Airtac Adjustable Cylinder SAIJ32 SAIJ32BX70-20S
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32BX70-20S 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 SAIJ32BX70-20S
The AirTAC SAIJ32X70-20-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a nominal 70mm stroke that can be dialed back by up to 20mm, creating a precise 50-70mm usable travel window for commissioning flexibility. Delivering 345N of pull force at 0.5MPa, it fits light-duty applications perfectly.
This variant uses a SUS304 stainless steel rod (option B) for superior corrosion resistance and includes a magnet for CMSE reed and DMSE electronic sensors. The extruded aluminum barrel incorporates sensor grooves on both sides, and fluid connections use PT tapered ports sized at G1/8.
Airtac Adjustable Cylinder SAIJ32 SAIJ32BX70-20S Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32BX70-20S |
|---|---|
| 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 SAIJ32BX70-20S
| 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 SAIJ32BX70-20S Is Used
End-Position Tuning
Fine-tune the retract stroke from 50 to 70mm during machine setup to dial in exact sensor triggers without adding external stopper blocks.
Product Changeover
Quickly adapt automated lines to varying part sizes by twisting the rear adjustment screw, achieving new end-stops in seconds.
Light-Duty Positioning
Move small jigs or fixtures with 402N of push force while relying on the SUS304 rod for clean or mildly corrosive environments.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX70-20S the Right Cylinder?
Choose this 32mm bore when a 402N push force at 0.5MPa is sufficient, stepping down from the 40mm bore which offers 528N of pull force. The adjustable stroke is ideal for machines requiring variable end-stops or fine-tuning during product changeovers, eliminating the need to swap out a fixed-stroke SAI cylinder. Remember that the rear adjuster acts only as a travel stop; it does not hold the load without live air. For true load-holding, consider the SAIL or BSAI series.
When replacing an ISO 15552 cylinder, match the 32mm bore, 70mm nominal stroke, 20mm adjustment range, PT G1/8 ports, and the -S magnet. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, omitting FB, CA, CB, and CR configurations.
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 SAIJ32BX70-20S FAQ
It features a rear adjusting screw that allows you to shorten the effective stroke by up to 20mm. This creates a 50-70mm travel window, letting you set the exact retract end-position at commissioning without replacing the cylinder.
At 0.5MPa operating pressure, it provides 402N of push force and 345N of pull force. At the maximum 1.0MPa pressure, the push force reaches 801N.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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