Airtac SAIJ200 Adjustable Cylinder SAIJ200AX120-50S
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX120-50S 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 SAIJ200AX120-50S
The AirTAC SAIJ200X120-50-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the nominal 120 mm travel by up to 50 mm. This creates a precise 70-120 mm usable stroke window, perfect for dialing in end positions during commissioning without adding external stops. As an extruded aluminum profile cylinder, it is dimensionally interchangeable per ISO 15552 standards.
In the 200 mm bore class, this model generates 15708 N of push force and 15080 N of pull force at 0.5 MPa, scaling up to a maximum of 3204 kgf at 1.0 MPa. It features a 40 mm carbon steel rod, though this specific SKU uses an SUS420J2 stainless steel rod (code A) for improved corrosion resistance. The integrated -S magnet works seamlessly with AirTAC CMSE reed and DMSE solid-state sensors mounted in the dual-side barrel grooves.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX120-50S Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX120-50S |
|---|---|
| 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 SAIJ200AX120-50S
| 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 SAIJ200AX120-50S Is Used
Heavy Press Tuning
Dial in the exact 70-120 mm end-stop during heavy press commissioning to accommodate material thickness variations without machining custom spacers.
Product Changeover
Rapidly adjust the retract position on automated packaging lines when switching to a different pallet or product size, minimizing downtime.
Variable End Stopping
Use the 50 mm adjustment window to fine-tune the resting position of heavy tooling platens, ensuring precise alignment before applying full clamping force.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX120-50S the Right Cylinder?
Choose this 200 mm bore when your application requires extreme thrust that exceeds the 10053 N push force of the smaller 160 mm bore at 0.5 MPa. The 50 mm adjustment range is ideal for product-size changeovers on heavy machinery, letting operators fine-tune the retract end position on the fly instead of swapping out the entire cylinder for a fixed-stroke SAI variant.
Because the rear adjuster acts purely as a travel stop and the air cushions only manage deceleration, this cylinder will not hold a load without live air pressure. For fail-safe load holding, consider an AirTAC SAIL pneumatic lock, a BSAI clamp-lock cylinder, or an external pilot-operated check valve. This SKU uses PT tapered port threads and supports SAIJ mounting sets including Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR).
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 SAIJ200AX120-50S FAQ
At 0.5 MPa operating pressure, the 200 mm bore generates 15708 N of push force and 15080 N of pull force. At the maximum rated pressure of 1.0 MPa, it delivers up to 3204 kgf.
The rear adjuster screw allows you to shorten the effective travel from the 120 mm nominal stroke by up to 50 mm, providing a usable stroke window of 70 to 120 mm for precise end-position tuning.
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