Airtac SAI125 Standard Air Cylinder SAI125BX950S
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125BX950S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 950mm 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
- Stroke950 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125BX950S
The AirTAC SAI125X950-S is a double-acting ISO 15552 profile cylinder engineered for heavy-duty automation. Delivering a push force of 6136 N and a pull force of 5734 N at 0.5 MPa, this 125 mm bore unit is built to execute substantial mechanical work over its 950 mm travel distance. The extended stroke is classified as a non-standard made-to-order length, pushing toward the 1500 mm maximum limit to accommodate specialized machinery layouts.
Configured with a -S magnet and a SUS304 stainless steel rod (option B), this model is optimized for reliable position feedback when paired with CMSE or DMSE sensor switches along the dual-side barrel grooves. It utilizes PT tapered port threads and operates at speeds of 30-500 mm/s, ensuring robust and trackable motion control for demanding industrial environments.
Airtac SAI125 Standard Air Cylinder SAI125BX950S Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125BX950S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 950 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 SAI125BX950S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×950 | 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 SAI125BX950S Is Used
Heavy Stamping
Provides the 6136 N push force required to actuate large metal stamping presses and forming dies over a 950 mm stroke.
Automotive Assembly
Drives heavy structural clamping arms and positioning fixtures in vehicle body-in-white welding lines.
Pallet Handling
Executes long 950 mm transfers to push heavy loaded pallets between adjacent conveyor sections.
Is the Airtac SAI125 Standard Air Cylinder SAI125BX950S the Right Cylinder?
Selecting this 125 mm bore cylinder is appropriate when an application requires upward of 6136 N of push force at 0.5 MPa, offering a significant step up from the 80 mm bore class which provides 2513 N. If a project demands even higher thrust, the 160 mm bore generates 10053 N at the same pressure. For this specific 950 mm stroke configuration, the extended unsupported rod length makes the assembly highly susceptible to bending under side loads. To prevent premature rod-bearing wear or piston scoring, implement an external linear guide or utilize a guided cylinder carriage to support the load throughout the travel.
This unit is dimensionally interchangeable per ISO 15552, serving as a direct drop-in replacement for other standard profile cylinders with identical 125 mm bore, 950 mm stroke, PT G1/2 port, and compatible mounting accessories like TC trunnion or FA flange brackets. Note that the standard SAI does not hold its load upon air pressure loss; if the mechanism requires fail-safe holding without live pressure, integrate an external pilot-operated check valve or specify the SAIL (air-released lock) variant.
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 SAI125BX950S FAQ
At an operating pressure of 0.5 MPa, this 125 mm bore double-acting cylinder generates a push force of 6136 N and a pull force of 5734 N. At 0.7 MPa, the push force increases to 8590 N.
Yes, the SAI125X950-S is a genuine AirTAC ISO 15552 profile cylinder, making it dimensionally interchangeable with other ISO 15552 standard cylinders of the same bore, stroke, and PT port size.
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 SAI125BX950S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.