Airtac SAIJ200 Adjustable Cylinder SAIJ200AX425-100
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX425-100 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 425mm 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
- Stroke425 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX425-100
The AirTAC SAIJ200X425-100 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. With a nominal 425 mm stroke and a 100 mm adjustment range, it provides a variable usable travel window of 325 to 425 mm. This allows precise end-position tuning at commissioning without swapping the cylinder or adding external stops. It delivers massive thrust, pushing 28274 N at 0.9 MPa, making it suitable for heavy-duty press operations.
This unit includes a SUS420J2 stainless steel rod (option A) for enhanced corrosion resistance and features PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides, although no magnet is specified for this configuration. The rear adjuster acts strictly as a travel stop to set deceleration endpoints; it does not hold the load without live air pressure.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX425-100 Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX425-100 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 425 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 SAIJ200AX425-100
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×425 | 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 SAIJ200AX425-100 Is Used
Heavy Press Tuning
Dial in the exact 325 to 425 mm end-position for large press operations, ensuring precise material deformation without adding external mechanical stops.
Product Changeover
Quickly adjust the travel window during product size transitions on a production line, saving time by avoiding complete cylinder replacement.
Large Assembly Setup
Fine-tune the stroke on heavy-duty assembly machinery to accommodate varying component dimensions during initial commissioning.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX425-100 the Right Cylinder?
Choose this 200 mm bore when you need maximum force, as it delivers up to 3204 kgf at 1.0 MPa. If your application requires less thrust, stepping down to a 160 mm bore provides 18095 N of push force at 0.9 MPa, which may better suit medium-duty setups. The adjustable stroke is ideal for variable end-stops during machine changeover, unlike a fixed-stroke SAI cylinder. For any load-holding requirements without continuous air pressure, this cylinder is insufficient; consider the SAIL or BSAI series instead.
Because the 425 mm stroke is substantial and the rod is 40 mm in diameter, an external guide is recommended to prevent excessive side-loading on the barrel. When matching ISO 15552 dimensions, specify the 200 mm bore, 425 mm stroke, 100 mm adjustment, PT port thread, and the SUS420J2 rod material. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, omitting FB, CA, CB, and CR.
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 SAIJ200AX425-100 FAQ
At 0.9 MPa operating pressure, the 200 mm bore generates 28274 N of push force and 2268 N of pull force. The maximum thrust at 1.0 MPa is 3204 kgf.
The rear adjuster allows you to shorten the effective travel from the nominal 425 mm down to 325 mm, creating a 100 mm usable window. It acts as a travel stop for end-position tuning and does not lock the load without live air pressure.
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