Airtac SAI125 Standard Air Cylinder SAI125X800
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125X800 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 800mm 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
- Stroke800 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125X800
The AirTAC SAI125X800 is a double-acting ISO 15552 profile cylinder engineered for heavy-duty linear motion. It provides a substantial push force of 6136 N and a pull force of 5734 N at 0.5 MPa, making it well-suited for demanding industrial applications requiring an 800 mm stroke. The extruded aluminum barrel design ensures rigid performance without tie-rods.
This model features a standard carbon steel piston rod and PT tapered port threads. For environments requiring position feedback, the barrel includes dual sensor grooves compatible with CMSE or DMSE switches when a magnet is specified. If your application involves high thermal exposure, NBR or Viton seal options are available alongside the standard TPU.
Airtac SAI125 Standard Air Cylinder SAI125X800 Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125X800 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 800 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 SAI125X800
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×800 | 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 SAI125X800 Is Used
Heavy Stamping
Provides the robust 6136 N push force required to actuate large mechanical presses and form thick metal components over an 800 mm travel distance.
Large Mold Handling
Moves substantial injection molds or tooling fixtures into and out of machining centers, leveraging the long stroke for deep reach operations.
Pallet Diverting
Shifts heavy loaded pallets across high-capacity transfer lines, utilizing the high pull force and extended stroke to reposition materials safely.
Is the Airtac SAI125 Standard Air Cylinder SAI125X800 the Right Cylinder?
Selecting this 125 mm bore is appropriate when 80 mm falls short, as the 80 mm variant only yields 2513 N of push force at 0.5 MPa compared to the 6136 N offered here. The 800 mm stroke is fully supported up to the 1500 mm maximum standard stroke limit for this bore size. Operating speed spans 30-500 mm/s.
Because this stroke length is 800 mm, the extended rod is highly susceptible to bending under side loads. Implement an external guide rail or utilize a dedicated guided cylinder to prevent premature rod-bearing wear. Furthermore, standard double-acting cylinders drift when air pressure is removed; utilize the SAIL variant with an air-released lock if the mechanism must hold a load safely during an outage.
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 SAI125X800 FAQ
At an operating pressure of 0.5 MPa, this double-acting cylinder provides a push force of 6136 N and a pull force of 5734 N. At 0.7 MPa, the push force increases to 8590 N.
Yes, the SAI125X800 is dimensionally interchangeable per ISO 15552. It serves as a drop-in replacement for other ISO 15552 profile cylinders, provided you match the 125 mm bore, 800 mm stroke, G1/2 port, and mounting accessories.
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