Airtac SAIJ200 Adjustable Cylinder SAIJ200X425-40
The AirTAC SAIJ200 Adjustable Cylinder SAIJ200X425-40 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 interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ200 mm
- Stroke425 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200X425-40
The AirTAC SAIJ200X425-40 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a usable travel window of 385 to 425 mm, allowing you to dial back the end position by up to 40 mm during commissioning.
The extruded aluminum barrel includes sensor grooves on both sides for mounting CMSE reed or DMSE electronic switches. The rear adjustment screw acts purely as a mechanical stop to fine-tune the retract position without adding external stops. It supports a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2, deliberately omitting FB, CA, CB, and CR.
Airtac SAIJ200 Adjustable Cylinder SAIJ200X425-40 Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200X425-40 |
|---|---|
| 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 | 15080 N | 15080 N |
| 0.7 MPa | 21111 N | — |
| Max (@1.0 MPa) | 3075 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ200 Adjustable Cylinder SAIJ200X425-40
| 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 SAIJ200X425-40 Is Used
Heavy Press Tuning
Dial in the exact 385-425 mm end-stop during heavy press commissioning to accommodate varying material thicknesses without external stopper blocks.
Product Size Changeover
Quickly adjust the retract position by up to 40 mm on automated assembly lines when switching to a new product format, minimizing machine downtime.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200X425-40 the Right Cylinder?
Select this 200 mm bore when your application requires extreme thrust, such as 15708 N at 0.5 MPa or 21991 N at 0.7 MPa. If your force requirements are lower, stepping down to a 160 mm bore yields 10053 N at 0.5 MPa, while still offering a 40 mm cushion length. The adjustable stroke is ideal for machine setups requiring variable end-stops or product-size changeovers without replacing the cylinder. Because the nominal stroke is 425 mm, an external guide is strongly recommended to handle side loads on the long unsupported rod. For applications needing to hold a load without live air pressure, note that the SAIJ adjuster is a travel stop and not a lock; you should specify an AirTAC SAIL or BSAI cylinder instead. To replace this ISO 15552 cylinder, match the 200 mm bore, 425 mm stroke, 40 mm adjustment, G3/4 PT port, and the required mounting bracket.
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 SAIJ200X425-40 FAQ
At 0.7 MPa, the push force increases to 21991 N.
The rear adjuster screw allows you to shorten the 425 mm nominal stroke by up to 40 mm, creating a usable travel window of 385 to 425 mm. This stopper only sets the end position; it does not lock the load without live air pressure.
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Standard models are processed and dispatched in 3-5 business days.
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