Airtac SAI125 Standard Air Cylinder SAI125AX115S
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125AX115S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 115mm 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
- Stroke115 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125AX115S
The AirTAC SAI125X115-S is a double-acting ISO 15552 profile cylinder engineered for heavy-duty automation. Delivering a robust push force of 6136 N at 0.5 MPa, this 125mm bore unit is built to execute demanding transitions over its 115mm stroke. The extruded aluminum barrel omits tie-rods for a clean, standardized mounting interface that drops directly into ISO 15552 machinery footprints.
This specific configuration includes a magnet (-S) for proximity sensing via CMSE or DMSE switches housed in the dual-side sensor grooves. It is further upgraded with an SUS420J2 stainless steel piston rod (material code A) for superior corrosion resistance, and utilizes PT tapered port threads to guarantee a positive, high-pressure pneumatic seal.
Airtac SAI125 Standard Air Cylinder SAI125AX115S Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125AX115S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 115 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 SAI125AX115S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×115 | 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 SAI125AX115S Is Used
Heavy-Duty Stamping
Generates 8590 N of push force at 0.7 MPa, providing the necessary muscle to seat bearings and form thick metal components in automated presses.
Plastic Injection Molding
Drives large mold ejection plates and heavy knockout assemblies where high pull force (5734 N at 0.5 MPa) and reliable extraction are critical.
Bulk Material Diversion
Powers heavy-duty diverter arms and sorting gates on high-throughput packaging lines, utilizing its 115mm stroke for rapid lateral transitions.
Is the Airtac SAI125 Standard Air Cylinder SAI125AX115S the Right Cylinder?
Selecting this 125mm bore is ideal when a 100mm bore (providing 3927 N at 0.5 MPa) lacks sufficient thrust, yet a larger 160mm unit is unnecessary for a 115mm stroke. Operating speed spans 30-500 mm/s, tailored for the higher inertia of large pistons. The adjustable air cushions at both ends decelerate the rod near stroke endpoints, but they do not lock the load; if your application requires dead-stop holding without continuous air pressure, specify the SAIL (air-released lock) or BSAI (bidirectional clamp-lock) variant instead.
For a true drop-in replacement, match the 125mm bore, 115mm stroke, G1/2 port, and your required mounting accessory (such as LB foot or TC trunnion). The integrated -S magnet ensures immediate compatibility with CMSE/DMSE reed switches.
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 SAI125AX115S FAQ
At 0.5 MPa, it provides 6136 N of push force and 5734 N of pull force. If operating pressure increases to 0.7 MPa, the push force rises to 8590 N.
Yes. The SAI is a profile cylinder dimensionally interchangeable per ISO 15552, allowing it to serve as a drop-in replacement for other ISO 15552 standard cylinders when matching the 125mm bore and mounting dimensions.
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 SAI125AX115S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.