Airtac SAIJ200 Adjustable Cylinder SAIJ200AX185-40
The AirTAC Airtac SAIJ200 Adjustable Cylinder SAIJ200AX185-40 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 SAIJ200AX185-40
The AirTAC SAIJ200X185-40 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster, enabling a usable travel window of 145 to 185 mm. Delivering massive thrust, it pushes with 21991 N and pulls with 15080 N at 0.7 MPa. The piston rod is constructed from SUS420J2 stainless steel, offering enhanced durability and corrosion resistance compared to standard carbon steel.
This adjustable-stroke design allows operators to fine-tune the retract end position at commissioning or during product changeovers without swapping the entire cylinder. It features a G3/4 port and dual-side sensor grooves on the extruded aluminum barrel. Note that the rear adjuster functions strictly as a travel stop to set deceleration, not as a lock; it cannot hold a load without live air pressure.
Airtac SAIJ200 Adjustable Cylinder SAIJ200AX185-40 Technical Specifications
| Model | Airtac SAIJ200 Adjustable Cylinder SAIJ200AX185-40 |
|---|---|
| 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 SAIJ200AX185-40
| 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 SAIJ200AX185-40 Is Used
Heavy Press Tuning
Dial in the exact 145-185 mm retract distance during heavy press commissioning to accommodate varying material thicknesses without external stopper hardware.
Product Changeover
Quickly adjust the end-of-stroke position on a packaging line when switching to a different product size, leveraging the 40 mm adjustment range.
Large Assembly Jigs
Position heavy components precisely using the massive 21991 N push force at 0.7 MPa while fine-tuning the final placement via the rear stopper.
Is the Airtac SAIJ200 Adjustable Cylinder SAIJ200AX185-40 the Right Cylinder?
Select this 200 mm bore cylinder when your application requires the highest force class in the SAIJ range, such as heavy pressing or large load manipulation. If you need less thrust to save space and air consumption, stepping down to a 160 mm bore yields 14074 N of push force at 0.7 MPa. Choose the SAIJ adjustable variant over a fixed-stroke SAI when your machine setup demands a variable end-stop to dial in the exact 145-185 mm travel distance.
Because the 185 mm stroke is substantial, the 40 mm diameter rod and M36x2 thread provide rigidity, though an external guide is still recommended for heavy unsupported loads. This SKU uses PT tapered ports and omits the FB, CA, CB, and CR mounting options, utilizing a reduced set of Basic, FA, LB, TC, FTC, TCM1, and TCM2 brackets. For load-holding without live pressure, consider an external rod lock or the AirTAC SAIL or BSAI series instead.
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 SAIJ200AX185-40 FAQ
At 0.7 MPa operating pressure, this 200 mm bore cylinder provides a push force of 21991 N and a pull force of 15080 N. At the maximum 1.0 MPa pressure, it achieves a push force of 28274 N.
The rear adjuster acts as a mechanical stop that lets you trim the effective travel back from the 185 mm nominal stroke down to 145 mm. It sets the deceleration end-point but does not lock or hold the load without continuous air pressure.
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