Airtac SAIJ200 Adjustable Cylinder SAIJ200AX25-20
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX25-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 25mm 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
- Stroke25 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX25-20
The AirTAC SAIJ200X25-20 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a nominal 25 mm stroke that can be fine-tuned down by 20 mm, yielding a precise 5 to 25 mm usable travel window. As the largest standard bore, it delivers immense thrust, pushing with 15708 N and pulling with 15080 N at 0.5 MPa. The 40 mm carbon steel rod and M36x2 thread provide a robust interface for heavy loads, while the PT tapered port threads ensure a tight pneumatic seal.
This heavy-duty actuator uses an extruded aluminum barrel with sensor grooves on both sides, distinguishing it from tie-rod constructions. The rear adjustment screw acts purely as a mechanical stop for commissioning and product changeovers, meaning it cannot hold a load without live air pressure. For load-holding requirements without continuous air, an external pilot-operated check valve or a related SAIL lock cylinder is required.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX25-20 Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX25-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 25 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 SAIJ200AX25-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×25 | 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 SAIJ200AX25-20 Is Used
Heavy Stamping Presses
Dial in the exact 5 to 25 mm travel window during heavy stamping setups to accommodate different material thicknesses without changing the cylinder.
Product Changeover
Use the 20 mm rear stopper screw to quickly adjust the end-position on automated lines when switching between product sizes.
Industrial Clamping
Leverage the 15708 N push force at 0.5 MPa for intense clamping tasks, fine-tuning the stroke to avoid crushing the workpiece.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX25-20 the Right Cylinder?
Selecting the SAIJ200X25-20 is ideal when a massive short-stroke force is needed but the exact end position varies per application. If you do not need up to 3204 kgf at 1.0 MPa, stepping down to a 160 mm bore saves space and yields 10053 N push at 0.5 MPa. The 20 mm adjustment range allows you to dial in the retract end-position during setup without adding external stops, unlike a fixed-stroke SAI cylinder. Because the 25 mm stroke is well under the 300 mm side-load threshold, the 40 mm rod handles the load independently.
To match this ISO 15552 interchangeable profile cylinder exactly, confirm the 200 mm bore, 25 mm stroke, 20 mm adjustment range, PT G3/4 port threads, SUS420J2 stainless steel rod, and no magnet. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, omitting FB, CA, CB, and CR. If position sensing is later needed, adding an -S magnet enables CMSE reed and DMSE electronic sensors.
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 SAIJ200AX25-20 FAQ
The rear adjuster screw allows you to shorten the 25 mm nominal stroke by up to 20 mm, providing a usable travel window of 5 to 25 mm. It acts as a mechanical stop and does not lock the load without live air pressure.
At 0.5 MPa operating pressure, this 200 mm bore cylinder provides 15708 N of push force and 15080 N of pull force. At its maximum 1.0 MPa pressure, it delivers up to 3204 kgf.
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