Airtac Adjustable Cylinder SAIJ32 SAIJ32BX70-40
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32BX70-40 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 SAIJ32BX70-40
The AirTAC SAIJ32X70-40 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the 70 mm nominal stroke by up to 40 mm. This yields a highly flexible 30-70 mm usable travel window, perfect for dialing in exact end positions during commissioning without swapping hardware. In the compact 32 mm bore class, it delivers 402 N of push force and 345 N of pull force at 0.5 MPa.
This SKU features a SUS304 stainless steel rod for superior corrosion resistance and uses PT tapered port threads with a G1/8 connection. The extruded aluminum barrel includes sensor grooves on both sides, though this specific configuration omits the magnet, meaning CMSE or DMSE electronic switches cannot be used without a rod magnet upgrade. The rear adjuster acts purely as a mechanical stop to set the travel end and does not hold the load without live air pressure.
Airtac Adjustable Cylinder SAIJ32 SAIJ32BX70-40 Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32BX70-40 |
|---|---|
| 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 SAIJ32BX70-40
| 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 SAIJ32BX70-40 Is Used
Product Changeover
Quickly adapt the end-of-stroke position from 30 to 70 mm to accommodate different product lengths on a packaging line without changing the cylinder.
Prototype Dial-In
Ideal for R&D setups where the exact retraction point needs micro-adjustments during the commissioning of new tooling.
Variable End Stops
Provides a mechanical hard stop for delicate picking operations, allowing operators to trim the 70 mm stroke precisely to the fixture.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX70-40 the Right Cylinder?
Choose this 32 mm bore when your application requires around 402 N of thrust at 0.5 MPa; if you need less force, a 25 mm bore is not standard in this series, but if you need significantly more, stepping up to the 40 mm bore yields 628 N. The 40 mm adjustment range on a 70 mm stroke is exceptionally wide, making this model ideal for prototyping or machines that process varying product sizes on the same line. Because the stroke is under 300 mm, side-load stress on the 12 mm rod is manageable, but external guides are still recommended for heavy lateral loads.
When specifying a replacement, verify the 70 mm stroke, 40 mm adjuster, PT port thread, and the absence of a magnet. Remember that the rear stopper only trims the retract position; for load-holding without live air, select a SAIL or BSAI variant instead. This profile cylinder uses a reduced mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2) and is dimensionally interchangeable with ISO 15552 cylinders, omitting FB, CA, CB, and CR mounts.
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 SAIJ32BX70-40 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 up to 724 N of push force at 0.9 MPa.
The rear adjuster screw allows you to shorten the 70 mm nominal stroke by up to 40 mm, creating a usable travel window of 30 to 70 mm. It functions as a mechanical stop and does not lock the load without continuous air pressure.
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