Airtac SAIJ125 Adjustable Cylinder SAIJ125AX15-10
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX15-10 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 SAIJ125AX15-10
The AirTAC SAIJ125X15-10 is a double-acting ISO 15552 profile cylinder featuring a rear stroke adjuster that allows you to fine-tune the end position without adding external stops. With a nominal 15 mm stroke and a 10 mm adjustment screw, it provides a usable travel window of 5 to 15 mm for precise machine setup. The 125 mm bore delivers 6136 N of push force at 0.5 MPa, making it suitable for heavy-duty short-travel tasks.
This variant uses a SUS420J2 stainless steel rod for enhanced durability against moisture and light corrosion. It features PT tapered port threads and operates without a magnet. The extruded aluminum barrel includes sensor grooves on both sides, and the mounting set spans Basic, FA, LB, TC, FTC, TCM1, and TCM2, omitting FB, CA, CB, and CR.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX15-10 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX15-10 |
|---|---|
| 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 SAIJ125AX15-10
| 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 SAIJ125AX15-10 Is Used
Short-Stroke Clamping
Dial in the exact 5 to 15 mm clamping reach during machine setup, accommodating material thickness variations without swapping cylinders.
End-Stop Tuning
Fine-tune the retraction end position on the fly, using the rear screw to set precise travel limits for sensitive tooling.
Heavy Duty Forming
Leverage the 6136 N push force at 0.5 MPa for high-impact short-stroke pressing or forming tasks on automated lines.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX15-10 the Right Cylinder?
Choose this 125 mm bore cylinder when a short 5-15 mm adjustable stroke and high force are required at 0.5 MPa. If you need less force, stepping down to an 80 mm bore yields 2513 N of push force. The rear adjuster acts purely as a travel stop to dial in the exact end position during commissioning; it does not hold the load without live air. For position holding without continuous pressure, consider an AirTAC SAIL or BSAI cylinder.
Because the 32 mm rod and M27x2 thread handle substantial side loads, this cylinder is robust. However, even with a large rod, any application experiencing dynamic lateral forces should still use an external guide to prevent premature seal wear. This model is dimensionally interchangeable per ISO 15552.
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 SAIJ125AX15-10 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 0.7 MPa, the push force increases to 8590 N.
The rear adjuster screw allows you to shorten the nominal 15 mm stroke by up to 10 mm. This creates a usable travel window of 5 to 15 mm, letting you fine-tune the end position at commissioning. The adjuster is a stop, not a lock, and requires live air to hold the load.
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