Airtac SAIJ200 Adjustable Cylinder SAIJ200AX240-20
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX240-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 240mm 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
- Stroke240 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX240-20
The AirTAC SAIJ200X240-20 is a double-acting, adjustable-stroke ISO 15552 profile cylinder engineered for heavy-duty pneumatic tasks. It features a 240 mm nominal stroke paired with a 20 mm rear adjustment screw, providing a usable travel window of 220 to 240 mm. This allows operators to dial in the exact retract end-position during commissioning without swapping out the barrel or adding external stopper blocks. Delivering a robust 15708 N of push force at 0.5 MPa, it is built to move substantial masses with precision.
This model incorporates a SUS420J2 stainless steel rod for enhanced corrosion resistance and utilizes PT tapered port threads for a high-integrity pneumatic seal. As an extruded aluminum profile cylinder, it includes sensor grooves on both sides for mounting position switches. The rear adjuster acts purely as a travel stop to set deceleration and end-limits, meaning it will not hold the load safely without continuous live air pressure.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX240-20 Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX240-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 240 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 SAIJ200AX240-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×240 | 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 SAIJ200AX240-20 Is Used
Heavy Press Damping
Fine-tune the 220-240 mm travel window during heavy press setups to perfectly time the deceleration of massive 15708 N loads without changing the cylinder.
Variable Product Changeover
Adapt the retract end-stop on the fly for different product sizes on a production line, using the 20 mm adjustment screw to accommodate varying material thicknesses.
Machine Commissioning
Dial in the exact end-of-stroke position during initial machine build or maintenance, eliminating the need to bolt on custom external stoppers to find the perfect travel limit.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX240-20 the Right Cylinder?
Selecting the SAIJ200X240-20 is ideal when an application requires extreme thrust—up to 15708 N at 0.5 MPa or 21991 N at 0.7 MPa—and on-the-fly end-position tuning. If an application demands less force, stepping down to a 160 mm bore drops the 0.5 MPa push force to 10053 N, which might better suit medium-heavy loads and reduce air consumption. Conversely, if the 240 mm stroke is fixed and requires no adjustment, a standard SAI cylinder offers the same footprint without the adjuster mechanism.
For load-holding requirements without constant air pressure, this cylinder is insufficient; the rear stopper is not a brake, so you must integrate an external rod lock or pilot-operated check valve, or select the SAIL or BSAI series. Because this is a 240 mm stroke, side-load risks are moderate, but for any stroke of 300 mm or more, an external guide rail becomes strictly necessary to prevent rod binding. This SKU uses a PT port thread, supports the reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2—omitting FB, CA, CB, CR), and ships without a magnet (-S omitted).
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 SAIJ200AX240-20 FAQ
At a 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 allows you to shorten the effective stroke by up to 20 mm, creating a 220 to 240 mm usable travel window. It acts as a mechanical stop to fine-tune the end position, but it is not a lock and requires live air to hold the load.
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