Airtac SAIJ200 Adjustable Cylinder SAIJ200AX425-50S
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX425-50S 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 SAIJ200AX425-50S
The AirTAC SAIJ200X425-50-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to dial back the nominal 425 mm travel by up to 50 mm, creating a precise 375-425 mm usable window for product changeovers. Built with a SUS420J2 stainless steel rod (option A) and a PT tapered port, it delivers exceptional thrust, generating 21991 N of push force and 15080 N of pull force at 0.7 MPa. The extruded aluminum barrel includes sensor grooves on both sides, and because this SKU includes a magnet (-S), it supports AirTAC CMSE reed and DMSE electronic solid-state switches for exact end-of-stroke detection.
This 200 mm bore actuator uses a robust M36x2 rod thread and features 50 mm of adjustable pneumatic cushioning at both ends to manage heavy kinetic energy. The rear adjuster acts purely as a mechanical stop to set the travel endpoint, meaning it does not lock or hold the load without live air pressure. For applications requiring true load-holding without continuous air, you should specify an SAIL air-released lock, a BSAI clamp-lock, or an external rod lock.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX425-50S Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX425-50S |
|---|---|
| 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 SAIJ200AX425-50S
| 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 SAIJ200AX425-50S Is Used
Heavy Press Fit Tuning
Dial in the exact 375-425 mm insertion depth for heavy press-fit assemblies during commissioning, ensuring precise end positions without machining custom spacers.
Product Size Changeover
Adapt a single high-force actuator to multiple product lengths on a production line by adjusting the rear stopper up to 50 mm during format changeovers.
Variable End-Stop Setup
Set variable retract end-positions for large material handling gates, using the 21991 N of thrust at 0.7 MPa to move heavy payloads reliably.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX425-50S the Right Cylinder?
Choose this 200 mm bore model when your application requires extreme force, as it provides up to 21991 N of push force at 0.7 MPa, which is significantly higher than the 14074 N generated by the neighboring 160 mm bore size. The adjustable-stroke design is ideal for machine setups requiring fine end-position tuning during commissioning, allowing you to vary the end-stop by 50 mm without swapping the cylinder or adding external stops. When matching an ISO 15552 replacement, verify the 425 mm stroke, 50 mm adjustment, PT port thread, and the -S magnet requirement.
Because this cylinder features a 425 mm stroke, the long unsupported rod travel means you must account for side loads; despite the large 40 mm rod diameter and M36x2 thread providing high structural rigidity, an external guide rail is necessary to prevent rod binding and premature seal wear. The mounting interface supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 attachments, omitting the FB, CA, CB, and CR styles. Operating speed is 30-500 mm/s.
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 SAIJ200AX425-50S FAQ
At 0.7 MPa operating pressure, this 200 mm bore cylinder provides 21991 N of push force and 15080 N of pull force. At its maximum rated pressure of 1.0 MPa, it can deliver up to 3204 kgf of push force.
The rear adjuster screw acts as a mechanical stop that lets you shorten the 425 mm nominal stroke by up to 50 mm, giving a usable travel window of 375-425 mm. It is a travel stop for fine-tuning end positions, not a lock, and will not hold the load without live air pressure.
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