Airtac Adjustable Cylinder SAIJ32 SAIJ32BX400-40
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32BX400-40 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 SAIJ32BX400-40
The AirTAC SAIJ32X400-40 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to trim the nominal 400 mm travel back by up to 40 mm, creating a precise 360-400 mm usable window. Delivering 402 N of push force at 0.5 MPa, it is built with a SUS304 stainless steel rod for superior corrosion resistance. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting.
This model features a PT tapered G1/8 port and a 12 mm rod with an M10x1.25 thread. Because the 400 mm stroke is relatively long for a 32 mm bore, the rod and thread should not be relied upon to absorb heavy side loads; an external guide rail is recommended for unsupported lengths. The rear adjuster acts purely as a travel stop for commissioning flexibility and does not hold the load without live air pressure.
Airtac Adjustable Cylinder SAIJ32 SAIJ32BX400-40 Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32BX400-40 |
|---|---|
| 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 SAIJ32BX400-40
| 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 SAIJ32BX400-40 Is Used
Machine Changeover
Dial in the 360-400 mm travel window during product size transitions to perfectly reposition end-stops without changing the cylinder.
End-Position Tuning
Fine-tune the retract stroke at commissioning using the rear adjuster to achieve exact positioning without adding external stops.
Adjustable Diverting
Set precise retract distances for conveyor sorting arms, allowing quick adjustments for varying package dimensions on the line.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX400-40 the Right Cylinder?
Choose this 32 mm bore adjustable-stroke cylinder when your machine setup requires variable end-stops or fine-tuning during product changeovers without physically swapping out a fixed-stroke SAI cylinder. If your application demands greater thrust, stepping up to the 40 mm bore yields 628 N of push force at 0.5 MPa.
For an exact ISO 15552 replacement, match the 32 mm bore, 400 mm stroke, 40 mm adjustment, PT G1/8 port, and your required mounting choice from the SAIJ subset (Basic, FA, LB, TC, FTC, TCM1, TCM2). Note that this SAIJ variant omits the FB, CA, CB, and CR mounts. If your process requires true load-holding without continuous air pressure, consider the SAIL or BSAI series instead, as the SAIJ adjuster is a stop, not a lock.
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 SAIJ32BX400-40 FAQ
At 0.5 MPa operating pressure, this 32 mm bore cylinder provides 402 N of push force and 345 N of pull force. It can reach a maximum push force of 724 N at 0.9 MPa.
The rear adjuster screw allows you to shorten the 400 mm nominal stroke by up to 40 mm, giving a usable travel window of 360-400 mm. This stopper fine-tunes the end position but does not lock or hold the load without live air pressure.
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