Airtac SAIJ200 Adjustable Cylinder SAIJ200AX280-75S
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX280-75S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 280mm 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
- Stroke280 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX280-75S
The AirTAC SAIJ200X280-75-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, enabling a usable travel window of 205 to 280 mm. Delivering 21991 N of push force at 0.7 MPa, this heavy-duty actuator handles massive loads with precision. The integrated -S magnet supports position sensing via AirTAC CMSE reed and DMSE electronic switches, fitting neatly into the dual-side sensor grooves of the extruded aluminum barrel.
This variant features a robust SUS420J2 stainless steel piston rod (material code A) and PT tapered port threads. The rear adjuster acts purely as a mechanical stop to dial in the end position during commissioning without adding external stops; it is not a locking device and will not hold the load without live air pressure.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX280-75S Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX280-75S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 280 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 SAIJ200AX280-75S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×280 | 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 SAIJ200AX280-75S Is Used
Heavy Press Changeover
Dial in the 205-280 mm stroke during heavy press product changeovers to accommodate varying material thicknesses without swapping actuators.
Large Assembly Positioning
Fine-tune the end-stop on large automated assembly lines to guarantee precise clamping positions for oversized components.
Bulk Material Diverter
Adjust the retract distance of a heavy-duty diverter gate to handle different package sizes on a high-capacity conveyor system.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX280-75S the Right Cylinder?
Selecting this 200 mm bore model makes sense when an application requires the 21991 N force at 0.7 MPa and on-the-fly end-position tuning over a 75 mm window. If you need less force, stepping down to a 160 mm bore yields 14074 N at the same pressure, whereas moving up is not possible as this is the largest standard size. The adjustable stroke is chosen over a fixed SAI cylinder when machine setups require frequent product-size changeovers.
For load-holding without continuous air pressure, this plain SAIJ cylinder is insufficient as the adjuster only decelerates travel. You would need to specify a SAIL (air-released lock) or BSAI (clamp-lock) cylinder, or install an external pilot-operated check valve. Since the 280 mm stroke is substantial, always guide the load externally to prevent side-loading damage to the M36x2 rod thread. To match this ISO 15552 footprint exactly, ensure you specify the 200 mm bore, 280 mm stroke, 75 mm adjustment, PT ports, and the -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 SAIJ200AX280-75S FAQ
At an operating pressure of 0.7 MPa, this 200 mm bore cylinder generates 21991 N of push force and 15080 N of pull force. It can reach a maximum push force of 28274 N at 0.9 MPa.
The rear adjuster screw allows you to shorten the effective travel from the nominal 280 mm down to 205 mm, providing a 75 mm tuning window. This stopper only sets the end position and decelerates the load; it does not lock or hold the load without continuous air pressure.
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