Airtac SAIJ200 Adjustable Cylinder SAIJ200AX250-50S
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX250-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 250mm 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
- Stroke250 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX250-50S
The AirTAC SAIJ200X250-50-S is a double-acting, single-rod ISO 15552 profile cylinder engineered for heavy-duty tasks. It integrates a rear stroke adjuster that permits you to fine-tune the end-of-travel position, providing a usable window from 200 to 250 mm for exact product changeovers. Delivering a robust 15708 N push force at 0.5 MPa, this 200 mm bore unit is built to handle substantial loads.
This variant features a SUS420J2 stainless steel rod for enhanced corrosion resistance and includes a magnet for CMSE and DMSE sensors. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch placement. Operating at 30-500 mm/s, it utilizes PT tapered ports and G3/4 thread connections to match its high flow requirements.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX250-50S Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX250-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 250 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 SAIJ200AX250-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×250 | 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 SAIJ200AX250-50S Is Used
Heavy Press Tuning
Dial in the exact 200 to 250 mm press depth during commissioning to accommodate different material thicknesses without changing the tooling setup.
Product Line Changeover
Quickly reset the rear stopper for variable end positions when switching the manufacturing line to a new product family size.
Variable End Stops
Use the 50 mm adjustment window to fine-tune the retraction point on the fly, ensuring precise alignment in automated assembly machinery.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX250-50S the Right Cylinder?
Selecting this 200 mm bore model is ideal when your application requires the maximum standard thrust, pushing 15708 N at 0.5 MPa (or 21991 N at 0.7 MPa). If your force requirements are lower, stepping down to a 160 mm bore yields 10053 N at 0.5 MPa, which may offer a more compact and economical footprint. The adjustable stroke is chosen over a fixed SAI cylinder when you need variable end-stops during machine setup without physically swapping the actuator or adding external stops.
For ISO 15552 replacement matching, verify the 200 mm bore, 250 mm stroke, 50 mm adjustment range, PT port thread, and the -S magnet option. Mounting options include the reduced SAIJ set: Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, CR). The rear adjuster acts solely as a travel stop and does not hold the load without live air; for true load-holding, consider the SAIL or BSAI series. Although the 25 mm rod and M36x2 thread handle high side loads, any stroke over 300 mm would require an external guide.
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 SAIJ200AX250-50S FAQ
At a 0.5 MPa operating pressure, this 200 mm bore cylinder provides 15708 N of push force and 15080 N of pull force. At 0.7 MPa, the push force increases to 21991 N.
The rear adjuster screw lets you shorten the nominal 250 mm stroke by up to 50 mm, creating a usable travel window between 200 and 250 mm. This stopper decelerates the travel end but does not lock the load without continuous air pressure.
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