Airtac SAI125 Standard Air Cylinder SAI125BX600
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125BX600 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 600mm 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
- Stroke600 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125BX600
The AirTAC SAI125X600 is a double-acting ISO 15552 profile cylinder engineered for heavy-duty positioning. It delivers 8590 N of push force at 0.7 MPa, making it well-suited for high-inertia loads over its 600 mm stroke. The extruded aluminum barrel omits tie-rods for a clean exterior while maintaining strict dimensional interchangeability with other ISO 15552 cylinders.
This specific configuration features a SUS304 stainless steel piston rod (material code B) for superior corrosion resistance in humid or washdown environments. It uses PT tapered port threads and operates without a magnet. If your application requires end-of-stroke signaling, you would need the -S magnet option to pair with CMSE or DMSE sensors in the dual-side sensor grooves.
Airtac SAI125 Standard Air Cylinder SAI125BX600 Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125BX600 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 600 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 SAI125BX600
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×600 | 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 SAI125BX600 Is Used
Heavy Machinery Forming
Provides the 8590 N push force required to seat heavy components and form metal parts within 600 mm of travel.
Pallet Transfer System
Shifts substantial palletized loads on assembly lines, utilizing adjustable cushions to stop 600 mm strokes smoothly.
Automated Press Stand
Applies steady clamping pressure in automated press stands, benefiting from the SUS304 rod in secondary machining cells.
Is the Airtac SAI125 Standard Air Cylinder SAI125BX600 the Right Cylinder?
With a 125 mm bore generating 6136 N at 0.5 MPa, stepping down to an 80 mm bore yields 2513 N, while moving up to a 160 mm bore provides 10053 N. For this 600 mm stroke, the unsupported rod length is significant; side loads will cause rod-bearing bending and premature seal wear. To manage this, use an external guide rail or select a guided cylinder to handle off-center loads.
The adjustable air cushions at both ends decelerate the piston to prevent impact damage, but they do not lock the rod. If the machine loses air pressure, the load will drift. For fail-safe holding without live pressure, specify the SAIL (air-released lock) variant or an external rod lock. Replacement matching requires a 125 mm bore, 600 mm stroke, G1/2 port, and your preferred mounting accessory (such as CA clevis or TC trunnion).
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 SAI125BX600 FAQ
At 0.7 MPa operating pressure, the SAI125X600 generates 8590 N of push force and 5734 N of pull force. It can reach a theoretical maximum of 1251 kgf at 1.0 MPa.
Yes, the SAI125X600 is dimensionally interchangeable per ISO 15552. You can drop it in as a replacement for other ISO 15552 cylinders with a 125 mm bore, 600 mm stroke, and G1/2 port, provided your mounting interface matches.
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