Airtac Adjustable Cylinder SAIJ32 SAIJ32AX85-50S
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32AX85-50S 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 SAIJ32AX85-50S
The AirTAC SAIJ32X85-50-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It delivers 402N of push force at 0.5MPa and provides a usable travel window of 35-85mm, letting you trim the nominal 85mm stroke by up to 50mm. This wide adjustment band is ideal for prototyping or lines running multiple product sizes, eliminating the need to swap physical cylinders during changeovers.
This SKU features a SUS420J2 stainless steel rod for superior corrosion resistance and includes a magnet for position sensing. It is compatible with AirTAC CMSE reed and DMSE solid-state switches, which seat neatly into the sensor grooves on both sides of the extruded aluminum barrel. The PT tapered port thread and M10x1.25 rod thread match standard 32mm bore hardware, while the rear adjuster acts purely as an end-stop and does not hold the load without live air pressure.
Airtac Adjustable Cylinder SAIJ32 SAIJ32AX85-50S Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32AX85-50S |
|---|---|
| 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 SAIJ32AX85-50S
| 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 SAIJ32AX85-50S Is Used
Product Changeover Lines
Dial in the 35-85mm travel window on the fly to accommodate varying package lengths without physically swapping out the cylinder.
Prototyping Fixtures
Use the 50mm rear adjustment to find the exact end-of-stroke position during R&D testing before finalizing a fixed-stroke SAI cylinder.
Light Assembly Stations
Leverage the 402N push force at 0.5MPa for precise pressing tasks, fine-tuning the stopper to prevent overtravel on delicate components.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32AX85-50S the Right Cylinder?
Choose this 32mm bore if your application requires roughly 402N of push force at 0.5MPa or 563N at 0.7MPa. If you need less force, there is no smaller standard SAIJ bore, but stepping up to a 40mm bore yields 628N at 0.5MPa. The 50mm adjustment range on this 85mm stroke is extreme, meaning the rear screw sits deep into the cylinder at maximum extension, making it perfect for dialing in exact end positions without adding external mechanical stops.
When replacing an ISO 15552 cylinder, match the 32mm bore, 85mm stroke, 50mm adjustment, PT port thread, and the -S magnet requirement. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, deliberately omitting FB, CA, CB, and CR. Because the stroke is under 300mm, side-load risks are minimal, but always guide the load if it is heavy or unsupported. For load-holding without live air, select the SAIL or BSAI series instead, as this adjuster is not a brake.
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 SAIJ32AX85-50S FAQ
The rear adjuster screw lets you shorten the effective stroke by up to 50mm. This creates a usable travel window of 35-85mm, allowing you to set the exact end position at commissioning without changing the cylinder.
At 0.5MPa operating pressure, it provides 402N of push force and 345N of pull force. At 0.7MPa, the push force increases to 563N.
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