Airtac SAIJ125 Adjustable Cylinder SAIJ125AX35-10
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX35-10 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 SAIJ125AX35-10
The AirTAC SAIJ125X35-10 is a double-acting ISO 15552 profile cylinder featuring a rear-mounted stroke adjuster. It provides a nominal 35 mm stroke that can be fine-tuned down by up to 10 mm, creating a precise 25-35 mm usable travel window for exact end-position calibration. Delivering 6136 N of push force at 0.5 MPa, it handles heavy loads while maintaining a standard ISO 15552 mounting footprint.
This variant features an SUS420J2 stainless steel rod for enhanced corrosion resistance and utilizes PT tapered port threads with a G1/2 connection. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch placement. While the rear adjuster allows you to dial in the retract position without adding external stops, it functions only as a travel stop and does not hold the load without live air pressure.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX35-10 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX35-10 |
|---|---|
| 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 SAIJ125AX35-10
| 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 SAIJ125AX35-10 Is Used
Precision Press Fit
Dial in the exact 25-35 mm insertion depth during machine commissioning to prevent component damage without swapping physical spacers.
Product Changeover
Quickly adjust the retract end-stop by up to 10 mm when running a slightly different product variant on the same heavy-duty line.
Heavy Clamping
Leverage 6136 N of push force at 0.5 MPa to secure large workpieces, using the rear stop to tune the clamp position perfectly.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX35-10 the Right Cylinder?
Choose this 125 mm bore when a smaller 100 mm cylinder lacks sufficient thrust, as stepping up from 100 mm increases push force at 0.5 MPa from 3927 N to 6136 N. The adjustable stroke is selected over a fixed SAI cylinder when applications require variable end-stops or on-the-fly commissioning tweaks to avoid mechanical binding. To replace an ISO 15552 cylinder, match the 125 mm bore, 35 mm stroke, 10 mm adjustment, PT port thread, and mounting style (Basic, FA, LB, TC, FTC, TCM1, or TCM2). Note that this model omits the -S magnet; adding it enables CMSE reed and DMSE electronic 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 SAIJ125AX35-10 FAQ
At a 0.5 MPa operating pressure, this 125 mm bore cylinder generates 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 rating.
The rear adjuster acts as a mechanical stop that lets you shorten the 35 mm nominal stroke by up to 10 mm, providing a usable travel window of 25-35 mm. It only sets the end position and does not lock or hold the load without continuous air pressure.
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