Airtac Adjustable Cylinder SAIJ32 SAIJ32BX400-50S
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32BX400-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø32mm bore and 400mm 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
- Stroke400 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable, 27 mm
About the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX400-50S
The AirTAC SAIJ32X400-50-S is a double-acting ISO 15552 profile cylinder with a rear stroke adjuster, letting you dial back the 400 mm nominal travel by up to 50 mm for a precise 350-400 mm usable window. It delivers 402 N of push force at 0.5 MPa and uses a SUS304 stainless steel rod for superior corrosion resistance. The integrated magnet (-S) supports position sensing.
This bore size features a 12 mm rod, M10x1.25 rod thread, and PT tapered ports. The rear adjuster acts purely as a mechanical stop for end-position tuning during commissioning; it does not lock the load without live air. For load-holding without pressure, consider an external pilot-operated check valve or the SAIL series.
Airtac Adjustable Cylinder SAIJ32 SAIJ32BX400-50S Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32BX400-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø32 mm |
| Stroke | 400 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 SAIJ32BX400-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×400 | 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 SAIJ32BX400-50S Is Used
Changeover Calibration
Dial in the 350-400 mm travel window during product size changes without swapping the cylinder or adding external mechanical stops.
End-Position Trimming
Fine-tune the exact retract position at machine commissioning to compensate for mechanical tolerance stack-up using the rear screw.
Variable Diverting
Adjust the diverting stroke on the fly for different package sizes on a packaging line, relying on the 50 mm adjustment range.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX400-50S the Right Cylinder?
Choose this 32 mm bore when your application requires 402 N of push force at 0.5 MPa (or 563 N at 0.7 MPa) and you need variable end-stops for product changeovers. If you need less force, there is no smaller SAIJ bore; if you need significantly more thrust, step up to the 40 mm bore which provides 628 N push force at 0.5 MPa. The adjustable stroke is ideal when a fixed SAI cylinder would require external stop blocks to fine-tune travel.
Because the 400 mm stroke is relatively long for a 12 mm rod, you should use an external guide to prevent excessive side-loading and premature seal wear. This SAIJ configuration uses PT ports and includes the -S magnet for CMSE reed and DMSE solid-state sensors. It uses the reduced SAIJ mounting set: Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR).
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 SAIJ32BX400-50S FAQ
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.
A rear adjuster screw lets you shorten the 400 mm nominal stroke by up to 50 mm, creating a 350-400 mm usable travel window. It acts as a mechanical stop and does not hold the load without live air pressure.
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