Airtac SAI125 Standard Air Cylinder SAI125X1500S
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125X1500S 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 SAI125X1500S
The SAI125X1500-S is a double-acting ISO 15552 profile cylinder engineered for heavy-duty automation. Delivering a robust push force of 6136 N at 0.5 MPa and 8590 N at 0.7 MPa, it handles substantial loads with precision. The 1500 mm stroke is ideal for long-travel material handling and large press operations. This variant includes a piston magnet for CMSE and DMSE sensor integration.
This model features a standard carbon steel piston rod for high tensile strength and wear resistance. The extruded aluminum barrel design incorporates sensor grooves on both sides, allowing flexible switch mounting. Operating at a controlled speed range of 30-500 mm/s, it utilizes adjustable air cushions at both ends to smoothly decelerate the massive 125 mm piston at stroke completion.
Airtac SAI125 Standard Air Cylinder SAI125X1500S Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125X1500S |
|---|---|
| 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 SAI125X1500S
| 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 SAI125X1500S Is Used
Large Press Ejection
Provides the 6136 N push force at 0.5 MPa required to eject heavy stamped parts from large hydraulic presses over a 1500 mm travel distance.
Automotive Assembly Transfer
Moves heavy chassis components or subassemblies across long robotic welding cells, utilizing the 125 mm bore thrust and integrated CMSE position sensing.
Pallet Handling Conveyor
Actuates large diverters and heavy-duty pushers in automated storage systems where the 1500 mm stroke easily spans wide conveyor lanes.
Is the Airtac SAI125 Standard Air Cylinder SAI125X1500S the Right Cylinder?
Selecting this 125 mm bore cylinder makes sense when 100 mm bore models (providing 5497 N at 0.7 MPa) lack the thrust for your heavy payload. If your application requires less force and faster cycle times, stepping down to an 80 mm bore (3518 N at 0.7 MPa) is recommended. Ensure your compressed air supply is filtered to 40 um to protect the TPU seals and cylinder walls.
Because this unit features a 1500 mm stroke, the extended rod is highly susceptible to bending under side loads. You must use external guide rails or a guided cylinder carriage to prevent rod-bearing damage and premature wear. Note that the standard SAI does not hold loads safely upon air loss; for vertical or gravity-loaded applications requiring fail-safe holding, specify the SAIL (air-released lock) or BSAI (bidirectional clamp-lock) variant. This SAI125X1500-S is dimensionally interchangeable per ISO 15552 standards, utilizing a G1/2 PT port, and supports FA/FB flange or TC trunnion mounts.
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 SAI125X1500S FAQ
This 125 mm bore cylinder generates a push force of 6136 N at 0.5 MPa, 8590 N at 0.7 MPa, and 11045 N at 0.9 MPa. The pull force at 0.5 MPa is 5734 N.
Yes, the SAI125X1500-S is dimensionally interchangeable per ISO 15552 profile cylinder standards. It shares standard mounting interfaces and G1/2 port locations, allowing it to serve as a drop-in replacement for other ISO 15552 cylinders.
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