Airtac SAIJ125 Adjustable Cylinder SAIJ125X15-10S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125X15-10S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 15mm 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
- Stroke15 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125X15-10S
The AirTAC SAIJ125X15-10-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering robust thrust for short-travel tasks. It yields 6136N of push force at 0.5 MPa, scaling up to 11045N at 0.9 MPa. The integrated magnet enables position detection using CMSE reed or DMSE electronic switches.
This specific SKU combines a 15mm nominal stroke with a 10mm adjustment range, creating a highly customizable 5-15mm usable travel window. A standard carbon steel rod and PT tapered port are configured for durable industrial environments. The extruded aluminum barrel includes sensor grooves on both sides, and the rear stopper allows precise end-position tuning without adding external physical stops.
Airtac SAIJ125 Adjustable Cylinder SAIJ125X15-10S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125X15-10S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 15 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 SAIJ125X15-10S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×15 | 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 SAIJ125X15-10S Is Used
Short-Stroke Clamping
Ideal for heavy-duty clamping fixtures where the 5-15mm adjustable travel window allows operators to compensate for workpiece tolerances during machine setup.
Product Changeover
Enables rapid line changeovers by letting technicians fine-tune the retract end position by up to 10mm without physically swapping the cylinder or adding shims.
End-Stop Calibration
Perfect for automated assembly stations needing precise final positioning, using the rear stopper to set the exact 5-15mm extension distance on the factory floor.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125X15-10S the Right Cylinder?
Selecting this 125mm bore actuator makes sense when an application requires massive push force in a very compact stroke envelope. If the project demands less thrust, stepping down to the 100mm bore yields 3927N at 0.5 MPa, whereas moving up to the 160mm bore provides 10053N. The adjustable 5-15mm window is ideal for final mechanical commissioning, letting operators dial in the exact clamping or spacing distance on the fly.
For ISO 15552 replacement matching, specify the 125mm bore, 15mm stroke, 10mm adjustment, PT port thread, and the -S magnet option. Mounting choices are limited to the SAIJ subset: Basic, FA, LB, TC, FTC, TCM1, and TCM2. Because the stroke is under 300mm, side-load stress is minimal, though the 32mm rod diameter still handles substantial off-center loads. Remember that the rear adjuster acts only as a travel stop; for load-holding without live air pressure, consider an AirTAC SAIL or BSAI cylinder.
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 SAIJ125X15-10S FAQ
This 125mm bore cylinder provides 6136N of push force and 5734N of pull force at 0.5 MPa. At 0.9 MPa, the push force increases to 11045N.
The rear adjuster acts as a mechanical stop that lets you trim the 15mm nominal stroke back by up to 10mm, resulting in a usable travel window of 5-15mm. It is a travel stop, not a lock, so it cannot hold the load without continuous air pressure.
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