continuous air pressure, the SAIJ adjuster will not act as a lock—consider an AirTAC SAIL or BSAI series instead.
When replacing an ISO 15552 cylinder, match the 100 mm bore, 325 mm nominal stroke, 40 mm adjustment range, PT port thread, and the -S magnet option. Because the 325 mm stroke is relatively long, the 25 mm rod diameter handles higher side loads, but you should still use an external guide rail to prevent rod binding over extended travels.
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 SAIJ100X325-40S FAQ
At 0.5 MPa it provides 3927 N of push force and 3681 N of pull force. At 0.9 MPa, the push force increases to 7068 N.
The rear adjusting screw acts as a mechanical stop, allowing you to shorten the effective stroke from the nominal 325 mm down to 285 mm. It sets the travel end but does not lock or hold the load without live air pressure.
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