Airtac SAIJ200 Adjustable Cylinder SAIJ200AX300-20S
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX300-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 300mm 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
- Stroke300 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX300-20S
The AirTAC SAIJ200X300-20-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, providing a usable travel window of 280 to 300 mm. It delivers immense thrust, generating 15708N of push force and 15080N of pull force at 0.5 MPa, making it suitable for heavy-duty operations. The barrel features sensor grooves on both sides, and this -S variant includes a magnet for use with CMSE reed and DMSE electronic solid-state switches.
This model features a SUS420J2 stainless steel rod (material code A) and PT tapered port threads (G3/4). The rear adjuster acts purely as a mechanical stop to fine-tune the end position during commissioning; it does not lock or hold the load without live air pressure. For load-holding requirements, an external pilot-operated check valve or an AirTAC BSAI clamp-lock cylinder is required.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX300-20S Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX300-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 300 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 SAIJ200AX300-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×300 | 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 SAIJ200AX300-20S Is Used
Heavy Press Tuning
Dial in the exact 280-300mm end-stop during heavy press commissioning to accommodate material thickness variations without swapping cylinders.
Production Line Changeover
Quickly adjust the retract end-position by up to 20mm during product size changes on the line, minimizing downtime between runs.
Variable End-Stop Setup
Use the rear mechanical stopper to fine-tune the travel window on large actuators, ensuring precise positioning of heavy 15708N loads.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX300-20S the Right Cylinder?
Selecting this 200 mm bore cylinder is appropriate when your application requires up to 15708N of push force at 0.5 MPa, stepping up from a 160 mm bore that provides 10053N. The adjustable 280-300 mm travel window is chosen over a fixed-stroke SAI cylinder when you need to dial in the exact end position during machine setup or product changeover without adding external stops. Because the nominal stroke is 300 mm, an external guide is recommended to manage side loads and prevent rod deflection over this extended travel.
When replacing an ISO 15552 cylinder, match the 200 mm bore, 300 mm stroke, 20 mm adjustment range, G3/4 PT ports, and the -S magnet requirement. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, omitting the FB, CA, CB, and CR mounts.
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 SAIJ200AX300-20S FAQ
At 0.5 MPa operating pressure, this 200 mm bore cylinder provides 15708N of push force and 15080N of pull force. At the maximum 1.0 MPa pressure, it can deliver up to 3204 kgf.
The rear adjusting screw allows you to shorten the effective stroke by up to 20 mm, creating a 280 to 300 mm usable travel window. This stopper fine-tunes the end position at commissioning but does not hold the load without live air pressure.
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