Airtac SAIJ200 Adjustable Cylinder SAIJ200AX250-40S
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX250-40S 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 SAIJ200AX250-40S
The AirTAC SAIJ200X250-40-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the travel window from 210 to 250 mm. It delivers massive thrust, pushing 15708 N at 0.5 MPa and up to 28274 N at 0.9 MPa, making it ideal for heavy-duty press operations. The extruded aluminum barrel includes sensor grooves on both sides for straightforward position feedback.
This variant features a 40 mm SUS420J2 stainless steel rod with an M36x2 thread, providing high rigidity and excellent side-load resistance. Equipped with a magnet (-S), it supports CMSE reed and DMSE electronic sensors for precise switching. The rear adjuster acts purely as a travel stop for end-position tuning and does not hold the load without live air pressure.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX250-40S Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX250-40S |
|---|---|
| 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 SAIJ200AX250-40S
| 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 SAIJ200AX250-40S Is Used
Heavy-Duty Forming
Dial in the exact 210-250 mm travel window for stamping or forming tasks, ensuring precise end-stops during machine setup without external shims.
Product Changeover
Quickly adapt the cylinder's effective stroke for varying product sizes on the line, utilizing the 40 mm rear adjuster to switch profiles efficiently.
High-Force Pressing
Leverage the 28274 N push force at 0.9 MPa for heavy assembly presses, using the rear stopper to fine-tune the final position safely.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX250-40S the Right Cylinder?
Choose this 200 mm bore cylinder when your application requires maximum force, stepping up significantly from the 160 mm bore which provides 10053 N push force at 0.5 MPa. The 40 mm adjustment range is perfect for product changeovers, allowing you to dial in the exact end-stop without swapping out the entire cylinder or adding external stops. For load-holding requirements without continuous air pressure, this adjuster will not suffice; you should consider the SAIL or BSAI series instead.
When replacing an ISO 15552 cylinder, match the 200 mm bore, 250 mm stroke, 40 mm adjustment, PT tapered port thread, and the -S magnet. The mounting interface supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 configurations. Although the 250 mm stroke is below the 300 mm threshold requiring external guides, the robust 40 mm rod inherently handles substantial side loads. Operating speed ranges from 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 SAIJ200AX250-40S FAQ
The rear adjuster lets you shorten the nominal 250 mm stroke by up to 40 mm, creating a usable travel window of 210-250 mm. It acts as a mechanical stop for end-position tuning and does not lock or hold the load without live air.
At 0.5 MPa, it provides 15708 N of push force and 15080 N of pull force. At 0.9 MPa, the push force increases to 28274 N, making it suitable for high-force applications.
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