Airtac SAIJ125 Adjustable Cylinder SAIJ125AX225-10S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX225-10S 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 SAIJ125AX225-10S
The AirTAC SAIJ125X225-10-S is a double-acting ISO 15552 profile cylinder with a rear-mounted stroke adjuster, enabling you to dial in the exact end-of-travel position. With a 225 mm nominal stroke and a 10 mm adjustment range, it provides a usable travel window of 215 to 225 mm. This bore size delivers a robust 6136 N push force at 0.5 MPa, making it well-suited for heavy-duty positioning tasks.
This variant features a SUS420J2 stainless steel rod (code A) for enhanced corrosion resistance and includes a piston magnet (-S) for use with AirTAC CMSE reed and DMSE electronic sensors. The extruded aluminum barrel integrates sensor grooves on both sides, and the standard PT tapered G1/2 porting matches the ISO 15552 mounting interface for straightforward machine integration.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX225-10S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX225-10S |
|---|---|
| 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 SAIJ125AX225-10S
| 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 SAIJ125AX225-10S Is Used
Machine Changeover
Fine-tune the 215-225 mm travel window during product size transitions to set precise retract positions without machining new hard stops.
Heavy Assembly Pressing
Leverage the 6136 N push force at 0.5 MPa to seat heavy components, using the rear screw to dial in the exact contact depth.
Sensor-Driven Positioning
Utilize the integrated -S magnet with DMSE solid-state sensors to confirm end-of-stroke arrival within the adjusted travel window.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX225-10S the Right Cylinder?
Select this 125 mm bore cylinder when an application requires substantial thrust—stepping down to a 100 mm bore reduces the 0.5 MPa push force to 3927 N, while moving up to a 160 mm bore increases it to 10053 N. The adjustable stroke is ideal for product changeovers, allowing you to fine-tune the retract end-position at commissioning without swapping the cylinder or adding external stops. Note that the rear adjuster acts only as a travel stop; it does not hold the load without live air. For fail-safe load holding, consider the SAIL or BSAI series.
Because the 225 mm stroke is below the 1500 mm maximum standard stroke for this bore, it is a stock-compatible configuration. Operating speed is 30-500 mm/s. Ensure the mounting selection uses the SAIJ subset (Basic, FA, LB, TC, FTC, TCM1, TCM2), as FB, CA, CB, and CR mounts are omitted from this adjustable 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 SAIJ125AX225-10S FAQ
At 0.5 MPa operating pressure, this 125 mm bore cylinder provides 6136 N of push force and 5734 N of pull force. It can deliver up to 1251 kgf at its maximum 1.0 MPa pressure.
The rear adjuster screw allows you to shorten the effective stroke by up to 10 mm, creating a usable travel window of 215 to 225 mm. This stopper fine-tunes the retract end-position at commissioning but does not lock or hold the load without continuous air pressure.
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