Airtac SAI125 Standard Air Cylinder SAI125AX700S
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125AX700S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 700mm 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
- Stroke700 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125AX700S
The AirTAC SAI125X700-S is a double-acting ISO 15552 profile cylinder engineered for heavy-duty automation. It provides a substantial push force of 6136 N at 0.5 MPa and a pull force of 5734 N, scaling up to 8590 N at 0.7 MPa. The 700 mm stroke is ideal for manipulating large masses across extended travel distances. This specific configuration features a SUS420J2 stainless steel piston rod (material code A) for superior corrosion resistance in humid or mildly chemically exposed environments.
Because this unit includes the -S magnet option, the extruded aluminum barrel features sensor grooves on both sides for direct mounting of CMSE or DMSE series reed switches. Fluid must be filtered air at 40 microns, operating within a 30-500 mm/s speed range. The adjustable air cushions at both stroke ends are tuned to absorb the high kinetic energy generated by this bore size, preventing end-cap impact damage.
Airtac SAI125 Standard Air Cylinder SAI125AX700S Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125AX700S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 700 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 SAI125AX700S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×700 | 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 SAI125AX700S Is Used
Automotive Body Assembly
Provides the 6136 N push force at 0.5 MPa needed to clamp and locate heavy chassis components during robotic welding cycles.
Pallet Transfer Indexing
Utilizes the 700 mm stroke to push large loaded pallets from a main roller conveyor into a perpendicular machining cell.
Heavy Stamping Feed
Leverages the adjustable end cushions to safely cycle a heavy feed manipulator at up to 500 mm/s without shock loading.
Is the Airtac SAI125 Standard Air Cylinder SAI125AX700S the Right Cylinder?
When sizing this model, stepping down to a 100mm bore reduces the 0.5 MPa push force to 3927 N, while stepping up to a 160mm bore increases it to 10053 N. At 700 mm of stroke, the extended rod is highly susceptible to bending under side loads. To prevent premature rod-bearing wear or piston scoring, implement an external linear guide rail or select a fully guided cylinder rather than relying on the rod alone to support the payload.
This SAI125X700-S is dimensionally interchangeable per ISO 15552, meaning it serves as a drop-in replacement for other ISO 15552 profile cylinders without requiring custom mounting plates. It uses PT G1/2 threaded ports and is compatible with standard FA/FB flanges, TC trunnions, and LB foot brackets. Note that a standard SAI cannot hold a load safely if air pressure is lost; for vertical or gravity-loaded applications requiring fail-safe holding, specify the SAIL (air-released lock) or BSAI (bidirectional clamp-lock) variant instead of relying on the cushion.
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 SAI125AX700S 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 SAI125X700-S is a true ISO 15552 profile cylinder, making its mounting interface dimensionally interchangeable with other ISO 15552 cylinders of the same bore size.
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