Airtac SAIJ125 Adjustable Cylinder SAIJ125AX100-10
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX100-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 100mm 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
- Stroke100 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX100-10
The AirTAC SAIJ125X100-10 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering a robust 8590N pull force at 0.7 MPa. It features a SUS420J2 stainless steel rod and PT tapered port threads. By integrating an external adjusting screw, this model provides a usable travel window of 90-100 mm, allowing you to dial back the 100 mm nominal stroke by up to 10 mm during commissioning.
This built-in stopper mechanism enables fine end-position tuning without swapping out the cylinder or adding external stops, which is ideal for product-size changeovers on a packaging line. The extruded aluminum barrel includes sensor grooves on both sides, and while this unit lacks a magnet, adding an -S option enables compatibility with CMSE reed and DMSE electronic solid-state switches. It is important to note that the rear adjuster acts solely as a travel stop and does not hold the load without live air pressure.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX100-10 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX100-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 100 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 SAIJ125AX100-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×100 | 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 SAIJ125AX100-10 Is Used
Machine Changeovers
Dial in the 90-100 mm travel window during product-size changeovers to set new retract end-stops without physically swapping cylinders.
End-Position Tuning
Fine-tune the final retract position at commissioning to compensate for mechanical tolerances or sensor placement variations.
Heavy-Duty Clamping
Leverage the 8590N pull force to secure heavy workpieces, using the rear stopper to precisely limit the clamp opening distance.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX100-10 the Right Cylinder?
When selecting this cylinder, consider that the 125 mm bore provides 6136N of push force at 0.5 MPa; stepping down to a 100 mm bore drops the output to 5497N at 0.7 MPa, while moving up to a 160 mm bore increases it to 14074N. The adjustable stroke is specifically chosen when you need a variable end-stop for machine setup rather than relying on a fixed-stroke SAI cylinder. For load-holding applications without live pressure, this plain adjuster cannot act as a lock, so you should look toward the SAIL or BSAI series. As a true ISO 15552 profile cylinder, it ensures dimensional interchangeability and uses a reduced mounting set of Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR. Because the 100 mm stroke is relatively short, side-load concerns are minimal, but always ensure proper rod alignment.
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 SAIJ125AX100-10 FAQ
At an operating pressure of 0.7 MPa, this 125 mm bore cylinder generates 8590N of pull force and 11045N of push force. At 0.5 MPa, it provides 6136N of push and 5734N of pull.
The rear adjuster acts as a mechanical stop that lets you shorten the 100 mm nominal stroke by up to 10 mm, creating a 90-100 mm usable travel window. It only sets the travel end and does not lock the load without live air.
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