Airtac Adjustable Cylinder SAIJ32 SAIJ32BX125-50S
The AirTAC Airtac Adjustable Cylinder SAIJ32 SAIJ32BX125-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø32mm bore and 125mm 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
- Stroke125 mm
- Port sizeG1/8
- Acting typeDouble acting
- Rod threadM10×1.25
- CushionAdjustable, 27 mm
About the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX125-50S
The AirTAC SAIJ32X125-50-S is a double-acting, single-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. It provides a nominal 125 mm stroke that can be dialed back by up to 50 mm, yielding a usable travel window of 75-125 mm for precise end-position tuning. In the 32 mm bore class, it delivers 402 N of push thrust and 345 N of pull thrust at 0.5 MPa. This variant features a SUS304 stainless steel rod for corrosion resistance and includes a magnet for position sensing.
The rear adjustment mechanism acts strictly as a mechanical stop to set the retract end position during commissioning or product changeover, eliminating the need to swap cylinders or bolt on external stops. It is not a locking device and will not hold a load without live air pressure. For load-holding applications without continuous air, consider the SAIL or BSAI series. This model uses a PT tapered port and supports standard AirTAC CMSE reed and DMSE electronic sensors via its dual-sided sensor groove.
Airtac Adjustable Cylinder SAIJ32 SAIJ32BX125-50S Technical Specifications
| Model | Airtac Adjustable Cylinder SAIJ32 SAIJ32BX125-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø32 mm |
| Stroke | 125 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 SAIJ32BX125-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×125 | 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 SAIJ32BX125-50S Is Used
Product Changeover
Dial in the exact retract end-stop from 75 to 125 mm on packaging lines when product sizes change, without swapping out the cylinder.
Machine Setup
Fine-tune the end-of-stroke position during initial commissioning to perfect the timing of a 32 mm bore assembly mechanism.
Variable End Stops
Use the 50 mm adjustment range to accommodate multiple fixture heights on a single test station, relying on the 402 N push force.
Is the Airtac Adjustable Cylinder SAIJ32 SAIJ32BX125-50S the Right Cylinder?
Choose this 32 mm bore cylinder when an application requires 402 N of push force at 0.5 MPa, or step up to the 40 mm bore if you need 628 N. The 50 mm adjustment range is ideal for machinery requiring variable end stops or frequent product-size changeovers, replacing the need for fixed-stroke SAI cylinders when exact travel distances fluctuate. Because this is a magnet-equipped (-S) model, it is fully compatible with AirTAC CMSE and DMSE switches.
When replacing an ISO 15552 cylinder, match the 32 mm bore, 125 mm nominal stroke, 50 mm adjustment code, PT port thread, and SUS304 rod material. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, omitting the FB, CA, CB, and CR variants. The 12 mm rod and M10x1.25 thread handle moderate side loads, but because the stroke is 125 mm, ensure proper external guiding for any unsupported loads to prevent rod binding.
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 SAIJ32BX125-50S 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 0.7 MPa, the push force increases to 563 N.
The rear adjuster acts as a mechanical stop that allows you to shorten the effective stroke from its nominal 125 mm down to 75 mm. It sets the travel end but does not lock or hold the load without continuous air pressure.
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