Airtac SAI125 Standard Air Cylinder SAI125X125
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125X125 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 125mm 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
- Stroke125 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125X125
The AirTAC SAI125X125 is a double-acting ISO 15552 profile cylinder built for heavy-duty operations. It delivers 6136 N of push force and 5734 N of pull force at 0.5 MPa, making it well-suited for high-thrust automation tasks. The extruded aluminum barrel omits tie-rods, presenting a clean exterior that speeds up assembly and maintenance.
This specific unit features a carbon steel piston rod and utilizes PT tapered port threads. Because it lacks a standard magnet, external reed or solid-state sensors cannot be directly mounted. For operations needing intermediate stopping power, the SAIL variant offers an integrated air-released lock to hold loads securely without continuous air pressure.
Airtac SAI125 Standard Air Cylinder SAI125X125 Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125X125 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 125 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 SAI125X125
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×125 | 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 SAI125X125 Is Used
Heavy-Duty Stamping
Provides the robust 6136 N push force required to form and stamp thick metal components in automated fabrication lines.
Pallet Diversion
Actuates heavy-duty diverter arms to route loaded pallets along high-capacity material handling conveyors.
Injection Molding Extraction
Drives robust mechanical arms to extract molded parts from large injection molding machines safely.
Is the Airtac SAI125 Standard Air Cylinder SAI125X125 the Right Cylinder?
Selecting this 125 mm bore makes sense when a 100 mm bore (providing 3927 N push at 0.5 MPa) is insufficient for your load, but a 160 mm bore is physically too large. The 125 mm stroke provides ample travel for clamping, lifting, or pressing tasks. If your mechanism experiences significant side loads, pair this cylinder with an external guide rail to prevent rod-bearing wear.
As a true ISO 15552 profile cylinder, this model is dimensionally interchangeable with other ISO 15552 cylinders. Ensure your setup matches the 125 mm bore, 125 mm stroke, G1/2 port, and desired mounting accessory (such as a CA clevis or LB foot). Remember that the standard adjustable air cushions only decelerate the piston near the end of travel; they do not hold a load pneumatically.
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 SAI125X125 FAQ
At an operating pressure of 0.5 MPa, 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 SAI125X125 is a genuine ISO 15552 profile cylinder, meaning its mounting dimensions are fully interchangeable with other ISO 15552 cylinders from various manufacturers.
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Covers non-human-caused product damage.
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Standard models usually ship in 3-4 days.
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