Airtac SAI125 Standard Air Cylinder SAI125X950S
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125X950S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 950mm 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
- Stroke950 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125X950S
The AirTAC SAI125X950-S is a double-acting ISO 15552 profile cylinder engineered for substantial actuation tasks, providing 8590 N of push force and 5734 N of pull force at 0.7 MPa. Because the 950 mm stroke exceeds the standard 1500 mm maximum catalog stroke for this bore, it is manufactured as a non-standard, made-to-order unit. The extruded aluminum barrel design omits tie rods, offering a clean exterior that drops into existing ISO 15552 mounting interfaces.
This specific configuration includes a piston magnet for use with CMSE and DMSE series reed switches, which seat directly into the sensor grooves machined on both sides of the barrel. It features a robust carbon steel piston rod and utilizes PT tapered port threads for a reliable pneumatic connection. For higher temperature environments, the standard TPU seals can be swapped for Viton (H) elastomers.
Airtac SAI125 Standard Air Cylinder SAI125X950S Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125X950S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 950 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 SAI125X950S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×950 | 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 SAI125X950S Is Used
Large Material Handling
Ideal for pushing heavy pallets or transferring substantial workpieces across long 950 mm distances where the 6136 N push force at 0.5 MPa is fully utilized.
Extended Stroke Diverting
Serves as a long-reach diverter arm on wide conveyor systems, using the integrated magnet and CMSE sensors to confirm end-of-stroke positioning.
Heavy Press Assembly
Provides the necessary 8590 N force at 0.7 MPa to seat large bearings or heavy components into housings over an extended 950 mm travel distance.
Is the Airtac SAI125 Standard Air Cylinder SAI125X950S the Right Cylinder?
When selecting this cylinder, verify that the 8590 N output at 0.7 MPa is sufficient for your load; if higher force is required, stepping up to the 160 mm bore yields 14074 N at the same pressure. Conversely, the 100 mm bore provides 5497 N if a smaller footprint is acceptable. Because this unit features a 950 mm stroke, side loading is a critical concern—an unsupported rod of this length is highly susceptible to bending and premature rod-bearing wear. Implementing an external linear guide or switching to a guided cylinder is strongly recommended to manage lateral forces.
This model uses a G1/2 port and an M27x2 rod thread. It is dimensionally interchangeable per ISO 15552, allowing direct replacement of other profile cylinders sharing the same standard mounting interface. Remember that the adjustable air cushions at both ends only decelerate the piston near stroke end; they do not hold the load. If the application requires the load to be mechanically locked without live air pressure, utilize the SAIL (air-released lock) or BSAI (bidirectional clamp-lock) variants.
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 SAI125X950S FAQ
At 0.7 MPa operating pressure, this 125 mm bore cylinder generates 8590 N of push force and 5734 N of pull force. At 0.5 MPa, the push force is 6136 N.
Yes, the SAI series is a true ISO 15552 profile cylinder. It is dimensionally interchangeable with other cylinders built to the same ISO 15552 mounting interface, though the 950 mm stroke is a non-standard made-to-order length.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC SAI Cylinders
Request a Quote for Airtac SAI125 Standard Air Cylinder SAI125X950S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.