Airtac Adjustable Cylinder SAIJ32 SAIJ32BX185-20
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32BX185-20 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 SAIJ32BX185-20
The AirTAC SAIJ32X185-20 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the nominal 185 mm travel by up to 20 mm. This creates a precise 165-185 mm usable window, enabling exact end-position tuning at commissioning without adding external stops. In the 32 mm bore class, it delivers 563 N of push force at 0.7 MPa and 345 N of pull force at 0.5 MPa.
This variant features a SUS304 stainless steel rod for superior corrosion resistance and uses PT tapered port threads. The extruded aluminum barrel includes sensor grooves on both sides for CMSE reed or DMSE electronic switches. It supports a mounting subset of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB and CA styles. Note that the rear adjuster acts purely as a travel stop and does not hold the load without live air pressure.
Airtac Adjustable Cylinder SAIJ32 SAIJ32BX185-20 Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32BX185-20 |
|---|---|
| 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 SAIJ32BX185-20
| 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 SAIJ32BX185-20 Is Used
End-Stop Calibration
Dial in the exact 165 to 185 mm retract position during machine setup without machining new spacer blocks.
Product Changeover
Quickly adjust the travel window to accommodate slightly different material lengths on the same production line.
Light Assembly
Leverage the 563 N push force at 0.7 MPa for precise, repeatable pressing and clamping operations.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX185-20 the Right Cylinder?
Choose this 32 mm bore adjustable-stroke cylinder when your application requires variable end-stops or frequent product changeovers, stepping down from a 40 mm bore (which provides 879 N push at 0.5 MPa) if your force requirements are modest. The rear screw mechanism allows you to fine-tune the retract position on the fly, which is far more efficient than swapping a fixed-stroke SAI cylinder. For exact ISO 15552 replacement, match the 32 mm bore, 185 mm stroke, 20 mm adjustment, PT ports, and the desired mounting and magnet options.
Because the 185 mm stroke is relatively short, side-loading is less of a concern than with longer travels, but the 12 mm rod and M10x1.25 thread still require alignment to prevent premature seal wear. If your machine loses air, this plain SAIJ cylinder will not hold its load; for fail-safe load holding, consider the SAIL pneumatic lock or BSAI clamp-lock 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 Adjustable Cylinder SAIJ32 SAIJ32BX185-20 FAQ
A rear stopper screw lets you shorten the effective stroke by up to 20 mm, providing a usable travel range of 165 to 185 mm. It acts as a mechanical stop to set the end position and does not function as a lock to hold the load without air pressure.
At 0.5 MPa, 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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Covers non-human-caused product damage.
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