Airtac SAI125 Standard Air Cylinder SAI125X750N
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125X750N is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 750mm 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
- Stroke750 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125X750N
The AirTAC SAI125X750 is a double-acting ISO 15552 profile cylinder built for heavy-duty automation. It delivers 6136 N of push force and 5734 N of pull force at 0.5 MPa. The 750 mm stroke provides the extended travel needed for large presses and material transfer. A standard carbon steel piston rod handles high axial stresses, while NBR seals ensure reliable wear resistance in standard temperature environments.
This model features a 125 mm bore and a PT tapered port thread. Because it is a profile cylinder rather than a tie-rod design, it integrates cleanly into modern ISO 15552 machinery. For applications requiring mid-stroke locking, this base SAI can be swapped for the SAIL variant, which adds an air-released lock for fail-safe load holding.
Airtac SAI125 Standard Air Cylinder SAI125X750N Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125X750N |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 750 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 SAI125X750N
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×750 | 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 SAI125X750N Is Used
Heavy Stamping Presses
Generates 8590 N of push force at 0.7 MPa to drive large metal forming and stamping dies across the 750 mm travel distance.
Pallet Transfer Systems
Moves heavy loaded pallets between conveyor lines, utilizing the extended stroke to bridge wide machine gaps safely.
Large Assembly Jigs
Actuates massive clamping arms on automotive assembly jigs where high thrust and long reach are simultaneously required.
Is the Airtac SAI125 Standard Air Cylinder SAI125X750N the Right Cylinder?
Choose this 125 mm bore when 80 mm (2513 N at 0.5 MPa) lacks the thrust for your heaviest loads. The 750 mm stroke is substantial, so an unsupported piston rod is vulnerable to bending under side loads. To prevent premature rod-bearing wear, mount an external guide rail or specify a fully guided cylinder to absorb lateral forces.
If your machinery loses air pressure, this standard cylinder will drift and cannot hold a load. Use an external pilot-operated check valve or switch to the SAIL lock variant for critical safety stops. To match this unit for an ISO 15552 replacement, verify the 125 mm bore, 750 mm stroke, PT G1/2 ports, and select an appropriate mounting accessory like a TC trunnion. A magnet (-S) is not included on this configuration.
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 SAI125X750N FAQ
At 0.5 MPa, it provides 6136 N of push force and 5734 N of pull force. At 0.7 MPa, the push force increases to 8590 N.
Yes, the SAI125X750 is a genuine ISO 15552 profile cylinder, making it dimensionally interchangeable with other ISO 15552 standard cylinders of the same bore and stroke.
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Standard models usually ship in 3-4 days.
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