Airtac SAIJ125 Adjustable Cylinder SAIJ125X225-10S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X225-10S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 225mm 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
- Stroke225 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125X225-10S
The AirTAC SAIJ125X225-10-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 6136N of pull force at 0.5 MPa. It features a carbon steel piston rod and a PT tapered port. Because this variant includes a magnet (-S), it directly supports AirTAC CMSE reed and DMSE electronic sensors for precise end-of-stroke detection.
The defining feature of this SKU is its 10mm adjustment range, which creates a usable travel window of 215-225mm. This built-in adjuster acts purely as a mechanical stop to fine-tune the retract end position during commissioning. It is not a locking mechanism, so the cylinder cannot hold a load without live air pressure. For true load-holding needs, consider the SAIL or BSAI series.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X225-10S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X225-10S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 225 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 SAIJ125X225-10S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×225 | 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 SAIJ125X225-10S Is Used
Machine Changeover
Dial in the retract position within the 215-225mm window to accommodate new product dimensions without physically replacing the cylinder.
Assembly Pressing
Leverage the 6136N pull force at 0.5 MPa to seat components, using the 10mm adjuster to fine-tune the pressing depth accurately.
Conveyor Diverter
Adjust the end-stop precisely during commissioning to position diverters accurately, utilizing the integrated CMSE/DMSE sensor groove.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X225-10S the Right Cylinder?
Choose this 125mm bore when an application requires substantial thrust—stepping down to an 80mm bore yields only 2268N of pull force at 0.5 MPa, which may be insufficient for heavy positioning tasks. The 10mm adjustable window is ideal for product changeovers on a line, allowing operators to dial in the exact end-stop without swapping the cylinder or adding external stops. Unlike a fixed-stroke SAI cylinder, this model absorbs mechanical variance during setup.
When replacing an ISO 15552 cylinder, match the 125mm bore, 225mm stroke, PT port, and the -S magnet requirement. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2, deliberately omitting FB, CA, CB, and CR options. Since the stroke is under 300mm, side-load risks are moderate, but the 32mm rod diameter handles standard loads effectively.
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 SAIJ125X225-10S FAQ
The nominal stroke is 225mm, but the rear adjuster allows you to shorten the effective travel by up to 10mm. This creates a usable stroke window of 215-225mm for exact end-position tuning.
At an operating pressure of 0.5 MPa, the 125mm bore provides 6136N of pull force and 8590N of push force. It operates at speeds between 30-500 mm/s.
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Standard models usually ship in 3-4 days.
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