Airtac SAIJ200 Adjustable Cylinder SAIJ200AX145-20
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX145-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 145mm 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
- Stroke145 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX145-20
The AirTAC SAIJ200X145-20 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering a massive 15708 N of push force at 0.5 MPa. By integrating an external adjusting screw, this 145 mm nominal stroke unit allows you to fine-tune the retract end position, creating a precise 125-145 mm usable travel window without adding external stops. The extruded aluminum barrel features sensor grooves on both sides for straightforward position feedback.
Configured with a robust 40 mm SUS420J2 stainless steel rod and PT tapered ports, this heavy-duty actuator handles rigorous industrial demands. It utilizes a reduced mounting subset of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR brackets. The rear stopper sets the travel end point, but it is not a locking mechanism; the cylinder requires live air to hold a load, so a SAIL or BSAI variant is necessary for pneumatic locking.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX145-20 Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX145-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 145 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 SAIJ200AX145-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×145 | 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 SAIJ200AX145-20 Is Used
Heavy Machinery Positioning
Dial in the exact 125-145 mm retract position during heavy machinery assembly to accommodate varying workpiece sizes without machining custom spacers.
Product Line Changeover
Quickly adjust the stroke end-point by up to 20 mm during production format changes, enabling rapid transitions between different product dimensions.
High-Force Clamping
Leverage the 15708 N push force at 0.5 MPa for robust clamping, using the rear screw to fine-tune the clamping depth precisely at the commissioning stage.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX145-20 the Right Cylinder?
Select this 200 mm bore actuator when your application requires extreme thrust, such as 21991 N at 0.7 MPa, combined with on-the-fly end-position tuning during machine commissioning. If your setup does not need the maximum 3204 kgf at 1.0 MPa, stepping down to a 160 mm bore yields 10053 N at 0.5 MPa while saving physical space. Because the 145 mm stroke is under the 300 mm threshold, side-load stress is lower, though the substantial 40 mm rod diameter still provides excellent resistance to bending under heavy loads.
When specifying a replacement, ensure you match the 200 mm bore, 145 mm stroke, 20 mm adjustment range, PT port threads, and the SUS420J2 rod material. Choose this adjustable SAIJ model over a fixed-stroke SAI when product changeovers demand a variable end-stop, and remember that for load-holding without continuous air pressure, an external rod lock or pilot-operated check valve is required.
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 SAIJ200AX145-20 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 0.7 MPa, the push force increases to 21991 N.
The rear adjusting screw acts as a mechanical stopper that trims the effective travel back from the 145 mm nominal stroke. This creates a 125-145 mm usable travel window, allowing you to set the exact end position during setup without swapping the cylinder.
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