Airtac SAIJ200 Adjustable Cylinder SAIJ200AX185-40S
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX185-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø200mm bore and 185mm 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
- Stroke185 mm
- Port sizeG3/4
- Acting typeDouble acting
- Rod threadM36×2
- CushionAdjustable, 50 mm
About the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX185-40S
The AirTAC SAIJ200X185-40-S is a double-acting ISO 15552 profile cylinder engineered with a rear stroke adjuster, allowing you to dial back the nominal 185 mm travel by up to 40 mm. This yields a precise 145-185 mm usable window, enabling exact end-position tuning at commissioning without swapping the cylinder or adding external stops. As the largest standard bore, it delivers immense thrust, pushing 15708 N and pulling 15080 N at 0.5 MPa, scaling up to 28274 N at 0.9 MPa.
This variant is equipped with a SUS420J2 stainless steel rod (code A) for superior corrosion resistance and includes a magnet (-S) for position sensing with AirTAC CMSE reed and DMSE electronic switches. The extruded aluminum barrel features sensor grooves on both sides, and the G3/4 PT tapered ports manage high airflow for the 30-500 mm/s speed range. The rear adjuster acts purely as a travel stop to set deceleration, not a lock, so live air is required to hold the load.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX185-40S Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX185-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø200 mm |
| Stroke | 185 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 SAIJ200AX185-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 200 | Bore size in mm. |
| ×185 | 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 SAIJ200AX185-40S Is Used
Heavy Press Tuning
Dial in the exact 145-185 mm end-position during heavy press commissioning to accommodate varying material thicknesses without re-mounting the cylinder.
Product Changeover
Quickly adjust the retract stop for different heavy-assembly sizes on a shared production line, utilizing the 40 mm trim range to switch fixtures rapidly.
Large Mold Handling
Position large molds precisely using the 15708 N push force at 0.5 MPa, relying on the SUS420J2 rod to resist corrosion in humid industrial environments.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX185-40S the Right Cylinder?
Selecting this 200 mm bore cylinder is appropriate when your application requires maximum standard thrust, as stepping down to a 160 mm bore drops your 0.5 MPa push force to 10053 N. The 40 mm adjustable stroke is ideal for product changeovers on heavy machinery, letting you fine-tune the retract end-position on the fly instead of machining external stopper blocks. For any stroke near or over 300 mm, you would normally need an external guide to prevent rod side-loading, but this 185 mm travel remains well within the 40 mm rod's self-supporting capacity.
To match this ISO 15552 footprint, ensure your setup accommodates the G3/4 PT ports and the reduced SAIJ mounting set, which includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR). Because the rear adjuster only trims travel and the air cushions decelerate, neither will hold a load without live air pressure. If your fixture needs fail-safe load holding, step up to an AirTAC SAIL pneumatic lock, a BSAI clamp-lock, or an external rod lock.
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 SAIJ200AX185-40S FAQ
At 0.5 MPa operating pressure, this 200 mm bore cylinder provides 15708 N of push force and 15080 N of pull force. At 0.9 MPa, the push force increases to 28274 N.
The rear adjuster screw allows you to shorten the nominal 185 mm stroke by up to 40 mm, creating a 145-185 mm usable travel window. It functions as a mechanical stop to tune the end position and does not lock the load without live air pressure.
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