Airtac SAIJ200 Adjustable Cylinder SAIJ200AX55-20S
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX55-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 55mm 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
- Stroke55 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX55-20S
The AirTAC SAIJ200X55-20-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the 55 mm nominal stroke by up to 20 mm. This yields a usable travel window of 35-55 mm, enabling precise end-position tuning at commissioning without adding external stops. As the largest standard bore, it delivers immense thrust—15708 N push and 15080 N pull at 0.5 MPa—making it ideal for heavy-duty press operations.
This SKU features a SUS420J2 stainless steel rod (code A) for superior corrosion resistance and includes a magnet (-S) for position detection with AirTAC CMSE reed or DMSE electronic sensors. The extruded aluminum barrel incorporates sensor grooves on both sides, and the PT tapered ports ensure a tight, leak-free pneumatic connection.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX55-20S Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX55-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 55 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 SAIJ200AX55-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×55 | 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 SAIJ200AX55-20S Is Used
Heavy-Duty Pressing
Delivers up to 15708 N of push force at 0.5 MPa for assembling large components, with a 35-55 mm adjustable window to dial in the exact crush depth.
Product Changeovers
Quickly reconfigure the end-stop on a production line for new part dimensions without swapping out the entire cylinder or bolting on external stops.
Automated Forming
Uses the rear mechanical stopper to set precise forming limits on heavy-gauge materials, ensuring repeatable results across high-volume cycles.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX55-20S the Right Cylinder?
Select this 200 mm bore cylinder when an application demands extreme force (up to 15708 N at 0.5 MPa) alongside a short, finely-tunable stroke. If you need slightly less force, stepping down to the 160 mm bore provides 10053 N of push force at 0.5 MPa. The adjustable rear stopper on this SAIJ model is perfect for machine setups requiring variable end-stops during product changeovers, whereas a fixed-stroke SAI cylinder is better suited for repetitive, single-dimensional tasks.
Remember that the rear adjuster acts solely as a mechanical travel stop; it does not lock or hold the load without live air pressure. For fail-safe load-holding, consider the SAIL or BSAI series. To match this exact configuration, specify the 200 mm bore, 55 mm stroke, 20 mm adjustment, PT port thread, SUS420J2 rod material, and the -S magnet option. Because the stroke is short, side-loading is less of a concern, but the heavy 40 mm rod and M36x2 thread handle substantial side loads if they occur.
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 SAIJ200AX55-20S FAQ
At a 0.5 MPa operating pressure, this 200 mm bore cylinder generates 15708 N of push force and 15080 N of pull force. At the maximum 1.0 MPa pressure, it can deliver up to 3204 kgf.
The nominal stroke is 55 mm, but the rear adjuster allows you to shorten the effective travel by up to 20 mm. This provides an adjustable usable stroke window of 35 to 55 mm for fine-tuning end positions.
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