Airtac SAIJ125 Adjustable Cylinder SAIJ125AX35-10S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX35-10S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 35mm 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
- Stroke35 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX35-10S
The AirTAC SAIJ125X35-10-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 6136N of push force at 0.5MPa. It features a 35mm nominal stroke that can be fine-tuned down by up to 10mm, providing a usable travel window of 25-35mm for precise end-position calibration. This unit includes a SUS420J2 stainless steel rod for enhanced corrosion resistance and a -S magnet for position sensing.
The rear adjuster acts strictly as a mechanical stop to set the retract position and cannot hold a load without continuous air pressure. For load-holding requirements without live air, consider the SAIL or BSAI variants. This profile cylinder uses PT tapered ports and supports CMSE reed and DMSE electronic sensors installed in the dual-side sensor grooves.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX35-10S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX35-10S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 35 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 SAIJ125AX35-10S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×35 | 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 SAIJ125AX35-10S Is Used
Precision End-Stop Tuning
Dial in the exact 25-35mm retract position during machine commissioning to achieve perfect alignment without swapping cylinders or adding external shims.
Product Size Changeover
Quickly adjust the stroke end-point by up to 10mm on a packaging line when transitioning between different product dimensions.
High-Force Clamping
Leverage the 6136N push force at 0.5MPa to securely clamp heavy workpieces while fine-tuning the clamping depth via the rear screw.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX35-10S the Right Cylinder?
Select this 125mm bore cylinder when an application requires substantial thrust—such as 6136N push or 5734N pull at 0.5MPa—combined with a very short, adjustable stroke. If your setup needs less force, stepping down to a 100mm bore provides 3927N push force. The 10mm adjustment window is ideal for dialing in exact end-stops during machine commissioning without needing external shims.
When replacing an ISO 15552 cylinder, match the 125mm bore, 35mm stroke, 10mm adjustment, PT port thread, and -S magnet. The SAIJ mounting set includes Basic, FA, LB, TC, FTC, TCM1, and TCM2 options, omitting FB, CA, CB, and CR. Operating speed for this bore size is 30-500mm/s.
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 SAIJ125AX35-10S FAQ
At 0.5MPa operating pressure, this 125mm bore cylinder provides 6136N of push force and 5734N of pull force. At 0.7MPa, the push force increases to 8590N.
The rear adjuster screw allows you to shorten the 35mm nominal stroke by up to 10mm, creating a usable travel window of 25-35mm. This stopper fine-tunes the end position but does not lock the load without live air pressure.
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