Airtac SAI125 Standard Air Cylinder SAI125X5
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125X5 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 5mm 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
- Stroke5 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125X5
The AirTAC SAI125X5 is a double-acting ISO 15552 profile cylinder featuring a massive 125mm bore and a specialized 5mm stroke. It delivers a robust 6136N of push force at just 0.5 MPa, escalating to 8590N at 0.7 MPa. This non-standard, made-to-order short stroke is engineered for high-force clamping or pressing tasks where absolute minimal travel is required.
Unlike standard tie-rod designs, this extruded aluminum profile barrel integrates sensor grooves on both sides. While this specific unit lacks a magnet for proximity sensing, it comes equipped with a standard carbon steel piston rod and a PT tapered port thread. For operations requiring high-temperature resistance, the standard TPU seals can be swapped for Viton (H) alternatives.
Airtac SAI125 Standard Air Cylinder SAI125X5 Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125X5 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 5 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 SAI125X5
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×5 | 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 SAI125X5 Is Used
Heavy-Duty Pressing
Provides 8590N of force at 0.7 MPa for high-impact stamping and pressing operations within a 5mm travel distance.
Rigid Clamping
Secures heavy workpieces in machining fixtures where minimal stroke and maximum holding power are critical.
Short-Stroke Ejection
Ejects dense components from molds or presses instantly without wasting cycle time on long rod extension.
Is the Airtac SAI125 Standard Air Cylinder SAI125X5 the Right Cylinder?
Choosing this 125mm bore over the smaller 100mm variant provides a significant leap in thrust, jumping from 3927N to 6136N at 0.5 MPa. The extremely short 5mm stroke eliminates rod-bearing bending concerns typical of longer strokes, making it inherently rigid against side loads. Because it is a double-acting cylinder, it relies on continuous air pressure to maintain position; if your application must hold a load safely during a pneumatic failure, consider the SAIL variant with an air-released lock or the BSAI bidirectional clamp-lock.
As a genuine ISO 15552 cylinder, this model ensures a drop-in replacement for other ISO 15552 profile cylinders. Confirm your mounting interface requires a 125mm bore, 5mm stroke, G1/2 port, and compatible accessories like the FA flange or CA clevis.
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 SAI125X5 FAQ
At a standard operating pressure of 0.5 MPa, this 125mm bore cylinder provides 6136N of push force and 5734N of pull force. If pressure is increased to 0.7 MPa, the push force reaches 8590N.
Yes, the SAI125X5 is a true ISO 15552 profile cylinder. Its standardized mounting dimensions make it a direct, drop-in replacement for other ISO 15552 cylinders, ensuring easy integration into existing setups.
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