Airtac SAIJ200 Adjustable Cylinder SAIJ200AX70-20
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX70-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 70mm 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
- Stroke70 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX70-20
The AirTAC SAIJ200X70-20 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a massive 15708N of push force at 0.5 MPa, with a nominal 70mm stroke that can be fine-tuned down to a 50-70mm usable travel window. This built-in adjustment allows precise end-position tuning during commissioning without swapping the cylinder or adding external stops.
Equipped with a SUS420J2 stainless steel rod and PT tapered port threads, this 200mm bore unit handles heavy loads. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch placement. The rear adjuster acts purely as a travel stop and does not hold the load without live air pressure.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX70-20 Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX70-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 70 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 SAIJ200AX70-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×70 | 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 SAIJ200AX70-20 Is Used
Heavy Press Tuning
Dial in the exact 50-70mm travel window during heavy press commissioning to accommodate material thickness variations without external stopper blocks.
Product Changeover
Quickly adjust the retract end-position on a heavy assembly line when switching to a new product size, leveraging the 20mm rear adjustment screw.
High-Force Positioning
Move substantial loads with 15708N push force at 0.5 MPa while using the rear stopper to precisely set the retracted end-state.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX70-20 the Right Cylinder?
Select this 200mm bore cylinder when your application requires extreme thrust, such as 15708N push at 0.5 MPa, stepping up significantly from the 100mm bore which provides 3927N. The adjustable stroke is ideal for machine setups requiring a variable end-stop to dial in the exact 50-70mm travel. For load-holding without continuous air pressure, this cylinder is insufficient; consider the SAIL or BSAI series, or an external pilot-operated check valve, because the SAIJ adjuster is a stop, not a lock.
To match this ISO 15552 interchangeable cylinder for a replacement, verify the 200mm bore, 70mm nominal stroke, 20mm adjustment range, PT G3/4 port, and the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2). No magnet is specified, so CMSE or DMSE sensors cannot be used without a -S variant.
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 SAIJ200AX70-20 FAQ
The rear adjuster screw allows you to shorten the effective travel from the nominal 70mm down to 50mm, creating a 50-70mm usable window. This stopper only sets the end position; it does not lock the load without live air pressure.
At 0.5 MPa operating pressure, it provides 15708N of push force and 15080N of pull force. At the maximum 1.0 MPa pressure, the push force reaches 3204 kgf.
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