Airtac SAI125 Standard Air Cylinder SAI125BX1000
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125BX1000 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 1000mm 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
- Stroke1000 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125BX1000
The AirTAC SAI125X1000 is a double-acting ISO 15552 profile cylinder engineered for heavy-duty positioning, delivering a robust 8590 N of push force at 0.7 MPa. Its 1000 mm stroke falls within the standard 1500 mm maximum for this bore, making it a readily available solution for long-travel automation tasks. The extruded aluminum barrel design omits traditional tie rods while maintaining strict dimensional interchangeability with other ISO 15552 cylinders.
For this specific configuration, the piston rod is constructed from SUS304 stainless steel (code B), offering superior corrosion resistance in humid or washdown environments. The barrel features integrated sensor grooves on both sides, allowing for direct mounting of CMSE or DMSE series switches if position feedback is required in the future.
Airtac SAI125 Standard Air Cylinder SAI125BX1000 Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125BX1000 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 1000 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 SAI125BX1000
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×1000 | 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 SAI125BX1000 Is Used
Heavy Material Handling
Drives large palletizing gantries and heavy component transfer arms over the full 1000 mm travel distance in automotive assembly plants.
Long-Travel Diverters
Actuates heavy-duty lane diverter gates on high-throughput packaging conveyors where substantial thrust is required across a wide span.
Large Press Loading
Positions heavy metal blanks into large hydraulic presses, utilizing the 125 mm bore's high thrust capacity for reliable movement.
Is the Airtac SAI125 Standard Air Cylinder SAI125BX1000 the Right Cylinder?
When sizing this actuator, note that stepping down to a 100 mm bore reduces the 0.5 MPa push force to 3927 N, whereas moving up to a 160 mm bore yields 10053 N at the same pressure. Because this model features a 1000 mm stroke, the extended unsupported rod is highly susceptible to bending under side loads. To prevent premature rod-bearing wear, implement an external guide rail or utilize a fully guided cylinder to handle any lateral forces.
This SAI profile cylinder provides a drop-in replacement footprint for any ISO 15552 actuator, matching the 125 mm bore, 1000 mm stroke, and PT G1/2 port specifications. If the machinery requires the load to remain mechanically locked during a complete loss of air pressure, consider the SAIL variant with an air-released lock or the BSAI bidirectional clamp-lock cylinder, as the standard air cushion only decelerates the piston and does not hold position.
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 SAI125BX1000 FAQ
At 0.7 MPa operating pressure, this 125 mm bore cylinder generates 8590 N of push force and 5734 N of pull force. The maximum theoretical force at 1.0 MPa is 1251 kgf.
Yes, the SAI125X1000 is dimensionally interchangeable per ISO 15552 standards. You can directly swap it with other ISO 15552 profile cylinders matching the 125 mm bore, 1000 mm stroke, and G1/2 port dimensions.
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