Airtac SAIJ100 Adjustable Cylinder SAIJ100X325-20S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X325-20S 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 SAIJ100X325-20S
The AirTAC SAIJ100X325-20-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers 3927 N of push force at 0.5 MPa and features a 325 mm nominal stroke that can be fine-tuned down by 20 mm, creating a precise 305-325 mm usable travel window. This built-in adjustability allows you to dial in the retract end position during commissioning without adding external stops.
This model includes a magnet for position sensing and uses a PT tapered port thread. The extruded aluminum barrel incorporates sensor grooves on both sides, supporting AirTAC CMSE reed and DMSE electronic solid-state switches. It utilizes a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X325-20S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X325-20S |
|---|---|
| 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 SAIJ100X325-20S
| 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 SAIJ100X325-20S Is Used
Machine Setup Changeover
Fine-tune the 305-325 mm retract position during product family changeovers without swapping out the entire actuator or re-engineering external hard stops.
Variable End-Stop Positioning
Dial in the exact end-of-stroke location on a heavy-duty conveyor diverter where the nominal 325 mm travel needs a 10 mm trim to align perfectly with the packaging line.
Heavy-Duty Forming Press
Leverage the 3927 N push force at 0.5 MPa to form or stamp components, using the rear screw to precisely set the bottoming position for different material thicknesses.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X325-20S the Right Cylinder?
Select this 100 mm bore when an application requires high thrust, such as 3927 N push at 0.5 MPa, alongside variable end-stop positioning. If you need less force, stepping down to an 80 mm bore yields 2513 N push force. The adjustable stroke is chosen over a fixed SAI cylinder when product changeovers require a slightly variable retract position. For this 325 mm stroke, the 25 mm rod and M20x1.5 thread handle substantial loads, but an external guide is recommended to prevent excessive side-loading on long unsupported travels.
To match this ISO 15552 dimensionally interchangeable cylinder, confirm the 100 mm bore, 325 mm stroke, 20 mm adjustment, G3/8 port, and -S magnet. The rear adjuster acts only as a travel stop and does not hold the load without live air; for true load-holding without pressure, consider an AirTAC SAIL or BSAI cylinder.
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 SAIJ100X325-20S FAQ
At 0.5 MPa operating pressure, this 100 mm bore cylinder provides 3927 N of push force and 3681 N of pull force. At 0.7 MPa, the push force increases to 5497 N.
The rear adjuster screw allows you to shorten the effective stroke by up to 20 mm, providing a usable travel window of 305 to 325 mm. It acts as a mechanical stop to fine-tune the end position and is not a locking device.
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