Airtac SAIJ125 Adjustable Cylinder SAIJ125X125-10S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X125-10S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 125mm stroke, G1/2 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ125 mm
- Stroke125 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125X125-10S
The AirTAC SAIJ125X125-10-S is a double-acting ISO 15552 profile cylinder equipped with a rear mechanical adjuster, allowing you to fine-tune the retract end-position at commissioning. Based on a 125 mm bore and a 125 mm nominal stroke, this SKU provides a usable travel window of 115-125 mm, letting you dial back the stroke by up to 10 mm without adding external stops. It delivers a robust 6136 N pull force at 0.5 MPa, making it well-suited for heavy material handling.
This variant features a standard carbon steel piston rod and a PT tapered port thread. Because it includes the -S magnet option, it directly supports AirTAC CMSE reed and DMSE solid-state electronic sensors mounted into the dual-side extruded barrel grooves. The SAIJ mounting set omits FB, CA, CB, and CR brackets, utilizing a focused range of Basic, FA, LB, TC, FTC, TCM1, and TCM2 interfaces for streamlined machine integration.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X125-10S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X125-10S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 125 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 | 6136 N | 5734 N |
| 0.7 MPa | 8590 N | — |
| Max (@1.0 MPa) | 1251 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ125 Adjustable Cylinder SAIJ125X125-10S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | 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 SAIJ125 Adjustable Cylinder SAIJ125X125-10S Is Used
Product Changeover Tuning
Dial in the exact 115-125 mm end position during a production line format change, using the rear screw to adapt to new package sizes without replacing the actuator.
Heavy Press Assembly
Leverage the 6136 N pull force to seat heavy mechanical components, using the adjustable stop to fine-tune the pressing depth precisely at the commissioning stage.
Pallet Positioning
Index large pallets or fixtures using the position feedback from DMSE solid-state sensors, relying on the rear stopper to set the exact retract distance.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X125-10S the Right Cylinder?
Choose this 125 mm bore when your application requires substantial thrust—stepping down to an 80 mm bore drops the 0.5 MPa push force to 2513 N, while moving up to a 160 mm bore yields 10053 N. The adjustable stroke is ideal for product changeovers on a line, allowing you to reposition the end stop in seconds rather than physically swapping the cylinder for a different fixed-stroke SAI unit. Remember that the rear adjuster acts purely as a travel stop and does not hold the load without live air; for true drop-prevention or position holding without pressure, select the SAIL pneumatic lock or BSAI clamp-lock series instead. With a 125 mm stroke, side-loading is minimal, but always ensure the M27x2 rod thread is aligned to prevent premature seal wear.
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 SAIJ125X125-10S FAQ
The rear adjuster screw allows you to shorten the effective travel from the nominal 125 mm down to 115 mm, creating a 10 mm tuning window. It acts as a mechanical stop to set the end position and is not a lock, meaning the cylinder requires live air to hold a load.
At 0.5 MPa, this 125 mm bore cylinder provides 6136 N of pull force and 8590 N at 0.7 MPa. Because it carries the -S magnet option, it is fully compatible with AirTAC CMSE reed switches and DMSE electronic sensors for precise position detection.
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