Airtac SAIJ200 Adjustable Cylinder SAIJ200X425-75
The AirTAC SAIJ200 Adjustable Cylinder SAIJ200X425-75 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 interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ200 mm
- Stroke425 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200X425-75
It features a robust 40mm carbon steel rod and a PT G3/4 port to handle high airflow demands. The defining characteristic of this model is its integrated rear stroke adjuster, which allows you to dial back the nominal 425mm stroke by up to 75mm. This creates a precise usable travel window between 350mm and 425mm, enabling exact end-position tuning at commissioning without swapping out the entire cylinder.
Because the barrel is an extruded aluminum profile rather than a tie-rod design, it incorporates dual sensor grooves for straightforward switch mounting. While the variable air cushions at both ends manage deceleration, the rear screw acts strictly as a travel stop and does not hold the load without live air. For applications requiring position holding without pneumatic pressure, an external rod lock or a related AirTAC series like SAIL or BSAI would be required.
Airtac SAIJ200 Adjustable Cylinder SAIJ200X425-75 Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200X425-75 |
|---|---|
| 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 | 15080 N | 15080 N |
| 0.7 MPa | 21111 N | — |
| Max (@1.0 MPa) | 3075 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ200 Adjustable Cylinder SAIJ200X425-75
| 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 SAIJ200X425-75 Is Used
Heavy-Duty Press Tuning
Dial in the exact 350-425mm travel window during press commissioning to accommodate varying material thicknesses without adding external mechanical stops.
Product Changeover Diverter
Adjust the rear stopper on the fly to shift a heavy diverter arm's end position, accommodating different package sizes on a high-throughput line.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200X425-75 the Right Cylinder?
Conversely, if you need maximum clamping power, the 200mm bore yields up to 3204kgf at 1.0MPa. The adjustable stroke is chosen over a fixed SAI cylinder when you need on-the-fly mechanical fine-tuning for product changeovers or to dial in a precise 350-425mm travel distance during machine setup.
When replacing an ISO 15552 cylinder, match the 200mm bore, 425mm stroke, 75mm adjustment range, PT G3/4 port, and standard carbon steel rod. This model operates at 30-500mm/s and uses a reduced mounting set including Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. Because the 425mm stroke is relatively long, the 40mm rod and M36x2 thread provide excellent rigidity, but an external guide is still recommended to prevent excessive side-loading on the piston rod.
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 SAIJ200X425-75 FAQ
At its maximum 1.0MPa pressure, it delivers a peak push force of 3204kgf.
The rear adjuster screw acts as a mechanical stop that lets you shorten the effective travel from the 425mm nominal stroke down to 350mm. This allows precise end-position tuning at commissioning, but it functions only as a travel stop and does not lock the load without continuous air pressure.
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Standard models are processed and dispatched in 3-5 business days.
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