Airtac SAIJ200 Adjustable Cylinder SAIJ200X425-75S
The AirTAC SAIJ200 Adjustable Cylinder SAIJ200X425-75S 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 SAIJ200X425-75S
The AirTAC SAIJ200X425-75-S is a double-acting, double-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. This built-in adjustability allows you to dial in exact end positions during commissioning without adding external stops.
This configuration includes a magnetic piston for position detection via CMSE reed or DMSE electronic sensors. It uses a G3/4 PT tapered port and a robust 40mm carbon steel rod. The extruded aluminum barrel incorporates sensor grooves on both sides, and the mounting interface supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 brackets.
Airtac SAIJ200 Adjustable Cylinder SAIJ200X425-75S Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200X425-75S |
|---|---|
| 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 SAIJ200X425-75S
| 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 SAIJ200X425-75S Is Used
Heavy Press Tuning
Dial in the exact bottoming position of a large press within the 350-425mm window during setup, ensuring precise force application without swapping cylinders.
Multi-Size Tooling
Adapt automated heavy machinery to different product lengths by adjusting the rear stopper by up to 75mm, facilitating rapid line changeovers.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200X425-75S the Right Cylinder?
If your load demands less force, stepping down to a 160mm bore provides 10053N at 0.5 MPa, whereas this SAIJ200 is necessary for heavy-duty pressing and lifting. The adjustable stroke is chosen over a fixed SAI when a machine handles multiple product sizes, allowing rapid changeover by shifting the retract end-stop within the 350-425mm range.
Because the 425mm stroke is substantial, the 40mm rod and M36x2 thread provide necessary rigidity, but an external guide is recommended to prevent excessive side-loading on the piston. The rear adjuster acts only as a travel stop and does not hold the load without live air; for fail-safe load holding, consider an AirTAC SAIL or BSAI cylinder. To match this ISO 15552 interchangeable cylinder, specify the 425mm stroke, 75mm adjustment, PT port, and -S magnet.
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 SAIJ200X425-75S FAQ
At 0.7 MPa, the push force increases to 21991N.
The rear adjuster acts as an external stopper that lets you shorten the effective travel from the 425mm nominal stroke down to 350mm. It sets the retract end position but does not lock the load without continuous air pressure.
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