Airtac SAIJ200 Adjustable Cylinder SAIJ200AX225-20S
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX225-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 225mm 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
- Stroke225 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX225-20S
The AirTAC SAIJ200X225-20-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the nominal 225 mm stroke by up to 20 mm. This yields a precise 205-225 mm usable travel window, enabling fine end-position tuning at commissioning or during product changeover without swapping the cylinder or bolting on external stops. As an extruded aluminum profile cylinder, it is dimensionally interchangeable per ISO 15552 mounting interfaces.
Delivering massive thrust, this 200 mm bore unit generates 21991 N of push force at 0.7 MPa and reaches a maximum of 3204 kgf at 1.0 MPa. It features a SUS420J2 stainless steel rod (code A) for superior corrosion resistance and uses PT tapered port threads with a G3/4 connection. The integrated magnet (-S) supports position sensing via CMSE reed or DMSE electronic switches housed in the dual-side sensor grooves. Speeds range from 30-500 mm/s, supported by 50 mm variable air cushions at both ends.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX225-20S Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX225-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 225 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 SAIJ200AX225-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×225 | 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 SAIJ200AX225-20S Is Used
Heavy Press Tuning
Fine-tune the 205-225 mm stroke end-position precisely during heavy press commissioning without machining custom spacers.
Product Changeover
Quickly adjust the travel window on automated lines to accommodate varying product sizes during manufacturing changeovers.
Automated Assembly
Leverage the 21991 N push force and PT tapered ports for robust, high-force positioning in heavy industrial assembly.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX225-20S the Right Cylinder?
Select this adjustable model over a fixed-stroke SAI when your application requires variable end-stops or on-the-fly machine setup adjustments. If you need to step the bore down, the 160 mm neighbor provides 14074 N push force at 0.5 MPa, whereas this 200 mm bore delivers 15708 N at the same pressure. To match an ISO 15552 replacement, specify: 200 mm bore, 225 mm stroke, 20 mm adjustment, PT port threads, and the -S magnet. For strokes of 300 mm or more, an external guide is recommended to manage side loads, though this 225 mm unit pairs well with its robust 40 mm rod and M36x2 thread to handle standard loads.
Keep in mind the rear adjuster acts purely as a mechanical travel stop and the air cushions handle deceleration; neither holds the load without live air. For load-holding without continuous pressure, consider the SAIL pneumatic lock, BSAI clamp-lock, or an external rod lock.
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 SAIJ200AX225-20S FAQ
At 0.7 MPa operating pressure, this 200 mm bore cylinder provides 21991 N of push force and 21991 N pull force. It reaches a maximum thrust of 3204 kgf at 1.0 MPa.
The rear adjuster screw acts as a mechanical stop that lets you shorten the effective travel from the nominal 225 mm down to 205 mm. It allows end-position tuning without swapping cylinders, but it is not a lock and requires live air to hold the load.
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