Airtac SAIJ200 Adjustable Cylinder SAIJ200AX450-20
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX450-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 450mm 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
- Stroke450 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX450-20
The AirTAC SAIJ200X450-20 is a double-acting ISO 15552 profile cylinder engineered for heavy-duty applications, featuring a robust 200 mm bore and a 450 mm stroke. An integrated rear adjusting screw allows you to trim the effective travel back by up to 20 mm, providing a precise 430-450 mm usable positioning window. This fine-tuning capability is invaluable during machine commissioning or product changeovers, as it eliminates the need to physically swap the cylinder or bolt on external stopper blocks.
Delivering immense thrust, this unit generates 15708 N of push force and 15080 N of pull force at a 0.5 MPa operating pressure. It features a SUS420J2 stainless steel rod for superior corrosion resistance and utilizes PT tapered port threads (G3/4) for secure pneumatic connections. The extruded aluminum barrel includes sensor grooves on both sides, ready to accept AirTAC CMSE reed or DMSE electronic switches if a magnet is specified later.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX450-20 Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX450-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 450 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 SAIJ200AX450-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×450 | 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 SAIJ200AX450-20 Is Used
Heavy Press Positioning
Dial in the exact 430-450 mm end-stop during heavy press commissioning to accommodate material thickness variances without adding external stops.
Large Assembly Changeover
Quickly adjust the retract position on an automated assembly line when switching between large product sizes, minimizing machine downtime.
Long-Stroke Material Handling
Move substantial loads along a 450 mm path while using the rear screw to fine-tune the deceleration point for delicate or high-mass components.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX450-20 the Right Cylinder?
Selecting this 200 mm bore cylinder is appropriate when your application demands extremely high force, stepping up significantly from a 160 mm bore that provides 10053 N push force at 0.5 MPa. The adjustable stroke is chosen over a fixed-stroke SAI model when mechanical setups require variable end-stops to accommodate slight dimensional variances in product handling. Because the stroke is 450 mm, an external guide should be used to support the load and prevent excessive side-loading on the rod.
For an exact ISO 15552 replacement match, verify the 200 mm bore, 450 mm stroke, 20 mm adjustment range, PT port threads, and the required mounting style. The SAIJ series supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts. Note that the rear adjuster acts only as a travel stop and does not hold the load without live air; for true load-holding without pneumatic pressure, consider the SAIL or BSAI series.
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 SAIJ200AX450-20 FAQ
At a 0.5 MPa operating pressure, this 200 mm bore cylinder delivers a push force of 15708 N and a pull force of 15080 N. At the maximum 1.0 MPa pressure, it achieves a maximum push force of 3204 kgf.
The rear adjusting screw acts as a mechanical stopper that lets you shorten the nominal 450 mm stroke by up to 20 mm, creating a 430-450 mm usable travel window. This allows for precise end-position tuning at commissioning without replacing the cylinder.
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