Airtac SAI125 Standard Air Cylinder SAI125X1500
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125X1500 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 1500mm 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
- Stroke1500 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125X1500
The AirTAC SAI125X1500 is a double-acting ISO 15552 profile cylinder featuring a robust 125mm bore and an extended 1500mm stroke. It generates 6136N of push force and 5734N of pull force at 0.5 MPa, making it well-suited for moving substantial masses across long linear distances. The extruded aluminum barrel omits tie rods while maintaining strict dimensional interchangeability with standard ISO 15552 mounting interfaces.
This configuration utilizes a standard carbon steel piston rod and PT tapered port threads. To support high-temperature environments up to 70 C, the seals can be upgraded from standard TPU to Viton (H). Note that the maximum standard stroke for this bore is 1500 mm; requesting a longer travel distance would require a custom made-to-order unit.
Airtac SAI125 Standard Air Cylinder SAI125X1500 Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125X1500 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 1500 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 SAI125X1500
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×1500 | 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 SAI125X1500 Is Used
Heavy Stamping
Provides the 6136N push force at 0.5 MPa required to actuate large mechanical presses and form heavy-gauge metal components.
Pallet Transfer
Utilizes the full 1500mm stroke to shift loaded pallets between parallel conveyor lines in automated warehousing systems.
Large Door Actuation
Drives the extended opening cycle of heavy industrial safety doors and machinery access panels requiring broad clearance.
Is the Airtac SAI125 Standard Air Cylinder SAI125X1500 the Right Cylinder?
Selecting this 125mm bore over the smaller 100mm version steps the 0.5 MPa push force up from 3927N to 6136N, providing the necessary thrust for heavy payloads. If your application requires less force, dropping to the 80mm bore yields 2513N. Because this model features a 1500mm stroke, the unsupported rod length is significant; side loads will cause rod-bearing bending and premature wear. You must use an external guide rail or a guided cylinder to prevent mechanical failure.
This unit uses a G1/2 port and an M20x1.5 rod thread. It lacks a magnet for sensors; add the -S suffix if you require CMSE or DMSE switches for end-position detection. As a double-acting cylinder, it relies on live air pressure to move in both directions. If pressure is lost or the valve is centered, the piston will drift. To hold a load safely without air, integrate an external rod lock or specify the SAIL (air-released lock) variant.
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 SAI125X1500 FAQ
At an operating pressure of 0.5 MPa, this 125mm bore cylinder provides 6136N of push force and 5734N of pull force. At 0.7 MPa, the push force increases to 8590N.
Yes, the SAI125X1500 is a profile cylinder built to ISO 15552 dimensional standards. It serves as a drop-in replacement for other ISO 15552 cylinders using the same mounting accessories and footprint.
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