Airtac SAI125 Standard Air Cylinder SAI125X240S
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125X240S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 240mm 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
- Stroke240 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125X240S
The AirTAC SAI125X240-S is a double-acting ISO 15552 profile cylinder engineered for heavy-duty automation. Delivering a robust 6136 N of push force at 0.5 MPa, this 125 mm bore unit is built to handle substantial loads across its 240 mm stroke. The extruded aluminum barrel design omits tie-rods, providing a clean profile that drops directly into standardized ISO 15552 mounting footprints.
Configured with a magnetic piston (-S), this model supports position detection via CMSE or DMSE reed switches fitted into the sensor grooves on both sides of the barrel. It utilizes a standard carbon steel piston rod and a PT tapered port thread. For environments requiring flame resistance or chemical stability, the seal configuration can be upgraded from standard TPU to NBR or high-temperature Viton (H).
Airtac SAI125 Standard Air Cylinder SAI125X240S Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125X240S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 240 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 SAI125X240S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×240 | 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 SAI125X240S Is Used
Heavy-Duty Stamping
Provides the high thrust necessary for pressing, forming, and stamping rigid metal components in automated fabrication lines.
Large Mold Handling
Actuates heavy injection molds or tooling fixtures, utilizing the magnetic piston for precise end-of-stroke confirmation.
Pallet Diverting
Drives robust routing arms or stops to redirect heavy pallets along high-capacity material handling conveyors.
Is the Airtac SAI125 Standard Air Cylinder SAI125X240S the Right Cylinder?
Selecting this 125 mm bore is ideal when a 100 mm bore (offering 3927 N at 0.5 MPa) cannot generate sufficient thrust, but you want to avoid the mass and air consumption of a 160 mm cylinder. Because this model features a 240 mm stroke, it remains well within standard structural limits without requiring external guide rods to prevent rod-bearing bending.
As a true ISO 15552 cylinder, it serves as a seamless, dimensionally interchangeable replacement for competing brands utilizing the same standard. To integrate this unit, specify the G1/2 port, select your preferred mounting accessory (such as LB foot or TC trunnion), and ensure the -S magnet option is paired with appropriate CMSE or DMSE sensors. Note that the adjustable air cushions decelerate the piston at stroke ends but do not function as a locking mechanism; if pneumatic pressure is lost, the load will drift. Use the SAIL or BSAI variant if dead-end holding is required.
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 SAI125X240S FAQ
At a 0.5 MPa operating pressure, 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 SAI125X240-S is dimensionally interchangeable per ISO 15552 standards. You can drop it into existing mounts matching that interface, provided you accommodate the G1/2 port size.
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 SAI125X240S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.