Airtac SAI125 Standard Air Cylinder SAI125AX50S
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125AX50S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 50mm 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
- Stroke50 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125AX50S
The AirTAC SAI125X50-S is a double-acting ISO 15552 profile cylinder engineered for heavy-duty automation. It provides a substantial push force of 6136 N and a pull force of 5734 N at 0.5 MPa, making it well-suited for short, high-thrust clamping and pressing operations. The extruded aluminum barrel design eliminates traditional tie rods while maintaining strict dimensional interchangeability with other ISO 15552 cylinders.
This specific configuration includes a SUS420J2 stainless steel rod (material code A) for enhanced resistance to moisture and corrosion in demanding environments. The integrated magnet (-S) allows direct mounting of CMSE or DMSE series sensor switches along the dual grooves machined into the barrel profile. Fluid and air connections use PT tapered port threads, and the standard 50 mm stroke ensures rapid cycling.
Airtac SAI125 Standard Air Cylinder SAI125AX50S Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125AX50S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 50 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 SAI125 Standard Air Cylinder SAI125AX50S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×50 | 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 SAI125 Standard Air Cylinder SAI125AX50S Is Used
Heavy-Duty Stamping
Generates 6136 N of thrust at 0.5 MPa for securely stamping and forming thick metal components in automated fabrication lines.
Robotic Clamping
Provides the robust holding power required to lock large automotive molds or heavy machinery frames in place during machining.
Pallet Positioning
Delivers high push force to align, lift, or index heavy loaded pallets at conveyor transfer stations with a short 50 mm stroke.
Is the Airtac SAI125 Standard Air Cylinder SAI125AX50S the Right Cylinder?
Select this 125 mm bore model when an application demands higher force than the SAI100 bore, which offers 3927 N push at 0.5 MPa, but does not require the extreme 10053 N output of the SAI160. The 50 mm stroke is optimal for compact, high-force movements where a longer extension would waste cycle time and machine footprint. Because the standard SAI design relies solely on air pressure for movement, it cannot hold a load securely if air pressure drops or is exhausted; for critical drop-prevention safety, consider the SAIL variant with an air-released lock or the BSAI bidirectional clamp-lock cylinder.
As a true ISO 15552 profile cylinder, this unit serves as a direct drop-in replacement for any standard 125 mm bore ISO 15552 cylinder with a 50 mm stroke, G1/2 port, and matching mounting accessories like TC trunnion or CA clevis brackets. Ensure you specify the -S magnet option if your control system requires end-of-stroke position feedback.
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 SAI125 Standard Air Cylinder SAI125AX50S FAQ
At an operating pressure of 0.5 MPa, this 125 mm bore cylinder generates a push force of 6136 N and a pull force of 5734 N. At 0.7 MPa, the push force increases to 8590 N.
Yes, the SAI125X50-S is a genuine ISO 15552 profile cylinder. Its standardized mounting dimensions and G1/2 ports make it dimensionally interchangeable with other ISO 15552 cylinders of the same bore and stroke.
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