Airtac Adjustable Cylinder SAIJ32 SAIJ32BX85-40
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32BX85-40 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 SAIJ32BX85-40
The AirTAC SAIJ32X85-40 is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a nominal 85 mm stroke that can be fine-tuned down by up to 40 mm, yielding a usable travel window of 45 to 85 mm. In the 32 mm bore class, it delivers 402 N of push force and 345 N of pull force at 0.5 MPa, making it well-suited for lighter-duty positioning tasks.
This configuration incorporates a SUS304 stainless steel rod (option B) for enhanced corrosion resistance in humid or mildly chemical environments. Fluid supply is routed through a PT G1/8 port, and the extruded aluminum barrel includes sensor grooves on both sides. While no magnet is specified for this unit, adding one enables compatibility with AirTAC CMSE reed and DMSE electronic sensors for position feedback.
Airtac Adjustable Cylinder SAIJ32 SAIJ32BX85-40 Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32BX85-40 |
|---|---|
| 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 SAIJ32BX85-40
| 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 SAIJ32BX85-40 Is Used
Machine Setup Changeover
Dial in the exact 45 to 85 mm end-stop during product family changeovers, avoiding the need to physically swap cylinders for varying part sizes.
End-Position Tuning
Fine-tune the retract stroke on the fly to perfect the seating position of delicate components without adding bulky external hard stops.
Corrosive Environment Actuation
Leverage the SUS304 stainless steel rod for light-duty positioning tasks in humid or chemically exposed laboratory and processing equipment.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX85-40 the Right Cylinder?
Select this 32 mm bore adjustable cylinder when your application requires precise end-position tuning during commissioning without the need to physically swap components or add external stops. If your setup demands greater thrust, stepping up to the 40 mm bore yields 628 N of push force at 0.5 MPa. Conversely, if the 40 mm adjustment range is excessive, dropping to a -20 code provides a tighter 65 to 85 mm travel window.
When replacing an ISO 15552 cylinder, match the 32 mm bore, 85 mm stroke, PT G1/8 port, and mounting choice (Basic, FA, LB, TC, FTC, TCM1, or TCM2). Note that the rear adjuster acts strictly as a travel stop and does not hold the load without continuous air pressure; for dead-air load holding, consider an AirTAC SAIL or BSAI variant. Because the 85 mm stroke is relatively short, side-loading is minimal, but external guidance is still recommended for heavy off-center 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 SAIJ32BX85-40 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 a maximum push force of 724 N at 0.9 MPa.
The rear adjuster screw allows you to shorten the nominal 85 mm stroke by up to 40 mm, creating a usable travel window of 45 to 85 mm. This stopper only limits the travel end and does not lock the load without live air pressure.
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