Airtac SAI125 Standard Air Cylinder SAI125X115
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125X115 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 SAI125X115
The AirTAC SAI125X115 is a double-acting ISO 15552 profile cylinder delivering 6136N push and 5734N pull at 0.5 MPa. Its 115mm stroke is well suited for high-force clamping and heavy material handling. The extruded aluminum barrel omits tie-rods for a compact footprint.
This model uses a standard carbon steel piston rod and PT tapered port threads. Since no magnet is specified, it lacks sensor tracks; add the -S option if CMSE or DMSE switches are needed. For multi-directional clamping without live pressure, consider the BSAI clamp-lock variant.
Airtac SAI125 Standard Air Cylinder SAI125X115 Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125X115 |
|---|---|
| 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 SAI125X115
| 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 SAI125X115 Is Used
Heavy Stamping
Provides the 6136N push force required to seat bearings or form heavy gauge metal in stamping presses.
Pallet Diverting
Actuates high-mass pallet diverters or routing gates where substantial side-loads are managed by external guides.
Injection Molding
Handles the robust extraction of heavy molded parts from industrial injection molding machinery.
Is the Airtac SAI125 Standard Air Cylinder SAI125X115 the Right Cylinder?
At 0.5 MPa this 125mm bore provides 6136N thrust; step down to the 80mm bore for 2513N if your load is lighter, or up to the 160mm bore for 10053N if higher force is required. The 115mm stroke is under the 300mm side-load threshold, but heavy radial loads still require external guides. This cylinder uses a G1/2 port, M27x2 rod thread, and 40mm cushion. It is dimensionally interchangeable per ISO 15552, supporting FA flange or TC trunnion mounts. Note that exhausting air pressure will cause the piston to drift; use the SAIL variant if position holding is mandatory.
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 SAI125X115 FAQ
At 0.5 MPa it provides 6136N of push force and 5734N of pull force. At 0.7 MPa the push force increases to 8590N.
No, a standard SAI cylinder will drift downward if air pressure is lost or exhausted. To hold a suspended load securely, use the SAIL lock variant or an external pilot-operated check valve.
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