Airtac SAIJ125 Adjustable Cylinder SAIJ125AX110-50S
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX110-50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 110mm 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
- Stroke110 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX110-50S
The AirTAC SAIJ125X110-50-S is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 6136 N of push force at 0.5 MPa. With a nominal 110 mm stroke and a 50 mm adjustment range, it provides a usable travel window of 60 to 110 mm. This allows you to dial in exact end positions at commissioning without swapping out the physical cylinder.
This model features a SUS420J2 stainless steel rod (option A) for enhanced corrosion resistance and includes a built-in magnet for position sensing. The extruded aluminum barrel includes sensor grooves on both sides, fully compatible with AirTAC CMSE reed and DMSE electronic switches. It uses a PT G1/2 port and offers variable air cushioning at both ends to decelerate heavy moving loads smoothly.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX110-50S Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX110-50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 110 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 SAIJ125AX110-50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×110 | 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 SAIJ125AX110-50S Is Used
Machine Setup & Changeover
Fine-tune the retract end-position during product size changeovers without physically replacing the cylinder or adding external mechanical stops.
Variable End-Stop Tuning
Dial in the exact travel distance within the 60 to 110 mm window during commissioning to perfect positioning accuracy on automated lines.
Heavy-Duty Forming
Leverage the 6136 N of thrust at 0.5 MPa for pressing or forming operations, using the rear adjuster to regulate the working depth.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX110-50S the Right Cylinder?
Choose this 125 mm bore when your application requires substantial thrust—stepping down to a 100 mm bore yields 3927 N at 0.5 MPa, while the 160 mm bore offers 10053 N for heavier demands. The adjustable stroke is ideal for product changeovers or setups requiring variable end-stops, functioning as a travel stop rather than a position lock; if you need to hold loads without live air pressure, consider the SAIL or BSAI series.
For a direct ISO 15552 dimensionally interchangeable replacement, match the 125 mm bore, 110 mm stroke, 50 mm adjustment, PT G1/2 port, and the -S magnet. Mounting options include Basic, FA, LB, TC, FTC, TCM1, and TCM2. Although the 32 mm rod thread provides excellent side-load capacity, any long unsupported stroke still requires an external guide to prevent rod binding.
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 SAIJ125AX110-50S 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 acts as a mechanical stop, allowing you to trim the effective stroke back by up to 50 mm. This creates a usable travel window of 60 to 110 mm, enabling precise end-position tuning at commissioning without changing the cylinder.
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