Airtac SAIJ200 Adjustable Cylinder SAIJ200AX120-50
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX120-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 120mm 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
- Stroke120 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX120-50
The AirTAC SAIJ200X120-50 is a double-acting ISO 15552 profile cylinder engineered for heavy-duty applications, delivering a substantial 15708N push force at 0.5 MPa. It features an extruded aluminum barrel with sensor grooves on both sides and operates at speeds between 30-500 mm/s. This unit is configured with a SUS420J2 stainless steel rod (code A) and PT tapered port threads.
A rear mechanical stopper allows you to dial back the nominal 120 mm stroke by up to 50 mm, creating a precise 70-120 mm usable travel window for product changeovers. The 40 mm rod and M36x2 thread provide exceptional rigidity to handle high side loads. Remember the rear adjuster acts purely as a travel stop and does not lock the load without live air pressure; for true pneumatic locking, consider the SAIL or BSAI series.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX120-50 Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX120-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 120 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 SAIJ200AX120-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×120 | 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 SAIJ200AX120-50 Is Used
Heavy Press Tonnage
Provides up to 28274N of push force at 0.9 MPa for heavy stamping, riveting, and forming operations requiring immense power.
Variable End-Stop Tuning
The 50 mm rear adjuster creates a 70-120 mm travel window, allowing operators to fine-tune the retract position during machine setup and product changeovers.
Rigid Automation Frame
Features a 40 mm SUS420J2 stainless steel rod and M36x2 thread, offering high structural rigidity and side-load resistance in demanding industrial environments.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX120-50 the Right Cylinder?
Select this 200 mm bore cylinder when your application requires massive thrust, such as 21991N at 0.7 MPa, combined with the flexibility to fine-tune the end position during commissioning without swapping out the cylinder or adding external stops. If your force requirements are lower, stepping down to a 160 mm bore yields 10053N at 0.5 MPa, which may offer a more efficient footprint.
This adjustable-stroke model is dimensionally interchangeable per ISO 15552 mounting interfaces and supports a mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2. Because the 120 mm stroke is relatively short for this massive bore, an external guide is not strictly mandated, but the 40 mm rod diameter provides excellent resistance to deflection. To match this exact configuration, specify the 200 mm bore, 120 mm stroke, 50 mm adjustment, PT port threads, SUS420J2 rod, and no 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 SAIJ200AX120-50 FAQ
At a 0.5 MPa operating pressure, this 200 mm bore cylinder generates 15708N of push force and 15080N of pull force. At the maximum 1.0 MPa pressure, it delivers up to 3204 kgf.
A rear adjusting screw acts as a mechanical stopper, allowing you to shorten the effective stroke from the 120 mm nominal length down to 70 mm. This provides a 70-120 mm usable travel window for fine-tuning without replacing the cylinder.
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