Airtac SAIJ100 Adjustable Cylinder SAIJ100AX325-40S
The AirTAC SAIJ100 Adjustable Cylinder SAIJ100AX325-40S 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 interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ100 mm
- Stroke325 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM20×1.5
- CushionAdjustable, 36 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAIJ100 Adjustable Cylinder SAIJ100AX325-40S
The AirTAC SAIJ100X325-40-S is a double-acting, double-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. The extruded aluminum barrel includes sensor grooves on both sides, and because this is an -S variant, it contains a magnet for direct compatibility with AirTAC CMSE reed and DMSE electronic solid-state switches.
This model is configured with an SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance and utilizes PT tapered port threads. The rear adjuster acts purely as a mechanical stop to set the end position during commissioning; it does not lock the load without live air pressure. For load-holding requirements without continuous air, an external rod lock or related types like SAIL or BSAI should be specified instead.
Airtac SAIJ100 Adjustable Cylinder SAIJ100AX325-40S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100AX325-40S |
|---|---|
| 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 | 3682 N | 3682 N |
| 0.7 MPa | 5154 N | — |
| Max (@1.0 MPa) | 751 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ100 Adjustable Cylinder SAIJ100AX325-40S
| 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 SAIJ100AX325-40S Is Used
Product Size Changeovers
Dial in the 285-325mm travel window during line changeovers to accommodate different product lengths without replacing the cylinder or adding external mechanical stops.
End-Position Tuning
Fine-tune the exact retract distance at machine commissioning using the rear adjuster, ensuring perfect alignment of heavy 100mm bore tooling without costly re-machining.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100AX325-40S the Right Cylinder?
The adjustable stroke is selected over a fixed SAI cylinder when you need variable end-stops for rapid product changeovers without physically swapping the actuator. Because the 325mm stroke is relatively long, the 25mm rod diameter should still be paired with an external guide to prevent excessive side-loading on the piston.
When matching this for an ISO 15552 replacement, verify the 100mm bore, 325mm stroke, 40mm adjustment range, PT port threads, and the -S magnet. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, deliberately omitting FB, CA, CB, and CR brackets. Operating speed ranges from 30-800mm/s, and the cylinder features variable air cushions at both ends to decelerate the load smoothly.
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 SAIJ100AX325-40S FAQ
If pressure is increased to 0.9 MPa, the push force reaches 7068N.
The rear adjuster screw allows you to shorten the 325mm nominal stroke by up to 40mm, providing a usable travel window of 285-325mm. The adjuster functions as a mechanical stop to tune the end position and does not hold the load without live air pressure.
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