Airtac Adjustable Cylinder SAIJ32 SAIJ32AX70-40S
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32AX70-40S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø32mm bore and 70mm 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
- Stroke70 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable, 27 mm
About the Airtac Adjustable Cylinder SAIJ32 SAIJ32AX70-40S
The AirTAC SAIJ32X70-40-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the 70 mm nominal travel by up to 40 mm. This creates a highly flexible 30-70 mm usable stroke window, perfect for applications requiring variable end-stops without swapping hardware. It delivers 402 N of push force at 0.5 MPa and features a SUS420J2 stainless steel rod for improved corrosion resistance.
This model includes a magnet (-S) for use with AirTAC CMSE reed and DMSE electronic sensors, which seat neatly into the sensor grooves on both sides of the extruded aluminum barrel. The PT tapered port threads match the standard G1/8 port size for this 32 mm bore. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2, deliberately omitting FB, CA, CB, and CR configurations.
Airtac Adjustable Cylinder SAIJ32 SAIJ32AX70-40S Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32AX70-40S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø32 mm |
| Stroke | 70 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 SAIJ32AX70-40S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×70 | 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 SAIJ32AX70-40S Is Used
Product Changeovers
Dial in the 30-70 mm travel window during format changes on packaging lines, avoiding the need to physically swap cylinders for different package sizes.
End-Stop Tuning
Fine-tune the retract position at machine commissioning using the rear screw, hitting exact sensor targets without adding external mechanical stops.
Light Assembly Positioning
Leverage the 402 N push force and precise stroke trimming to position delicate components accurately before a pressing operation.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32AX70-40S the Right Cylinder?
Choose this 32 mm bore when you need 402 N push force at 0.5 MPa with on-the-fly stroke tuning; step up to the 40 mm bore if your application requires 628 N of push force instead. The adjustable rear stopper is ideal for product changeovers, letting you fine-tune the end position at commissioning rather than machining external stops. For fixed travel without the adjuster, the standard SAI cylinder is the direct alternative.
When specifying an ISO 15552 replacement, match the 32 mm bore, 70 mm nominal stroke, 40 mm adjustment range, PT port threads, and the -S magnet. Note that the rear adjuster acts strictly as a travel stop and does not hold the load without live air; for positive load-holding without pneumatic pressure, consider the SAIL or BSAI cylinder series instead.
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 SAIJ32AX70-40S FAQ
The rear adjuster screw allows you to shorten the effective travel by up to 40 mm from the 70 mm nominal stroke, providing a usable 30-70 mm window. It acts as a physical stop to set the end position and is not a locking mechanism.
At 0.5 MPa operating pressure, it provides 402 N of push force and 345 N of pull force. At 0.7 MPa, the push force increases to 563 N.
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