Airtac SAIJ200 Adjustable Cylinder SAIJ200X425-50
The AirTAC SAIJ200 Adjustable Cylinder SAIJ200X425-50 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 SAIJ200X425-50
The AirTAC SAIJ200X425-50 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. By turning the external stopper screw, you can shorten the effective travel by up to 50 mm, creating a usable movement window of 375 to 425 mm for this 425 mm nominal stroke. This mechanism allows precise end-position tuning at commissioning or during product changeover without swapping out the entire actuator.
The 40 mm carbon steel rod and M36x2 thread provide high structural rigidity, while the 50 mm variable air cushions at both ends manage impact deceleration. Note that the rear adjuster acts only as a travel stop and does not hold the load without live air pressure; for fail-safe load holding, consider the SAIL or BSAI series.
Airtac SAIJ200 Adjustable Cylinder SAIJ200X425-50 Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200X425-50 |
|---|---|
| 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 SAIJ200X425-50
| 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 SAIJ200X425-50 Is Used
Large Press Fine-Tuning
Dial in the exact 375 to 425 mm retract distance on heavy stamping presses to accommodate varying material thicknesses without changing the cylinder.
Heavy Conveyor Changeover
Adjust the end stop rapidly during product line changeovers to set new heavy-actuator positions, minimizing machine downtime.
Large Assembly Positioning
Set precise end-of-stroke limits for positioning large industrial components during automated assembly operations.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200X425-50 the Right Cylinder?
Choose this 200 mm bore if your application demands extreme thrust, such as 21991 N at 0.7 MPa, and you need to dial in the exact retract distance on the fly. If your force requirements are lower, stepping down to a 160 mm bore yields 18095 N at 0.9 MPa, which might save space and air consumption. The SAIJ200X425-50 uses a PT tapered port thread and supports a reduced mounting subset of Basic, FA, LB, TC, FTC, TCM1, and TCM2, deliberately omitting FB, CA, CB, and CR brackets.
Because this cylinder features a 425 mm stroke, the 40 mm rod will experience significant leverage forces over that distance. Even with the robust M36x2 thread, an external guide rail is strongly recommended to prevent excessive side-loading and premature seal wear. The standard carbon steel rod and TPU seals handle standard operating temperatures, while the dual-side sensor grooves allow easy mounting of position switches if needed later.
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 SAIJ200X425-50 FAQ
The maximum thrust is 3204 kgf at 1.0 MPa.
The rear adjuster screw acts as a mechanical stopper that can trim back the nominal 425 mm stroke by up to 50 mm. This creates an adjustable travel window between 375 mm and 425 mm, allowing you to fine-tune the end position without adding external stops.
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Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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