Airtac SAIJ200 Adjustable Cylinder SAIJ200AX250-50
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX250-50 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 SAIJ200AX250-50
The AirTAC SAIJ200X250-50 is a double-acting ISO 15552 profile cylinder engineered for heavy-duty applications, delivering a maximum thrust of 3204 kgf at 1.0 MPa. It features a 250 mm nominal stroke equipped with a rear adjusting stopper that creates a precise 200-250 mm usable travel window. This built-in adjustability allows operators to fine-tune the retract end position at commissioning without swapping out the entire cylinder or adding external stops.
Built with an SUS420J2 stainless steel rod and PT tapered ports, this 200 mm bore unit handles substantial loads while resisting corrosion. The extruded aluminum barrel incorporates sensor grooves on both sides for flexible switch placement. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2, providing versatile installation without the need for FB, CA, CB, or CR brackets.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX250-50 Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX250-50 |
|---|---|
| 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 SAIJ200AX250-50
| 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 SAIJ200AX250-50 Is Used
Heavy Press Tuning
Dial in the exact bottoming position of a high-tonnage press within the 200-250 mm window during setup, ensuring perfect crimping depth without machining custom spacers.
Product Changeover Stops
Adjust the retract stopper on the fly when switching between product sizes on a heavy-material conveyor line, using the 50 mm trim range to accommodate varying package lengths.
Large Fixture Positioning
Securely move massive fabrication fixtures into place, leveraging the 3204 kgf maximum force and fine-tuning the final resting position to match machine tooling coordinates.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX250-50 the Right Cylinder?
Selecting this 200 mm bore cylinder is ideal when an application requires massive force—such as 21991 N of push force at 0.7 MPa—combined with on-the-fly end-position tuning. If the full 250 mm stroke is unnecessary, stepping down to a 160 mm bore (offering 14074 N push at 0.7 MPa) might suffice, but the SAIJ200X250-50 is chosen when extreme thrust and a 200-250 mm adjustable travel window are critical. The PT port thread and SUS420J2 rod material are fixed configurations for this SKU.
Because the 250 mm stroke exceeds 300 mm? No, but even at 250 mm, the 40 mm rod diameter provides rigidity, though long unsupported strokes still necessitate an external guide to prevent side-loading damage. Remember that the rear adjuster acts strictly as a travel stop and does not hold the load without live air; for load-holding without pneumatic pressure, consider an external rod lock or the AirTAC SAIL series. This cylinder is dimensionally interchangeable per ISO 15552.
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 SAIJ200AX250-50 FAQ
At its maximum operating pressure of 1.0 MPa, this 200 mm bore cylinder generates 3204 kgf of push force. At 0.5 MPa, it provides 15708 N of push force and 15080 N of pull force.
The rear adjusting screw acts as a mechanical stopper, allowing you to shorten the effective stroke by up to 50 mm. This creates a usable travel window of 200-250 mm from the 250 mm nominal stroke, enabling fine-tuning of the end position without replacing the cylinder.
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