Airtac SAI125 Standard Air Cylinder SAI125X125SH
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125X125SH is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 125mm 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
- Stroke125 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125X125SH
The AirTAC SAI125X125-S is a double-acting ISO 15552 profile cylinder engineered for heavy-duty automation. It generates 6136 N of push force and 5734 N of pull force at 0.5 MPa, making it well-suited for high-thrust tasks over a 125 mm stroke. The extruded aluminum barrel design omits tie rods, providing a clean profile that integrates seamlessly into standardized machinery layouts.
This specific configuration includes a piston magnet for non-contact position detection using CMSE or DMSE series reed switches along the dual sensor grooves. It is built with a carbon steel piston rod and high-temperature Viton (FKM) seals, expanding the operating temperature range up to 120°C for thermally demanding environments. Threaded PT ports ensure a secure, tapered pneumatic connection.
Airtac SAI125 Standard Air Cylinder SAI125X125SH Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125X125SH |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 125 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 SAI125X125SH
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×125 | 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 SAI125X125SH Is Used
Heavy Metal Stamping
Provides the 6136 N push force required to actuate large mechanical stamping presses and form heavy-gauge sheet metal components.
Injection Mold Ejection
Utilizes the high-temperature Viton seals and integrated magnet to reliably eject finished plastic parts from hot injection molds.
Pallet Diverting
Drives robust routing arms on high-mass conveyor lines, using the 125 mm stroke to push heavy pallets onto secondary processing tracks.
Is the Airtac SAI125 Standard Air Cylinder SAI125X125SH the Right Cylinder?
Select this 125 mm bore model when an application requires upward of 6000 N of thrust at 0.5 MPa and a 125 mm stroke is sufficient for the work cycle. If your process demands less force, stepping down to the 100 mm bore yields 3927 N of push force, while moving up to the 160 mm bore provides 10053 N for heavier loads. Because the stroke is under 300 mm, standard rod bearing bending is minimal, though external guides are always recommended for purely lateral loads.
As a dimensionally interchangeable ISO 15552 cylinder, this unit serves as a drop-in replacement for other ISO 15552 profile cylinders. It utilizes G1/2 ports and a 32 mm rod with an M27x2 thread. Note that the adjustable air cushions only decelerate the piston near stroke end; they do not hold a load. If your machine must maintain position without live air pressure, specify the SAIL (air-released lock) or BSAI (clamp-lock) variant instead.
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 SAI125X125SH FAQ
At 0.5 MPa, this 125 mm bore cylinder generates 6136 N of push force and 5734 N of pull force. At 0.7 MPa, the push force increases to 8590 N.
Yes, the SAI125X125-S is a profile cylinder dimensionally interchangeable per ISO 15552. It shares standard mounting dimensions, G1/2 ports, and an M27x2 rod thread, allowing it to serve as a drop-in replacement for other ISO 15552 profile cylinders.
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