Airtac SAIJ100 Adjustable Cylinder SAIJ100X325-50S
The AirTAC Airtac SAIJ100 Adjustable Cylinder SAIJ100X325-50S 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 SAIJ100X325-50S
The AirTAC SAIJ100X325-50-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the effective travel window from 275 to 325 mm. Delivering a robust 7068 N of push force at 0.9 MPa, it is built to handle heavy-duty positioning tasks. The extruded aluminum barrel includes sensor grooves on both sides, and because this is the -S variant, it comes with a magnet for use with CMSE reed and DMSE electronic solid-state switches.
This model uses a substantial 25 mm rod and M20x1.5 thread, which provides excellent rigidity against side loads, though at 325 mm of stroke an external guide is still recommended for optimal bearing life. The rear adjuster acts purely as a mechanical stop for end-position tuning and does not hold the load without live air pressure. It supports a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR.
Airtac SAIJ100 Adjustable Cylinder SAIJ100X325-50S Technical Specifications
| Model | Airtac SAIJ100 Adjustable Cylinder SAIJ100X325-50S |
|---|---|
| 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 SAIJ100X325-50S
| 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 SAIJ100X325-50S Is Used
Changeover Adjustment
Dial in the 275-325 mm travel window during product size changeovers on a packaging line without physically swapping cylinders or machining new stopper blocks.
Heavy Pressing
Leverage the 7068 N push force at 0.9 MPa for heavy-duty pressing and forming operations that require exact end-position tuning at commissioning.
Sensor Integration
Utilize the integrated magnet with DMSE solid-state electronic sensors to confirm end-of-stroke positions accurately within the adjusted travel range.
Is the Airtac SAIJ100 Adjustable Cylinder SAIJ100X325-50S the Right Cylinder?
Choose this 100 mm bore cylinder when your application requires substantial thrust—up to 5497 N at 0.7 MPa—and a variable end-stop for product changeovers. If your force requirements are lower, stepping down to an 80 mm bore yields 4523 N at 0.9 MPa, whereas moving up to a 125 mm bore provides 11045 N. The 50 mm adjustment range is perfect for dialing in exact end positions at commissioning without swapping out the physical cylinder or adding external stopper blocks.
When replacing an ISO 15552 cylinder, match the 100 mm bore, 325 mm stroke, 50 mm adjustment, PT tapered port thread, and the -S magnet requirement. Because the stroke is 325 mm, ensure your setup includes an external guide to support the load. Remember that the rear adjuster is a travel stop, not a lock; for true load-holding without live air 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 SAIJ100X325-50S FAQ
At 0.9 MPa it provides 7068 N of push force and 6624 N of pull force. At a standard 0.5 MPa, it delivers 3927 N push and 3681 N pull.
The rear adjuster screw lets you mechanically shorten the 325 mm nominal stroke by up to 50 mm, creating a 275-325 mm usable travel window. It acts as a stop for end-position tuning and does not lock the load without air pressure.
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