Airtac Adjustable Cylinder SAIJ32 SAIJ32AX85-20S
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32AX85-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø32mm bore and 85mm 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
- Stroke85 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable, 27 mm
About the Airtac Adjustable Cylinder SAIJ32 SAIJ32AX85-20S
The AirTAC SAIJ32X85-20-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, enabling you to fine-tune the effective travel down to a 65-85 mm window without adding external stops. It delivers a 563N push force at 0.7 MPa, making it well-suited for lighter-duty positioning tasks. The PT-tapered G1/8 port and SUS420J2 stainless steel rod provide reliable operation in varied environments.
Because this variant includes the -S magnet, it directly supports AirTAC CMSE reed and DMSE electronic sensors housed within the dual-side sensor grooves. The rear adjustment screw acts purely as a mechanical end-stop to dial in the exact retract position during commissioning; it is not a locking device and cannot hold a load without continuous air pressure.
Airtac Adjustable Cylinder SAIJ32 SAIJ32AX85-20S Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32AX85-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø32 mm |
| Stroke | 85 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 SAIJ32AX85-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×85 | 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 SAIJ32AX85-20S Is Used
Variable End-Stop Tuning
Dial in the exact 65 to 85 mm retract position during machine commissioning to accommodate different product sizes without swapping the entire actuator.
Light-Duty Positioning
Leverage the 563N push force at 0.7 MPa and the SUS420J2 rod to accurately move and position lightweight workpieces along an assembly line.
Sensor-Ready Changeover
Utilize the integrated magnet with DMSE electronic sensors to confirm end-of-stroke positions during automated product line changeovers.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32AX85-20S the Right Cylinder?
Choose this 32 mm bore when a 402N pull force at 0.5 MPa is sufficient, stepping down from a 40 mm bore that yields 528N if your application requires less energy and a smaller ISO 15552 footprint. The adjustable stroke is ideal for machine setups requiring variable end-stops or product changeovers, offering more flexibility than a fixed-stroke SAI cylinder.
If your process demands true load-holding without live air pressure, you will need an external rod lock or a different series like SAIL or BSAI, as the SAIJ adjuster only sets the travel limit. For replacement, match the 32 mm bore, 85 mm stroke, 20 mm adjustment, PT port thread, and Basic, FA, LB, TC, FTC, TCM1, or TCM2 mounting interfaces.
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 SAIJ32AX85-20S FAQ
At an operating pressure of 0.7 MPa, this 32 mm bore cylinder provides a push force of 563N and a pull force of 483N, with a maximum push force of 724N at 0.9 MPa.
The rear adjuster screw allows you to mechanically shorten the 85 mm nominal stroke by up to 20 mm, creating a 65 to 85 mm usable travel window for precise end-position tuning during setup.
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