Airtac SAIJ200 Adjustable Cylinder SAIJ200AX250-75
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX250-75 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 250mm 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
- Stroke250 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX250-75
The AirTAC SAIJ200X250-75 is a double-acting, single-rod ISO 15552 profile cylinder engineered for heavy-duty applications requiring precise end-position tuning. An integrated rear adjusting screw allows you to shorten the nominal 250 mm stroke by up to 75 mm, providing a usable travel window of 175-250 mm without adding external stops. This adjuster acts purely as a travel stop to set the retract end-position and relies on the built-in air cushion for deceleration; it does not hold the load without live air pressure.
Featuring a robust 200 mm bore, this cylinder generates 15708 N of push force and 15080 N of pull force at 0.5 MPa. It incorporates a SUS420J2 stainless steel rod for enhanced corrosion resistance and utilizes PT tapered port threads (G3/4) for secure pneumatic connections. The extruded aluminum barrel includes sensor grooves on both sides, and because no magnet is specified, position sensing would require external or custom arrangements rather than the standard CMSE or DMSE switches.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX250-75 Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX250-75 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 250 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 SAIJ200AX250-75
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×250 | 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 SAIJ200AX250-75 Is Used
Variable End-Stop Positioning
Dial in the exact retract distance within the 175-250 mm window during machine commissioning to accommodate varying material thicknesses without physically swapping the cylinder.
Heavy-Duty Press Changeover
Leverage the 15708 N push force at 0.5 MPa for pressing operations, using the 75 mm rear adjuster to quickly modify the stroke end-position when switching between different product sizes on the line.
Large Assembly Calibration
Fine-tune the end-of-stroke contact force on large-scale assembly fixtures by trimming the travel up to 75 mm, ensuring delicate components are not crushed during automated placement.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX250-75 the Right Cylinder?
Select this 200 mm bore model when your application demands substantial force—up to 15708 N at just 0.5 MPa—and requires a variable end-stop for product changeovers. If your thrust requirements are lower, stepping down to a 160 mm bore yields 10053 N of push force at 0.5 MPa, which may suffice for lighter loads while reducing physical footprint. Conversely, if you need to hold a load securely without continuous live air pressure, a plain SAIJ is insufficient; you should evaluate the SAIL (air-released lock) or BSAI (clamp-lock) series instead, as the SAIJ rear adjuster is not a locking brake.
When replacing an ISO 15552 cylinder, match the 200 mm bore, 250 mm nominal stroke, 75 mm adjustment range, G3/4 PT ports, and the SUS420J2 (A) rod material. The SAIJ mounting interface supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 configurations, omitting the FB, CA, CB, and CR styles. Although this 250 mm stroke is below the 1500 mm maximum, the heavy 200 mm piston mass and 40 mm rod diameter mean that external guidance is still recommended to prevent excessive side-loading on the rod seals.
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 SAIJ200AX250-75 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, it can deliver up to 3204 kgf.
The rear adjuster screw acts as a mechanical stop that lets you shorten the 250 mm nominal stroke by up to 75 mm, creating a usable travel window of 175-250 mm. It sets the end-position and works with the air cushion for deceleration, but it does not lock or hold the load without live air pressure.
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