Airtac SAI125 Standard Air Cylinder SAI125BX700S
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125BX700S 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 SAI125BX700S
The AirTAC SAI125X700-S is a double-acting ISO 15552 profile cylinder featuring a robust 125mm bore and a 700mm stroke. It delivers a substantial push force of 6136N at 0.5 MPa and a maximum theoretical force of 1251 kgf at 1.0 MPa. This makes the unit well-suited for heavy-duty automation requiring substantial linear thrust over an extended travel distance.
Configured with a SUS304 stainless steel rod (material code B), this model provides excellent corrosion resistance for demanding environments. The integrated magnet (-S) allows seamless operation with CMSE and DMSE sensor switches fitted into the dual-side barrel grooves. Fluid connections use PT tapered threads sized at G1/2.
Airtac SAI125 Standard Air Cylinder SAI125BX700S Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125BX700S |
|---|---|
| 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 SAI125BX700S
| 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 SAI125BX700S Is Used
Heavy Metal Stamping
Provides the 6136N push force required to actuate large mechanical stamping presses and heavy-gauge metal forming dies.
Automotive Assembly Jigs
Drives large-frame welding fixtures and positioning jigs in automotive body-in-white assembly lines using its 700mm travel.
Palletizing Mechanisms
Actuates heavy-load palletizing and material handling systems where robust 125mm bore thrust and extended reach are essential.
Is the Airtac SAI125 Standard Air Cylinder SAI125BX700S the Right Cylinder?
When specifying this actuator, verify whether the 6136N push force at 0.5 MPa is sufficient, or if stepping up to the 160mm bore is necessary, which yields 10053N. For applications needing less thrust, the 100mm bore provides 3927N. Because this model features a 700mm stroke, the extended rod is highly susceptible to bending under side loads; utilizing an external guide rail or a dedicated guided cylinder is strongly recommended to prevent premature rod-bearing wear.
This profile cylinder is dimensionally interchangeable per ISO 15552 standards, serving as a drop-in replacement for other ISO 15552 cylinders. To match this exact configuration, select a 125mm bore, 700mm stroke, G1/2 PT ports, and include the -S magnet option. If the machinery must maintain a position during a complete loss of air pressure, consider the SAIL variant with an air-released lock, as the standard adjustable air cushions only decelerate the piston near stroke end and do not hold loads.
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 SAI125BX700S FAQ
At a 0.5 MPa operating pressure, this 125mm bore cylinder provides a push force of 6136N and a pull force of 5734N. At 0.7 MPa, the push force increases to 8590N.
Yes, the SAI series is a genuine ISO 15552 profile cylinder. Its standardized mounting interface makes it dimensionally interchangeable with other ISO 15552 cylinders, serving as a drop-in replacement.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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