Airtac SAI125 Standard Air Cylinder SAI125BX700
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125BX700 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 SAI125BX700
The AirTAC SAI125X700 is a double-acting ISO 15552 profile cylinder engineered for heavy-duty automation. It delivers a robust 8590 N push force at 0.7 MPa across a 700 mm stroke. The extruded aluminum barrel omits tie-rods, providing a clean exterior that resists debris buildup in demanding industrial environments.
This specific configuration is built with a SUS304 stainless steel piston rod (material code B) for superior corrosion resistance. It utilizes PT tapered port threads and operates without a magnet. If your workflow requires pneumatic locking under pressure loss, consider the related SAIL series for secure load holding.
Airtac SAI125 Standard Air Cylinder SAI125BX700 Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125BX700 |
|---|---|
| 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 SAI125BX700
| 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 SAI125BX700 Is Used
Heavy Metal Stamping
Provides the high clamping force needed to secure heavy steel plates during large-scale metal stamping and pressing operations.
Large Assembly Press
Drives large automotive or machinery components together over its 700 mm stroke, ensuring precise alignment during heavy mechanical assembly.
Pallet Handling
Actuates heavy-duty diverters and lifts on automated pallet conveyor lines, moving substantial loads with reliable 8590 N force.
Is the Airtac SAI125 Standard Air Cylinder SAI125BX700 the Right Cylinder?
Selecting this 125 mm bore provides substantial thrust (6136 N push at 0.5 MPa), stepping up from the 80 mm bore which yields 2513 N. The 700 mm stroke is well within the 1500 mm maximum standard stroke for this bore, but at this length the extended rod is highly susceptible to bending under side loads. Implementing an external guide rail or switching to a guided cylinder is strongly recommended to prevent premature rod-bearing wear.
As a true ISO 15552 profile cylinder, it serves as a drop-in replacement matching standard mounting interfaces. Ensure your setup accommodates the PT G1/2 port and pairs with appropriate accessories like FA flanges or CA clevises. Note that standard air cushions only decelerate the piston near stroke ends and will not hold a suspended load if air pressure drops.
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 SAI125BX700 FAQ
The SAI125X700 generates a push force of 6136 N at 0.5 MPa, 8590 N at 0.7 MPa, and 11045 N at 0.9 MPa. Its theoretical maximum force at 1.0 MPa is 1251 kgf.
Yes, the SAI125X700 is dimensionally interchangeable per ISO 15552. It shares standard mounting interfaces and can replace other ISO 15552 profile cylinders, provided your system uses the correct PT G1/2 port and matching accessories.
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