Airtac SAIJ125 Adjustable Cylinder SAIJ125X325-10S
The AirTAC SAIJ125 Adjustable Cylinder SAIJ125X325-10S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 325mm stroke, G1/2 air ports and adjustable end cushioning. Its standardized mounting interface makes it interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ125 mm
- Stroke325 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125X325-10S
The AirTAC SAIJ125X325-10-S is a double-acting, double-rod ISO 15552 profile cylinder equipped with a rear stroke adjuster. The integrated magnet (-S) enables direct position sensing using AirTAC CMSE reed or DMSE electronic solid-state switches mounted into the dual-side sensor grooves.
This specific SKU features a 325 mm nominal stroke that can be fine-tuned down by up to 10 mm, creating a precise 315-325 mm usable travel window. The extruded aluminum barrel design omits tie-rods, and the rear stopper screw allows you to dial in the retract end position during commissioning without adding external physical stops.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X325-10S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X325-10S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 325 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M27×2 |
| 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 – 500 mm/s |
| Cushion | Adjustable, 40 mm |
| Max stroke | Up to 1500 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 (Ø125mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 5734 N | 5734 N |
| 0.7 MPa | 8027 N | — |
| Max (@1.0 MPa) | 1169 kgf | |
Double-rod model: the rod passes through the rear cover, so both piston faces lose rod area and push is shown at the annular-area value. Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ125 Adjustable Cylinder SAIJ125X325-10S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×325 | 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 SAIJ125 Adjustable Cylinder SAIJ125X325-10S Is Used
Product Size Changeovers
Dial in the 315-325 mm travel window during format changes on a packaging line, using the 10 mm rear adjuster to hit the exact retract position without swapping hardware.
Automated Assembly Stops
Set precise retract limits on large automated assembly stations, relying on the PT G1/2 port and robust 125 mm profile to handle high flow and heavy masses.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X325-10S the Right Cylinder?
The adjustable stroke is ideal for product changeovers on a line, letting you shift the end-stop by up to 10 mm rather than swapping the entire cylinder for a fixed-stroke SAI variant. Mounting options are limited to the SAIJ subset: Basic, FA, LB, TC, FTC, TCM1, and TCM2 (excluding FB, CA, CB, and CR).
Because this model features a 325 mm stroke, the 32 mm diameter carbon steel rod and M27x2 rod thread will experience amplified side-loading moments if the load is unsupported; an external guide rail is recommended. Note that the rear adjuster acts only as a travel stop and does not hold the load without live air pressure. For true load-holding, consider an external rod lock or the AirTAC SAIL/BSAI locking cylinder series.
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 SAIJ125 Adjustable Cylinder SAIJ125X325-10S FAQ
At the maximum 1.0 MPa pressure, it delivers a maximum push force equivalent to 1251 kgf.
The rear adjuster screw acts as a mechanical stop that lets you shorten the 325 mm nominal stroke by up to 10 mm, providing a usable travel window of 315-325 mm. It only sets the end position and does not lock the load without continuous air pressure.
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Standard models are processed and dispatched in 3-5 business days.
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