Airtac SAIJ200 Adjustable Cylinder SAIJ200AX145-40
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX145-40 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 SAIJ200AX145-40
The AirTAC SAIJ200X145-40 is a double-acting ISO 15552 profile cylinder equipped with a rear mechanical adjuster, allowing you to dial back the nominal 145 mm stroke by up to 40 mm. This creates a usable travel window of 105-145 mm, enabling precise end-position tuning during commissioning without swapping out the physical actuator. It delivers massive thrust, pushing 15708 N and pulling 15080 N at 0.5 MPa.
This unit features a SUS420J2 stainless steel rod (material code A) for enhanced corrosion resistance, PT tapered port threads, and operates at 30-500 mm/s. The extruded aluminum barrel includes sensor grooves on both sides, though this specific SKU omits the magnet, meaning position sensing requires a separate piston magnet. The rear adjuster acts strictly as a travel stop to set deceleration, not as a locking device to hold loads without air pressure.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX145-40 Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX145-40 |
|---|---|
| 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 SAIJ200AX145-40
| 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 SAIJ200AX145-40 Is Used
Heavy Press Tuning
Dial in the exact 105-145 mm pressing depth during machine commissioning to prevent over-travel on dense materials.
Product Changeovers
Quickly adjust the retract end-stop for different product heights on a heavy-duty line without changing the actuator.
Variable End Stops
Set precise deceleration points for heavy 15080 N pull loads without fabricating custom external mechanical stops.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX145-40 the Right Cylinder?
Selecting this 200 mm bore actuator is appropriate when your application requires up to 15708 N of push force at 0.5 MPa. If your load demands less energy, stepping down to a 160 mm bore provides 10053 N of push force, saving air volume. The adjustable stroke is chosen over a fixed SAI cylinder when machine setups involve frequent product-size changeovers, allowing operators to fine-tune the retract end-position on the fly rather than adding external stops. To replace an ISO 15552 cylinder, match the 200 mm bore, 145 mm stroke, 40 mm adjustment range, PT G3/4 port, and mounting style. Because the 145 mm stroke is relatively short for this large bore, side-load stress is minimal, but external guiding remains best practice for heavy loads. Note that the SAIJ mounting set is limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR brackets.
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 SAIJ200AX145-40 FAQ
At 0.5 MPa operating pressure, this 200 mm bore cylinder provides a push force of 15708 N and a pull force of 15080 N. At the maximum 1.0 MPa pressure, it can deliver up to 3204 kgf.
The rear adjuster screw allows you to shorten the 145 mm nominal stroke by up to 40 mm, providing an effective travel window of 105-145 mm. This stopper sets the end position but does not lock the load; for load-holding without air, use a SAIL or BSAI cylinder.
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