Airtac SAIJ125 Adjustable Cylinder SAIJ125X30-10S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X30-10S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 30mm 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
- Stroke30 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125X30-10S
The AirTAC SAIJ125X30-10-S is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster. It provides a 6136N push force at 0.5MPa and uses a carbon steel rod with PT tapered ports. The -10 code yields a 20-30mm usable travel window, letting you dial in the exact end position without adding external stops.
This unit includes a magnet for position sensing, working seamlessly with AirTAC CMSE reed and DMSE electronic switches. The extruded aluminum barrel integrates sensor grooves on both sides. It uses the reduced SAIJ mounting set: Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X30-10S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X30-10S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 30 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 SAIJ125X30-10S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×30 | 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 SAIJ125X30-10S Is Used
Heavy Clamping Tuning
Dial in the exact 20-30mm clamping distance on heavy fixtures during setup, accommodating slight material thickness variations without remounting the cylinder.
Product Changeover
Quickly adjust the end-stop for new product sizes on a packaging line, using the 10mm rear screw trim to meet varying component heights rapidly.
Short-Stroke Pressing
Execute high-force pressing operations where precise end-position control is critical, leveraging the 6136N thrust and fine travel adjustment.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X30-10S the Right Cylinder?
Choose this 125mm bore when you need heavy thrust (6136N push at 0.5MPa) over a very short, fine-tuned travel window. If your application requires less force, stepping down to an 80mm bore yields 2513N. The adjustable rear stopper allows precise end-position tuning during commissioning or product changeover, unlike a fixed-stroke SAI cylinder.
Remember that the rear adjuster acts only as a travel stop and does not hold the load without live air. For load-holding without pneumatic pressure, consider an AirTAC SAIL or BSAI cylinder. This model operates at 30-500mm/s and includes a -S magnet for CMSE/DMSE sensors.
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 SAIJ125X30-10S FAQ
At 0.5MPa operating pressure, this 125mm bore cylinder provides 6136N of push force and 5734N of pull force. At the maximum 1.0MPa pressure, it delivers 1251 kgf.
The rear adjuster screw allows you to shorten the 30mm nominal stroke by up to 10mm, creating a 20-30mm usable travel window. This stopper only sets the end position and does not lock the load without live air.
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