Airtac SAI125 Standard Air Cylinder SAI125AX120
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125AX120 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 120mm 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
- Stroke120 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125AX120
The AirTAC SAI125X120 is a double-acting ISO 15552 profile cylinder engineered for heavy-duty automation. It delivers a substantial 6136 N push force at 0.5 MPa, making it well-suited for pressing, lifting, and clamping tasks requiring a 120 mm travel distance. The extruded aluminum barrel design omits tie rods for a clean exterior.
Built to exact dimensional standards, this model serves as a drop-in replacement for other ISO 15552 cylinders. It features a SUS420J2 stainless steel rod for enhanced corrosion resistance and utilizes PT tapered port threads. The barrel includes dual-sided sensor grooves for mounting CMSE or DMSE switches if a magnet is added later.
Airtac SAI125 Standard Air Cylinder SAI125AX120 Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125AX120 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 120 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 SAI125AX120
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×120 | 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 SAI125AX120 Is Used
Heavy-Duty Stamping
Provides the robust 6136 N push force needed for forming and stamping rigid components in automated metalworking lines.
Pallet Ejection
Delivers reliable 120 mm travel to push heavy pallets or finished goods off high-throughput conveyor belts.
Industrial Clamping
Secures large workpieces during machining or welding operations, utilizing the bore's high thrust capacity for rigid holding.
Is the Airtac SAI125 Standard Air Cylinder SAI125AX120 the Right Cylinder?
Select this 125 mm bore when 80 mm (2513 N at 0.5 MPa) lacks the thrust for high-force tasks, but before stepping up to the 160 mm bore. The 120 mm stroke is optimal for compact, high-power cycles. Since the stroke is under 300 mm, side-load stress on the rod bearing is minimal, though external guides are always recommended for rigid payloads.
This standard configuration uses PT tapered ports and a SUS420J2 rod. Note that the adjustable air cushions only decelerate the piston near the end of travel; they do not hold a load. If your application requires fail-safe position holding without air pressure, consider 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 SAI125AX120 FAQ
At 0.5 MPa operating pressure, this 125 mm bore cylinder generates 6136 N of push force and 5734 N of pull force. At 0.7 MPa, the push force increases to 8590 N.
Yes, the SAI125X120 is dimensionally interchangeable per ISO 15552 mounting standards. It uses a PT port and standard mounting accessories like FA flanges or TC trunnions for easy drop-in replacement.
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 SAI125AX120
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.