Airtac Adjustable Cylinder SAIJ32 SAIJ32AX70-20S
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32AX70-20S 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 SAIJ32AX70-20S
The AirTAC SAIJ32X70-20-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a usable travel window of 50 to 70 mm, allowing you to dial back the 70 mm nominal stroke by up to 20 mm during commissioning without adding external stops. In the 32 mm bore class, it delivers 402 N of push thrust and 345 N of pull thrust at 0.5 MPa.
This variant features a SUS420J2 stainless steel rod for improved corrosion resistance and includes a magnet (-S) for position sensing. The extruded aluminum barrel integrates sensor grooves on both sides for direct mounting of CMSE reed or DMSE electronic switches. The rear adjuster acts purely as a travel stop to fine-tune the end position; it does not hold the load without live air pressure.
Airtac Adjustable Cylinder SAIJ32 SAIJ32AX70-20S Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32AX70-20S |
|---|---|
| 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 SAIJ32AX70-20S
| 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 SAIJ32AX70-20S Is Used
Product Changeover
Quickly dial the stroke back from 70 mm to 50 mm when switching to a shorter part on the line, avoiding cylinder swaps.
End-Stop Tuning
Fine-tune the exact retracted position during machine setup using the 20 mm rear adjuster to perfect timing.
Light Assembly Push
Provides 402 N of push force at 0.5 MPa for pressing small bearings or electronic components into housings.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32AX70-20S the Right Cylinder?
Choose this 32 mm bore when your application requires 402 N of push force at 0.5 MPa. If you need less force, dropping to a 25 mm bore is an option, but stepping up to a 40 mm bore yields 628 N of push thrust. The adjustable stroke is ideal for product changeovers or fine-tuning end positions on the fly, whereas a fixed-stroke SAI cylinder requires exact travel dimensions upfront. For load-holding without continuous air pressure, this cylinder is insufficient; consider the SAIL (air-released lock) or BSAI (clamp-lock) series instead.
To replace this ISO 15552 cylinder, match the 32 mm bore, 70 mm nominal stroke, 20 mm adjustment range, PT tapered port threads, and the -S magnet option. Mounting options are limited to the Basic, FA, LB, TC, FTC, TCM1, and TCM2 footprints, omitting FB, CA, CB, and CR. Because the 70 mm stroke is relatively short, side-loading on the 12 mm rod is minimal, but an external guide is always recommended for heavy lateral loads.
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 SAIJ32AX70-20S 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 acts as a mechanical stop that lets you shorten the 70 mm nominal stroke by up to 20 mm, creating a 50 to 70 mm usable travel window. It functions as an end-position stop and does not lock the load without live air pressure.
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