Airtac SAIJ200 Adjustable Cylinder SAIJ200AX350-20
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX350-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 350mm 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
- Stroke350 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX350-20
The AirTAC SAIJ200X350-20 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the travel window from 330 to 350 mm without adding external stops. Delivering massive thrust, it pushes 21991N at 0.7 MPa and 28274N at 0.9 MPa, making it ideal for heavy-duty press operations. The extruded aluminum barrel integrates dual sensor grooves, and the piston rod is constructed from SUS420J2 stainless steel for enhanced corrosion resistance.
Equipped with a G3/4 PT tapered port and a robust M36x2 rod thread, this 200mm bore unit handles high side loads effectively. The rear adjuster functions purely as a travel stop to dial in the end position during commissioning; it is not a lock, so live air is required to hold the load. For true fail-safe load holding, consider the SAIL or BSAI series instead.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX350-20 Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX350-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 350 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 SAIJ200AX350-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×350 | 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 SAIJ200AX350-20 Is Used
Heavy Press Tuning
Dial in the exact 330-350mm end-stop during heavy press commissioning to accommodate varying material thicknesses without changing the cylinder.
Product Changeover
Quickly adjust the rear stopper on large automated lines when switching product sizes, saving the downtime of physically replacing a fixed-stroke cylinder.
Large Fixture Setup
Fine-tune the retract position on massive welding or clamping fixtures, using the external screw to set precise travel limits for different jig heights.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX350-20 the Right Cylinder?
Choose this 200mm bore adjustable-stroke cylinder when your application demands extreme force—up to 28274N at 0.9 MPa—that smaller bores cannot provide. If you need less force, stepping down to a 160mm bore yields 18095N at 0.9 MPa. The 20mm adjustment range is perfect for product changeovers on large machinery, allowing you to shift the end-stop quickly rather than swapping out a fixed-stroke SAI cylinder.
Because the 350mm stroke is substantial, the heavy M36x2 rod still requires an external guide to prevent sagging and side-load damage over long travel distances. This model uses a reduced SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and omits FB, CA, CB, and CR mounts. The PT port and SUS420J2 rod material are standard for this configuration.
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 SAIJ200AX350-20 FAQ
At 0.7 MPa it provides 21991N of push force, and at 0.9 MPa it delivers 28274N. The maximum push force at 1.0 MPa is 3204 kgf.
The rear adjuster screw lets you shorten the nominal 350mm stroke by up to 20mm, creating a usable travel window of 330-350mm. It acts only as a mechanical stop and does not lock the load without live air pressure.
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