Airtac SAIJ125 Adjustable Cylinder SAIJ125AX65-10S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX65-10S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 65mm 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
- Stroke65 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX65-10S
The AirTAC SAIJ125X65-10-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, allowing you to dial back the 65 mm nominal stroke by up to 10 mm for a precise 55-65 mm usable travel window. Delivering 6136 N of push force at 0.5 MPa, it handles heavy loads while enabling exact end-position tuning at commissioning without swapping hardware.
This variant features a SUS420J2 stainless steel rod (code A) for superior corrosion resistance and includes a magnet (-S) for direct compatibility with AirTAC CMSE reed and DMSE electronic sensors. It operates at 30-500 mm/s and utilizes a PT tapered port thread, ensuring robust sealing in demanding industrial environments.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX65-10S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX65-10S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 65 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 SAIJ125AX65-10S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×65 | 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 SAIJ125AX65-10S Is Used
Press Fit Tuning
Dial in the exact 55-65 mm insertion depth for heavy press-fit operations during initial setup or when tooling dimensions vary slightly.
Product Changeover Stops
Adjust the retract stop on the fly to accommodate different package sizes on a packaging line without physically replacing the cylinder.
Heavy Material Handling
Leverage the 6136 N push force to move dense materials, using the rear stopper to fine-tune the resting position against mechanical hard stops.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX65-10S the Right Cylinder?
Choose this 125 mm bore when a 100 mm cylinder (providing 3927 N push at 0.5 MPa) lacks the necessary thrust, but before stepping up to a 160 mm bore (10053 N) which requires significantly more space and air volume. The adjustable stroke is ideal for product changeovers, letting you fine-tune the retract position on the fly versus a fixed-stroke SAI cylinder. Remember that the rear adjuster acts only as a travel stop, not a lock; the SAIJ cannot hold a load without live air, so for fail-safe load holding consider an AirTAC SAIL or BSAI cylinder. To replace an ISO 15552 cylinder, match the 125 mm bore, 65 mm stroke, PT port, and mounting choice (Basic, FA, LB, TC, FTC, TCM1, or TCM2).
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 SAIJ125AX65-10S FAQ
At 0.5 MPa operating pressure, this 125 mm bore cylinder provides 6136 N of push force and 5734 N of pull force. At the maximum 1.0 MPa pressure, it can deliver up to 1251 kgf.
The rear adjuster screw acts as a mechanical stop that lets you shorten the 65 mm nominal stroke by up to 10 mm, creating a 55-65 mm usable travel window. It is a stop only, not a lock, meaning the cylinder still requires live air to hold its position.
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