Airtac Adjustable Cylinder SAIJ32 SAIJ32BX240-40S
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32BX240-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø32mm bore and 240mm 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
- Stroke240 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable, 27 mm
About the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX240-40S
The AirTAC SAIJ32X240-40-S is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a 240 mm nominal stroke that can be dialed back by up to 40 mm, giving you a usable travel window of 200 to 240 mm for precise end-position tuning at commissioning. In the 32 mm bore class, it delivers 402 N of push force and 345 N of pull force at 0.5 MPa.
This variant includes a SUS304 stainless steel rod for superior corrosion resistance and a magnet for position sensing with CMSE reed or DMSE electronic switches. It uses PT tapered port threads (G1/8) and relies on variable air cushions at both ends to decelerate the load. The rear adjuster acts purely as a mechanical stop and does not hold the load without live air pressure.
Airtac Adjustable Cylinder SAIJ32 SAIJ32BX240-40S Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32BX240-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø32 mm |
| Stroke | 240 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 SAIJ32BX240-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×240 | 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 SAIJ32BX240-40S Is Used
Machine Changeover
Dial in the exact 200 to 240 mm end-position during product size changeovers without adding external stopper blocks to the machine frame.
End-Position Trimming
Fine-tune the retract stroke by up to 40 mm during commissioning to perfect the seating of a 32 mm bore actuator in a delicate assembly process.
Variable Length Diverter
Adjust the travel window on the fly for a pneumatic diverter gate handling different package lengths on a packaging line.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX240-40S the Right Cylinder?
Select this 32 mm bore adjustable cylinder when your machine setup requires variable end-stops or frequent product changeovers without swapping the physical cylinder. If your application demands greater thrust, stepping up to the 40 mm bore yields 628 N of push force at 0.5 MPa. Because the stroke is 240 mm, which is 8 times the bore diameter, you should use an external guide rail to support the load and prevent excessive side-load wear on the rod seals.
For a direct ISO 15552 replacement, match the 32 mm bore, 240 mm nominal stroke, 40 mm adjustment range, PT G1/8 port, and the -S magnet requirement. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 brackets, omitting the FB, CA, CB, and CR options. If you need true load-holding without live air, use a SAIL air-released lock or BSAI clamp-lock cylinder instead of relying on the adjuster.
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 SAIJ32BX240-40S FAQ
At 0.5 MPa operating pressure, the 32 mm bore 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 lets you shorten the effective travel from the 240 mm nominal stroke down to 200 mm. This mechanical stop sets the retract end position but does not lock the load without continuous air pressure.
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