Airtac Adjustable Cylinder SAIJ32 SAIJ32AX185-50
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32AX185-50 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø32mm bore and 185mm stroke, G1/8 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ32 mm
- Stroke185 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable, 27 mm
About the Airtac Adjustable Cylinder SAIJ32 SAIJ32AX185-50
The AirTAC SAIJ32X185-50 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a nominal 185 mm stroke that can be dialed back by up to 50 mm, yielding a usable travel window of 135 to 185 mm for precise end-position tuning during commissioning. Built with a 32 mm bore, it delivers 402 N of push force at 0.5 MPa and operates at speeds between 30 and 800 mm/s.
This variant utilizes a SUS420J2 stainless steel piston rod for improved corrosion resistance and features PT tapered port threads with a G1/8 connection. The extruded aluminum barrel includes sensor grooves on both sides, allowing for the direct mounting of CMSE or DMSE switches if a magnet is added later. The rear adjuster acts purely as a mechanical stop to set the travel end and does not hold the load without live air pressure.
Airtac Adjustable Cylinder SAIJ32 SAIJ32AX185-50 Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32AX185-50 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø32 mm |
| Stroke | 185 mm |
| Acting type | Double acting |
| Port size | G1/8 |
| Rod thread | M10×1.25 |
| 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 – 800 mm/s |
| Cushion | Adjustable, 27 mm |
| Max stroke | Up to 1000 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 (Ø32mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 346 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac Adjustable Cylinder SAIJ32 SAIJ32AX185-50
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 32 | 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 Adjustable Cylinder SAIJ32 SAIJ32AX185-50 Is Used
End-Stop Calibration
Dial in the exact 135-185 mm travel distance during machine commissioning to perfectly seat components without adding external shims.
Product Changeover
Quickly adjust the rear stopper by up to 50 mm to accommodate different product sizes on a packaging line without changing the cylinder.
Light Assembly Positioning
Leverage the 402 N push force at 0.5 MPa for precise, repeatable positioning of small parts where fixed stroke cylinders fall short.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32AX185-50 the Right Cylinder?
Choose this 32 mm bore adjustable-stroke cylinder when your application requires variable end-stops or frequent product changeovers without swapping the physical cylinder. If your setup demands higher thrust, stepping up to the 40 mm bore increases push force to 628 N at 0.5 MPa. Conversely, if the 135-185 mm adjustable window is excessive, a smaller adjustment code like -20 provides finer tuning over a 165-185 mm range.
When integrating this model, note that the rear adjuster is a travel stop, not a locking mechanism; for load-holding without continuous air pressure, consider an external pilot-operated check valve or a SAIL locking cylinder. To match this exact replacement, specify a 32 mm bore, 185 mm stroke, 50 mm adjustment range, PT port thread, and the SUS420J2 rod material. Since the stroke is under 300 mm, side-load stress is minimal, but external guiding remains recommended for optimal rod bearing life.
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 Adjustable Cylinder SAIJ32 SAIJ32AX185-50 FAQ
At 0.5 MPa operating pressure, this 32 mm bore cylinder provides 402 N of push force and 345 N of pull force. At 0.7 MPa, the push force increases to 563 N.
The rear adjuster acts as a mechanical stop that allows you to shorten the effective stroke from the nominal 185 mm down to 135 mm. It sets the travel end but does not lock the load without live air pressure.
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