Airtac SAI125 Standard Air Cylinder SAI125X15S
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125X15S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 15mm 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
- Stroke15 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125X15S
The AirTAC SAI125X15-S is a double-acting ISO 15552 profile cylinder engineered for high-force, short-stroke applications. Operating at 0.5 MPa, it generates a robust 6136 N of push force and 5734 N of pull force. The 15 mm stroke is a custom non-standard configuration, making it highly effective for compact clamping or pressing operations where space is strictly limited but heavy thrust is required.
This specific configuration includes a built-in magnet (-S) for proximity sensing, allowing seamless integration with CMSE or DMSE switches mounted into the dual sensor grooves on the extruded aluminum barrel. The piston rod is constructed from standard carbon steel, and the body utilizes PT tapered port threads for a secure, leak-free pneumatic connection.
Airtac SAI125 Standard Air Cylinder SAI125X15S Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125X15S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 15 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 SAI125X15S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×15 | 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 SAI125X15S Is Used
Heavy-Duty Stamping
Provides 6136 N of thrust at 0.5 MPa for short-stroke metal stamping, marking, and embossing tasks.
Pallet Clamping
Ideal for securing heavy pallets or workpieces in automated machining centers where a 15 mm movement is sufficient.
Component Seating
Exerts high force over a very short distance to press bearings or pins into housings without requiring a full-length cylinder.
Is the Airtac SAI125 Standard Air Cylinder SAI125X15S the Right Cylinder?
Selecting this 125 mm bore over the smaller 100 mm bore provides a significant force upgrade, stepping up from 3927 N to 6136 N at 0.5 MPa. If the 15 mm stroke is too short for your cycle requirements, consider a standard 25 mm stroke. Because this is a non-standard 15 mm stroke, ensure your machinery's end-of-stroke buffers and tooling plates accommodate the custom dimensions.
For applications that require the load to be physically held in place without continuous air pressure, a standard SAI cylinder will not suffice, as the piston will drift upon pressure loss. In those scenarios, you should specify the SAIL variant with an air-released lock, or the BSAI bidirectional clamp-lock cylinder. As a true ISO 15552 profile cylinder, this model is dimensionally interchangeable with other ISO 15552 cylinders using identical 125 mm bores, 15 mm strokes, and PT porting.
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 SAI125X15S FAQ
At 0.5 MPa operating pressure, the push force is 6136 N and the pull force is 5734 N. At 0.7 MPa, the push force increases to 8590 N.
No, the standard SAI cylinder does not hold loads without live air pressure. If pressure drops, the piston will drift. For fail-safe load holding, use the SAIL (air-released lock) or BSAI (clamp-lock) variants.
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 SAI125X15S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.