Airtac SAIJ200 Adjustable Cylinder SAIJ200AX425-30
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX425-30 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 425mm 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
- Stroke425 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX425-30
The AirTAC SAIJ200X425-30 is a double-acting ISO 15552 profile cylinder engineered for heavy-duty applications, delivering a substantial 15708N of push force at 0.5 MPa. It features a 425mm nominal stroke paired with a rear mechanical adjuster that allows you to fine-tune the effective travel within a 395-425mm window. This built-in adjustability eliminates the need to swap cylinders or bolt on external stops during product changeovers.
Equipped with a SUS420J2 stainless steel rod for superior corrosion resistance, this model omits the -S magnet option. The extruded aluminum barrel includes sensor grooves on both sides, and the rear stopper functions strictly as a travel end-deceleration device, not a load-holding lock.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX425-30 Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX425-30 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 425 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 SAIJ200AX425-30
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×425 | 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 SAIJ200AX425-30 Is Used
Heavy Press Tuning
Dial in the exact 395-425mm end position during heavy press commissioning without swapping out the entire cylinder.
Product Size Changeover
Quickly adapt a conveyor diverter stroke by up to 30mm to accommodate different large-scale product dimensions on the line.
Variable End Stops
Establish precise mechanical end stops for heavy machinery setups where external stopper bolts are impractical to mount.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX425-30 the Right Cylinder?
Selecting this 200mm bore cylinder is appropriate when your process demands up to 15708N of push force at 0.5MPa, stepping up from a 160mm bore that provides 10053N. The 30mm adjustment window is ideal for machinery requiring precise end-position tuning at commissioning without changing the ISO 15552 mounting footprint. Because the 425mm stroke is relatively long, an external guide is recommended to manage side loads.
For a direct ISO 15552 replacement match, ensure you specify the 200mm bore, 425mm stroke, PT tapered port threads, and the appropriate mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2). Note that the rear adjuster and air cushions only set the travel end; they do not hold the load without live air. For positive load-holding, consider an external rod lock or the AirTAC BSAI clamp-lock series.
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 SAIJ200AX425-30 FAQ
At 0.5 MPa operating pressure, this 200mm bore cylinder provides 15708N of push force and 15080N of pull force. At the maximum 1.0 MPa pressure, it achieves a maximum push force of 3204 kgf.
The rear adjuster screw allows you to shorten the 425mm nominal stroke by up to 30mm, providing an effective travel window of 395-425mm. This stopper only sets the travel end and does not lock the load without continuous air pressure.
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