Airtac Adjustable Cylinder SAIJ32 SAIJ32BX85-40S
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32BX85-40S 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 SAIJ32BX85-40S
The AirTAC SAIJ32X85-40-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the nominal 85 mm travel by up to 40 mm. This creates a highly flexible 45-85 mm usable stroke window, perfect for fine-tuning end positions at commissioning without swapping out the entire unit. It delivers 402 N of push force and 345 N of pull force at 0.5 MPa.
Built for demanding environments, this specific configuration features a SUS304 stainless steel rod (option B) for superior corrosion resistance and uses PT tapered port threads (G1/8). The extruded aluminum barrel includes sensor grooves on both sides, and the integrated -S magnet supports position detection via AirTAC CMSE reed or DMSE electronic solid-state switches.
Airtac Adjustable Cylinder SAIJ32 SAIJ32BX85-40S Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32BX85-40S |
|---|---|
| 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 SAIJ32BX85-40S
| 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 SAIJ32BX85-40S Is Used
Machine Changeover
Quickly adapt end-of-stroke positions during product size changeovers on a packaging line without disassembling the cylinder or adding external stopper blocks.
Variable End Stops
Dial in the exact clamping distance within the 45-85 mm window during initial commissioning to compensate for mechanical tolerances in the fixture.
Sensor Calibration
Leverage the -S magnet and CMSE/DMSE switches to confirm exact end positions while adjusting the rear stopper for automated testing equipment.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX85-40S the Right Cylinder?
Choose this 32 mm bore when an application requires precise positioning within a 45-85 mm travel window and moderate force (402 N push at 0.5 MPa). If your setup needs less force, stepping down is an option, but stepping up to a 40 mm bore yields 628 N of push force for heavier payloads. The adjustable rear stopper is ideal for variable end-stops and product changeovers, whereas a fixed SAI cylinder is better for rigid, unchanging travel limits. Remember that the rear adjuster acts only as a travel stop and does not hold the load without live air; for true load-holding, consider an SAIL or BSAI cylinder.
For an exact ISO 15552 replacement match, ensure your specifications align with this SKU: a 32 mm bore, 85 mm nominal stroke, 40 mm adjustment range, PT tapered G1/8 ports, SUS304 stainless steel rod, and a -S magnet. Mounting options include the standard SAIJ subset of Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, and CR). Because the 85 mm stroke is relatively short, external side-load guides are less critical here than on longer strokes, though the 12 mm rod and M10x1.25 thread still handle lateral loads best when properly supported.
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 SAIJ32BX85-40S FAQ
The rear adjuster screw acts as a mechanical stop that shortens the effective travel. For this model, you can trim the nominal 85 mm stroke back by up to 40 mm, providing a usable travel window of 45 to 85 mm.
At an operating pressure of 0.5 MPa, 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 delivers up to 82 kgf.
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