Airtac Adjustable Cylinder SAIJ32 SAIJ32BX400-50
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32BX400-50 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 SAIJ32BX400-50
The AirTAC SAIJ32X400-50 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to trim the effective travel back by up to 50 mm, creating a 350-400 mm usable stroke window. It delivers 402 N of push force and 345 N of pull force at 0.5 MPa, making it suitable for lighter-duty positioning tasks. This configuration uses a SUS304 stainless steel rod (option B) for enhanced corrosion resistance and a PT tapered port thread.
Because the adjustment mechanism acts purely as a mechanical stop at the retract end, it does not hold the load without live air pressure. The extruded aluminum barrel includes sensor grooves on both sides for mounting AirTAC CMSE reed or DMSE electronic sensors. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, omitting the FB, CA, CB, and CR styles found on some other ISO cylinders.
Airtac Adjustable Cylinder SAIJ32 SAIJ32BX400-50 Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32BX400-50 |
|---|---|
| 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 SAIJ32BX400-50
| 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 SAIJ32BX400-50 Is Used
Machine Setup & Changeover
Dial in the exact 350-400 mm retract position during line changeovers without machining new hard stops or swapping the cylinder.
Variable End-Stop Positioning
Adjust the stroke end-point on the fly to accommodate varying product sizes moving down a packaging conveyor.
Light-Duty Clamping
Provides 402 N of push force at 0.5 MPa for precision clamping tasks where the final position needs fine-tuning at commissioning.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX400-50 the Right Cylinder?
Choose this 32 mm bore cylinder when your application requires a 350-400 mm travel window and up to 402 N of thrust at 0.5 MPa. If your setup needs greater force, stepping up to the 40 mm bore provides 628 N of push force at the same pressure. The adjustable stroke is selected over a fixed SAI model when you need to fine-tune the end position during commissioning or product changeover without swapping the cylinder or adding external stops. For load-holding without live air pressure, consider the SAIL or BSAI series instead, as the SAIJ adjuster is a travel stop, not a lock.
With a 400 mm stroke on a 32 mm bore, the 12 mm rod and M10x1.25 rod thread provide a robust connection, but the long unsupported stroke length means an external guide is recommended to prevent excessive side-loading. This cylinder is dimensionally interchangeable per ISO 15552 and operates at speeds between 30 and 800 mm/s.
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 SAIJ32BX400-50 FAQ
At 0.5 MPa, this 32 mm bore cylinder provides 402 N of push force and 345 N of pull force. It operates at speeds between 30 and 800 mm/s.
The rear adjuster acts as a mechanical stop that lets you shorten the 400 mm nominal stroke by up to 50 mm, giving a usable travel window of 350-400 mm. It only sets the end position and does not lock the load without air pressure.
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