Airtac Adjustable Cylinder SAIJ32 SAIJ32BX115-20S
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32BX115-20S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø32mm bore and 115mm 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
- Stroke115 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable, 27 mm
About the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX115-20S
The AirTAC SAIJ32X115-20-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a 95-115 mm usable travel window by allowing you to trim the nominal 115 mm stroke back by up to 20 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 to compact precision tasks.
This variant features a SUS304 stainless steel rod for superior corrosion resistance and includes a magnet for position sensing. The extruded aluminum barrel incorporates sensor grooves on both sides, accepting AirTAC CMSE reed and DMSE electronic solid-state switches. You can fine-tune the retract end-position directly at commissioning without adding external stops or swapping the cylinder.
Airtac Adjustable Cylinder SAIJ32 SAIJ32BX115-20S Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32BX115-20S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø32 mm |
| Stroke | 115 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 SAIJ32BX115-20S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×115 | 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 SAIJ32BX115-20S Is Used
Machine Changeover
Dial in the 95-115 mm travel window during product size changes to set new retract positions without physically swapping cylinders.
End-Stop Calibration
Fine-tune the final retract position during commissioning to prevent mechanical interference, using the rear screw rather than external shims.
Corrosive Environments
Leverage the SUS304 stainless steel rod for reliable actuation in light chemical washdowns or humid environments where carbon steel would pit.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX115-20S the Right Cylinder?
Choose this 32 mm bore when your application requires 402 N of push force at 0.5 MPa, stepping down from a 40 mm bore that yields 628 N if space is tight, or up if you need more thrust. An adjustable stroke is highly beneficial for machine setups requiring variable end-stops or product changeovers, giving you a 95-115 mm travel window without the rigidity of a fixed-stroke SAI cylinder. The PT tapered port threads match standard pneumatic fittings seamlessly.
When specifying a replacement, verify the 32 mm bore, 115 mm stroke, 20 mm adjustment range, PT port thread, and the -S magnet requirement. The mounting hardware is limited to Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR options. Remember that the rear adjuster is a travel stop, not a lock; the SAIJ32X115-20-S will not hold a load without live air, so consider an SAIL or BSAI cylinder if load-holding is required.
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 SAIJ32BX115-20S FAQ
The rear adjuster screw acts as a mechanical stop that lets you shorten the effective stroke by up to 20 mm. This creates a 95-115 mm usable travel window, allowing you to fine-tune the end position at commissioning without changing the cylinder.
At 0.5 MPa operating pressure, the SAIJ32X115-20-S generates 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.
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