Airtac Adjustable Cylinder SAIJ32 SAIJ32BX50-40
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32BX50-40 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø32mm bore and 50mm 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
- Stroke50 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable, 27 mm
About the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX50-40
The AirTAC SAIJ32X50-40 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It delivers 402N of push force and 345N of pull force at 0.5 MPa, utilizing a 12mm rod with an M10x1.25 thread. By incorporating a 40mm adjustment mechanism on a 50mm nominal stroke, this unit provides a usable travel window of 10 to 50mm, enabling precise end-position tuning directly at commissioning without external stops.
This variant features a SUS304 stainless steel rod for enhanced corrosion resistance and includes PT tapered port threads (G1/8). The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE reed or DMSE electronic solid-state switches. Remember that the rear adjuster acts strictly as a travel stop to decelerate the piston, not as a load-holding lock; true load holding without live air requires a SAIL or BSAI cylinder.
Airtac Adjustable Cylinder SAIJ32 SAIJ32BX50-40 Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32BX50-40 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø32 mm |
| Stroke | 50 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 SAIJ32BX50-40
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×50 | 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 SAIJ32BX50-40 Is Used
Machine Setup & Changeover
Dial in the exact end-stop during product size changeovers on a packaging line, trimming the 50mm stroke down to a 10mm travel window without adding external stopper blocks.
Variable Positioning
Fine-tune the retract end-position during machine commissioning to align a 402N push tool perfectly, adjusting the stroke by up to 40mm to compensate for mechanical tolerances.
Lab & Test Fixtures
Use the SUS304 stainless steel rod in test rigs requiring precise, repeatable travel distances, easily adjusting the cylinder's effective stroke between 10mm and 50mm for varying test parameters.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX50-40 the Right Cylinder?
Selecting the SAIJ32X50-40 is ideal when an application demands a compact 32mm bore but requires variable end-stops for product changeovers or setup fine-tuning. If your process needs less force, stepping down is not an option within this frame size, but if you need significantly more thrust, a 40mm bore provides 628N at 0.5 MPa. Because this model uses a 50mm nominal stroke trimmed down by up to 40mm, you can achieve highly refined positioning without swapping physical cylinders.
As a direct ISO 15552 interchangeable replacement, ensure your setup matches the 32mm bore, 50mm stroke, 40mm adjustment, PT G1/8 port, and the SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2). This reduced mounting set intentionally omits FB, CA, CB, and CR accessories. The 12mm SUS304 rod handles moderate side loads, though any long unsupported stroke still requires an external guide.
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 SAIJ32BX50-40 FAQ
At 0.5 MPa operating pressure, the SAIJ32X50-40 provides 402N of push force and 345N of pull force. It can reach a maximum of 82 kgf at 1.0 MPa.
The rear adjuster screw acts as a mechanical stop that trims the effective travel. With a 50mm nominal stroke and a 40mm adjustment range, you can set the usable stroke anywhere from 10mm to 50mm. This adjuster only sets the travel end and does not lock the load without live air pressure.
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