Airtac SAIJ200 Adjustable Cylinder SAIJ200AX145-75S
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX145-75S 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 SAIJ200AX145-75S
The AirTAC SAIJ200X145-75-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers massive thrust, yielding 15708N of push force and 15080N of pull force at 0.5 MPa. By turning the integrated rear stopper screw, you can trim the nominal 145 mm stroke back by up to 75 mm, creating a highly flexible 70-145 mm usable travel window for precise product changeovers.
This unit features a SUS420J2 stainless steel rod for superior corrosion resistance and includes a magnet for position sensing. It is designed for 30-500 mm/s operating speeds and uses PT tapered ports sized at G3/4. The extruded aluminum barrel incorporates sensor grooves on both sides, allowing you to easily mount CMSE reed or DMSE electronic switches exactly where needed without extra brackets.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX145-75S Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX145-75S |
|---|---|
| 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 SAIJ200AX145-75S
| 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 SAIJ200AX145-75S Is Used
Heavy Press Tuning
Dial in the exact 70-145 mm travel window during heavy press setup, ensuring perfect contact force without machining custom spacers.
Large Product Changeover
Adapt a single heavy-duty assembly station to accommodate different large product heights by simply rotating the rear adjuster screw.
Variable End Stops
Set precise retract end-positions for testing large components, using the 75 mm adjustment range to quickly alter the stroke limit on the fly.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX145-75S the Right Cylinder?
Choose this 200 mm bore actuator when your application demands extremely high force that smaller bores cannot provide, such as heavy stamping or large press operations. If you need less force, stepping down to a 160 mm bore provides 10053N of push force at 0.5 MPa, which might be a more efficient choice. The primary reason to select this SAIJ model over a fixed-stroke SAI is the 75 mm adjustment range, which allows you to fine-tune the end position at commissioning without swapping the cylinder or adding external stops.
For ISO 15552 replacement, match the 200 mm bore, 145 mm stroke, 75 mm adjustment, G3/4 PT ports, and the -S magnet requirement. Because this cylinder handles heavy loads, ensure your mounting setup—using the SAIJ compatible set of Basic, FA, LB, TC, FTC, TCM1, or TCM2 brackets—can support the weight. Remember that the rear adjuster acts only as a travel stop to decelerate the load; it does not hold the load without live air. For true fail-safe load holding, consider an AirTAC SAIL or BSAI cylinder instead.
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 SAIJ200AX145-75S FAQ
At a standard 0.5 MPa operating pressure, this 200 mm bore cylinder generates 15708N of push force and 15080N of pull force. It can reach a maximum push force of 28274N at 0.9 MPa.
The rear stopper screw allows you to shorten the effective travel from the 145 mm nominal stroke down to as little as 70 mm. This creates a 70-145 mm usable window, letting you fine-tune the end position at commissioning without changing the cylinder or adding external stops.
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