Airtac SAI125 Standard Air Cylinder SAI125BX750
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125BX750 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 750mm 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
- Stroke750 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125BX750
The AirTAC SAI125X750 is a double-acting ISO 15552 profile cylinder engineered for heavy-duty automation. It provides a robust push force of 6136 N at 0.5 MPa, making it well-suited for moving substantial payloads along its 750 mm stroke. The extruded aluminum barrel design omits tie-rods, offering a clean exterior that simplifies sensor mounting.
This specific configuration is built with a SUS304 stainless steel piston rod (material code B) for superior corrosion resistance in harsh environments. It utilizes PT tapered port threads, and because no magnet is specified, it operates without integrated position sensing. Adjustable air cushions at both ends absorb kinetic energy, operating reliably at speeds of 30-500 mm/s.
Airtac SAI125 Standard Air Cylinder SAI125BX750 Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125BX750 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 750 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 SAI125BX750
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×750 | 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 SAI125BX750 Is Used
Heavy Stamping Presses
Provides the high clamping force required to hold thick metal sheets securely in place during heavy-duty stamping and punching operations.
Pallet Diverters
Uses the long 750 mm stroke to push fully loaded pallets smoothly across high-throughput packaging and distribution conveyor lines.
Large Mold Handling
Actuates heavy injection molds or tooling fixtures into position within industrial machinery, leveraging the robust 125 mm bore for reliable power.
Is the Airtac SAI125 Standard Air Cylinder SAI125BX750 the Right Cylinder?
Selecting this 125 mm bore cylinder is ideal when applications require upward of 6136 N of push force at 0.5 MPa, bridging the gap between the 80 mm bore (2513 N) and the massive 160 mm bore (10053 N). The 750 mm stroke provides extensive reach, but at this length the extended rod is highly susceptible to bending under side loads. To prevent premature rod-bearing wear, implement an external guide rail or utilize a guided cylinder design.
As a true ISO 15552 profile cylinder, this unit serves as a drop-in replacement for any standard ISO 15552 mounting interface. It uses a G1/2 port, an M27x2 rod thread, and accepts standard mounting accessories like FA flanges or TC trunnions. If the machinery loses air pressure, this standard cylinder cannot hold its load and will drift; for fail-safe holding, specify the SAIL variant with an air-released lock or an external pilot check valve.
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 SAI125BX750 FAQ
At a standard operating pressure of 0.5 MPa, this 125 mm bore cylinder generates 6136 N of push force and 5734 N of pull force. If pressure is increased to 0.7 MPa, the push force rises to 8590 N.
Yes, the SAI125X750 is dimensionally interchangeable per ISO 15552. You can drop it directly into existing mounts matching the standard 125 mm bore footprint, G1/2 port, and M27x2 rod thread without modifying the machinery.
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