Airtac SAI125 Standard Air Cylinder SAI125BX130
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125BX130 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 130mm 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
- Stroke130 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125BX130
The AirTAC SAI125X130 is a double-acting ISO 15552 profile cylinder engineered for heavy-duty automation. It delivers a robust push force of 6136 N at 0.5 MPa, making it well-suited for high-thrust pressing and heavy load actuation over its 130 mm stroke. The extruded aluminum barrel design omits tie rods, providing a clean exterior that simplifies mounting and sensor placement.
This specific configuration utilizes a SUS304 stainless steel piston rod (material code B), offering superior corrosion resistance for harsh or washdown environments. Fluid ports feature PT tapered threading. For applications requiring end-of-stroke position detection, the barrel includes integrated sensor grooves on both sides, though a magnet (-S suffix) must be specified to enable CMSE or DMSE switch operation.
Airtac SAI125 Standard Air Cylinder SAI125BX130 Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125BX130 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 130 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 SAI125BX130
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×130 | 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 SAI125BX130 Is Used
Heavy-Duty Pressing
Applies 6136 N of force at 0.5 MPa for seating bearings, stamping components, or forming light-gauge materials in automated machinery.
Industrial Clamping
Secures heavy workpieces during machining or welding operations, utilizing the SUS304 rod for resilience in harsh manufacturing environments.
Pallet Diverting
Actuates heavy-duty diverters or stops on conveyor lines, with the 130 mm stroke providing sufficient travel to redirect large pallets.
Is the Airtac SAI125 Standard Air Cylinder SAI125BX130 the Right Cylinder?
Selecting this 125 mm bore cylinder is appropriate when application thrust requirements exceed the 3927 N (at 0.5 MPa) capacity of the 100 mm variant, but do not necessitate stepping up to the 160 mm bore's 10053 N output. The 130 mm stroke provides a moderate extension length ideal for compact, high-force operations. Operating speed for this bore size ranges from 30-500 mm/s.
Because the stroke is under 300 mm, rod-bearing bending stress from side loads is less pronounced than in longer strokes, but external guides should still be used to prevent premature seal wear if the load is not axially rigid. Note that the adjustable air cushions at both ends decelerate the piston to prevent endcap impact, but they do not function as a locking mechanism; if the pneumatic supply is lost, the load will drift. For position-holding requirements without live pressure, consider the SAIL or BSAI locking variants. As a true ISO 15552 dimensionally interchangeable cylinder, it serves as a drop-in replacement for other standard profile cylinders with matching 125 mm bore, 130 mm stroke, PT G1/2 ports, and compatible FA/FB flange or TC trunnion mountings.
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 SAI125BX130 FAQ
At a standard operating pressure of 0.5 MPa, this 125 mm bore cylinder generates a push force of 6136 N and a pull force of 5734 N. If pressure is increased to 0.7 MPa, the push force rises to 8590 N.
Yes. The SAI125X130 is built to exact ISO 15552 dimensional standards, making it a drop-in replacement for any standard profile cylinder with the same 125 mm bore, 130 mm stroke, and G1/2 port size, provided your mounting hardware matches standard FA, LB, or TC accessories.
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