Airtac SAIJ200 Adjustable Cylinder SAIJ200AX550-75
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX550-75 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 550mm 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
- Stroke550 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX550-75
The AirTAC SAIJ200X550-75 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a nominal 550 mm stroke that can be dialed back by up to 75 mm, yielding a highly versatile 475-550 mm usable travel window for precise commissioning. Equipped with a robust 40 mm piston rod, it delivers 15708 N of push force and 15080 N of pull force at 0.5 MPa, making it suitable for moving massive loads.
This variant utilizes an SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance in demanding environments. Fluid is supplied via PT (tapered) G3/4 ports, and the extruded aluminum barrel includes sensor grooves on both sides for flexible switch placement. The rear adjustment mechanism functions strictly as a travel stop to fine-tune the end position without swapping the cylinder, while the variable air cushions handle deceleration.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX550-75 Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX550-75 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 550 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 SAIJ200AX550-75
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×550 | 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 SAIJ200AX550-75 Is Used
Heavy Press Tuning
Dial in the exact 475-550 mm end-stop for a large metal-forming press without adding external mechanical stops.
Product Size Changeover
Quickly adapt a heavy-duty conveyor diverter to accommodate varying product lengths on the production line.
Large Assembly Calibration
Fine-tune the retract position of a heavy component mating station during initial commissioning.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX550-75 the Right Cylinder?
Selecting this 200 mm bore cylinder is ideal when an application requires immense thrust—up to 15708 N at just 0.5 MPa—combined with the ability to fine-tune the retract end-position during machine setup or product changeover. If an application demands less force, stepping down to a 160 mm bore reduces the push output to 10053 N at 0.5 MPa, whereas fixed-stroke requirements without end-tuning are better served by the standard SAI series. For load-holding without live air pressure, this cylinder is insufficient as the rear adjuster is only a stop, meaning a SAIL or BSAI locking cylinder would be required.
Because the 550 mm stroke is substantial, the 40 mm rod and M36x2 thread provide necessary rigidity, but an external guide is strongly recommended to prevent side-loading damage over this long unsupported travel. When matching ISO 15552 dimensions for replacement, verify the 200 mm bore, 550 mm stroke, 75 mm adjustment range, PT G3/4 port, and the required mounting accessory from the SAIJ subset (Basic, FA, LB, TC, FTC, TCM1, TCM2).
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 SAIJ200AX550-75 FAQ
At 0.5 MPa operating pressure, this 200 mm bore cylinder provides 15708 N of push force and 15080 N of pull force. At the maximum 1.0 MPa pressure, it delivers up to 3204 kgf.
The rear adjuster acts as a mechanical stop that allows you to shorten the effective stroke from 550 mm down to a minimum of 475 mm. It only sets the travel end and deceleration; it does not lock the load without live air pressure.
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