Airtac SAI125 Standard Air Cylinder SAI125X900
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125X900 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 900mm 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
- Stroke900 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125X900
The AirTAC SAI125X900 is a double-acting ISO 15552 profile cylinder engineered for heavy-duty automation. Delivering 6136 N of push force at 0.5 MPa, this 125mm bore unit handles substantial loads over its 900mm stroke. The extruded aluminum barrel omits tie-rods, presenting a clean exterior that resists contamination in rugged industrial environments.
Standard configuration includes a carbon steel piston rod for high tensile strength under demanding cycles. The cylinder body features integrated sensor grooves on both sides, allowing direct mounting of CMSE or DMSE switches when a magnet is specified. Adjustable air cushions at both ends absorb kinetic energy, while standard PT tapered G1/2 ports ensure a secure, leak-free pneumatic connection.
Airtac SAI125 Standard Air Cylinder SAI125X900 Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125X900 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 900 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 SAI125X900
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×900 | 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 SAI125X900 Is Used
Heavy Stamping
Provides the 6136 N push force required to actuate large mechanical stamping presses over long travel distances.
Automated Assembly
Drives massive pallet lifts and heavy structural components through 900mm of vertical or horizontal travel.
Bulk Material Handling
Indexes heavy bulk material gates or large diverters in high-capacity aggregate and mineral processing lines.
Is the Airtac SAI125 Standard Air Cylinder SAI125X900 the Right Cylinder?
With a 900mm stroke, this model requires careful management of side loads to prevent rod-bearing bending. Utilizing an external guide rail or a dedicated guided cylinder is strongly recommended to prevent premature wear. If an application demands position holding without live air pressure, the standard SAI will drift; select the SAIL lock or BSAI bidirectional clamp-lock variant for secure mid-stroke retention. This 125mm bore provides 6136 N at 0.5 MPa; step down to an 80mm bore (2513 N) for lighter duties, or up to 160mm (10053 N) for extreme force. It serves as a drop-in replacement for any ISO 15552 cylinder with a 125mm bore, 900mm stroke, G1/2 port, and matching mounting accessories like the FA flange.
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 SAI125X900 FAQ
At 0.5 MPa it generates 6136 N of push force and 5734 N of pull force. At 0.7 MPa, the push force increases to 8590 N.
Yes. The SAI125X900 is dimensionally interchangeable per ISO 15552. It serves as a drop-in replacement for other ISO 15552 profile cylinders with a 125mm bore, 900mm stroke, and G1/2 port.
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Covers non-human-caused product damage.
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