Airtac Adjustable Cylinder SAIJ32 SAIJ32BX70-20
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32BX70-20 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 SAIJ32BX70-20
The AirTAC SAIJ32X70-20 is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a nominal 70 mm stroke that can be dialed back by up to 20 mm, yielding a precise 50-70 mm usable travel window for fine-tuning end positions during commissioning. 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 variant uses a SUS304 stainless steel rod for superior corrosion resistance and features PT tapered port threads (G1/8). The extruded aluminum barrel includes sensor grooves on both sides for flexible mounting of CMSE or DMSE switches, though this specific SKU is configured without a magnet. The rear adjuster acts strictly as a travel stop for deceleration and positioning, not as a lock, so live air pressure is required to hold the load.
Airtac Adjustable Cylinder SAIJ32 SAIJ32BX70-20 Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32BX70-20 |
|---|---|
| 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 SAIJ32BX70-20
| 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 SAIJ32BX70-20 Is Used
Product Changeover Positioning
Dial in the 50-70 mm travel window during line changeovers to accommodate slight variations in incoming product sizes without replacing the cylinder.
End-Stop Commissioning
Use the 20 mm rear adjustment screw to fine-tune the retract end-position precisely during machine setup, preventing the need for external mechanical shims.
Corrosive Environment Actuation
Leverage the SUS304 stainless steel rod for small-force clamping or ejecting tasks in washdown or mildly corrosive environments where carbon steel rods would fail.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX70-20 the Right Cylinder?
Choose this 32 mm bore when your application requires 402 N of thrust at 0.5 MPa but demands exact end-position tuning without adding external stops; if you need higher force, stepping up to the 40 mm bore yields 628 N of push force at the same pressure. The 20 mm adjustment range is ideal for product changeovers on a line, letting you shift the end-stop by up to 20 mm rather than swapping the entire cylinder for a fixed-stroke SAI unit. Because it is an ISO 15552 profile cylinder, it is dimensionally interchangeable with other ISO 15552 cylinders using the standard SAIJ mounting set (Basic, FA, LB, TC, FTC, TCM1, TCM2), omitting FB, CA, CB, and CR mounts. For any load-holding requirements without continuous air pressure, this cylinder is insufficient; you should specify a SAIL pneumatic lock, a BSAI clamp-lock, or an external rod lock 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 SAIJ32BX70-20 FAQ
At a 0.5 MPa operating pressure, this 32 mm bore cylinder provides 402 N of push force and 345 N of pull force. At the maximum 1.0 MPa pressure, it can deliver up to 82 kgf.
The rear adjuster screw acts as a mechanical stop that lets you shorten the 70 mm nominal stroke by up to 20 mm, creating a 50-70 mm usable travel window. It only sets the end position and does not lock the load without live air pressure.
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