Airtac Adjustable Cylinder SAIJ32 SAIJ32BX185-40
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32BX185-40 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 SAIJ32BX185-40
The AirTAC SAIJ32X185-40 is a double-acting, single-rod 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 40 mm, creating a precise 145-185 mm usable travel window for fine-tuning end positions during commissioning. Delivering 402 N of push force at 0.5 MPa, it handles light-duty positioning with ease.
This variant is equipped with a SUS304 stainless steel rod (code B) for superior corrosion resistance and features PT tapered port threads (G1/8). The extruded aluminum barrel includes sensor grooves on both sides, allowing you to add CMSE reed or DMSE electronic sensors if needed. The rear adjuster acts strictly as a mechanical stop to set the travel end, not as a lock to hold the load without live air pressure.
Airtac Adjustable Cylinder SAIJ32 SAIJ32BX185-40 Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32BX185-40 |
|---|---|
| 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 SAIJ32BX185-40
| 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 SAIJ32BX185-40 Is Used
Machine Changeover
Dial in the 145-185 mm stroke window during product size changes without physically swapping cylinders or adding spacer blocks.
End-Position Tuning
Fine-tune the retract end position at commissioning to achieve exact mechanical alignment using the rear stopper screw.
Light-Load Positioning
Utilize the 402 N push force to accurately push or divert light materials on a conveyor line with adjustable travel limits.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX185-40 the Right Cylinder?
Choose this 32 mm bore when an application requires 402 N of push force at 0.5 MPa but demands flexibility in the final end-stop position. If your setup requires less force, stepping down is not an option in this series, but stepping up to a 40 mm bore yields 628 N. The adjustable 145-185 mm window is perfect for machine changeovers, replacing the need to swap out a fixed-stroke SAI cylinder or bolt on external stops.
When replacing an ISO 15552 cylinder, match the 32 mm bore, 185 mm nominal stroke, 40 mm adjustment range, PT port threads, and your required mounting set. SAIJ supports Basic, FA, LB, TC, FTC, TCM1, and TCM2 mounts, explicitly omitting FB, CA, CB, and CR. Because the stroke is 185 mm, the 12 mm rod handles standard loads well, but always ensure external guiding for optimal side-load management.
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 SAIJ32BX185-40 FAQ
The rear adjuster allows you to shorten the effective travel by up to 40 mm. This creates a usable stroke window of 145 to 185 mm, letting you set the exact retract end position without changing the cylinder.
At 0.5 MPa operating pressure, it provides 402 N of push force and 345 N of pull force. At 0.7 MPa, the push force increases to 563 N.
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