Airtac Adjustable Cylinder SAIJ32 SAIJ32BX45-20
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32BX45-20 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø32mm bore and 45mm 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
- Stroke45 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable, 27 mm
About the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX45-20
The AirTAC SAIJ32X45-20 is a double-acting, single-rod ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a 25-45 mm usable travel window, allowing you to dial back the 45 mm nominal stroke by up to 20 mm during commissioning. Delivering 402 N of push force at 0.5 MPa, it suits lighter-duty tasks requiring exact end-position tuning.
This variant uses a SUS304 stainless steel rod for superior corrosion resistance and includes a PT tapered port thread. The extruded aluminum barrel incorporates sensor grooves on both sides, ready for CMSE reed or DMSE electronic switches if a magnet is added later. The rear screw acts purely as a travel stop to set deceleration, not as a lock to hold the load without live air pressure.
Airtac Adjustable Cylinder SAIJ32 SAIJ32BX45-20 Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32BX45-20 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø32 mm |
| Stroke | 45 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 SAIJ32BX45-20
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×45 | 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 SAIJ32BX45-20 Is Used
Precision End-Stop Tuning
Dial in the exact 25-45 mm travel distance during machine commissioning to perfect the final position of delicate pick-and-place movements.
Product Size Changeovers
Quickly adjust the retract end-position by up to 20 mm on packaging lines without physically swapping out the entire cylinder for different parts.
Corrosion-Resistant Testing
Leverage the SUS304 stainless steel rod for light-duty actuation in laboratory or testing environments where moisture resistance is necessary.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX45-20 the Right Cylinder?
Choose this 32 mm bore when an application demands precise end-stop tuning without adding external stops; for higher force needs, stepping up to the 40 mm bore yields 628 N of push force at 0.5 MPa. The SAIJ32X45-20 is ideal for product changeovers where the exact 25-45 mm travel window must be tweaked on the fly. If your process requires the cylinder to hold its position without continuous air pressure, you must use an external pilot-operated check valve or switch to a SAIL lock cylinder, as the SAIJ adjuster is only a stop.
To match this ISO 15552 dimensionally interchangeable cylinder for a replacement, verify the 32 mm bore, 45 mm stroke, 20 mm adjuster, PT port thread, and standard carbon steel mounting hardware. Because the stroke is under 300 mm, side-load stress is minimal, though the 12 mm rod still requires external guidance for heavy radial 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 SAIJ32BX45-20 FAQ
At 0.5 MPa operating pressure, this 32 mm bore cylinder provides 402 N of push force and 345 N of pull force. At its maximum 1.0 MPa pressure, it can deliver up to 82 kgf.
The rear adjuster screw allows you to shorten the 45 mm nominal stroke by up to 20 mm, creating a 25-45 mm usable travel window. This stopper fine-tunes the end position but does not lock the load without live air pressure.
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