Airtac SAIJ200 Adjustable Cylinder SAIJ200AX325-20S
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX325-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 325mm stroke, G3/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ200 mm
- Stroke325 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX325-20S
The AirTAC SAIJ200X325-20-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, providing a usable travel window of 305 to 325 mm. Operating at 0.5 MPa, it generates 15708 N of push force and 15080 N of pull force, making it suitable for moving massive loads. The extruded aluminum barrel features sensor grooves on both sides, and because this SKU includes the -S magnet option, it is fully compatible with AirTAC CMSE reed and DMSE electronic solid-state switches for precise end-of-stroke detection.
This model utilizes a SUS420J2 stainless steel rod (material code A) for superior corrosion resistance, paired with a PT tapered port thread and a robust M36x2 rod thread. The rear adjustment mechanism acts strictly as a travel stop to fine-tune the end position during commissioning without swapping the cylinder. It is important to note that this adjuster is not a lock; the cylinder cannot hold a load without live air pressure.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX325-20S Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX325-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 325 mm |
| Acting type | Double acting |
| Port size | G3/4 |
| Rod thread | M36×2 |
| 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 – 500 mm/s |
| Cushion | Adjustable, 50 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 (Ø200mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 15708 N | 15080 N |
| 0.7 MPa | 21991 N | — |
| Max (@1.0 MPa) | 3204 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ200 Adjustable Cylinder SAIJ200AX325-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | 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 SAIJ200 Adjustable Cylinder SAIJ200AX325-20S Is Used
Heavy Press Tuning
Dial in the exact 305-325 mm travel window during heavy press commissioning to accommodate varying material thicknesses without repositioning the entire fixture.
Product Size Changeover
Adapt a high-thrust conveyor diverter on the fly for different package lengths by adjusting the rear stopper, avoiding the need to swap out a fixed-stroke cylinder.
Large Assembly End-Stop
Establish a precise, repeatable end-of-stroke position for large automotive or industrial component assembly, leveraging the 15708 N push force at 0.5 MPa.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX325-20S the Right Cylinder?
Selecting this 200 mm bore cylinder is ideal when your application requires the maximum standard ISO 15552 thrust class, as stepping down to a 160 mm bore drops the 0.5 MPa push force to 10053 N. The 20 mm rear adjuster is chosen over a fixed-stroke SAI cylinder when you need variable end-stops for product changeovers, allowing you to dial in the exact 305-325 mm travel without adding external physical stops. For load-holding requirements without live pressure, this cylinder is insufficient; you should pivot to the SAIL (air-released lock) or BSAI (clamp-lock) series instead.
Because the 325 mm stroke is substantial and the piston rod is 40 mm in diameter, the unsupported length is highly susceptible to side-loading and buckling. Even with the substantial M36x2 rod thread, you must incorporate an external guide rail to support the load and prevent rod damage. This SAIJ model supports the reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting the FB, CA, CB, and CR foot and pivot brackets.
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 SAIJ200 Adjustable Cylinder SAIJ200AX325-20S FAQ
At a 0.5 MPa operating pressure, this 200 mm bore cylinder provides 15708 N of push force and 15080 N of pull force. At the maximum 1.0 MPa pressure, the push force reaches 28274 N.
The rear adjuster acts as a mechanical stop that allows you to shorten the effective travel from the nominal 325 mm down to 305 mm. This enables fine-tuning of the end position during setup, but it does not lock the load in place without continuous air pressure.
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