Airtac SAI125 Standard Air Cylinder SAI125BX1000S
The AirTAC Airtac SAI125 Standard Air Cylinder SAI125BX1000S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 1000mm 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
- Stroke1000 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAI125 Standard Air Cylinder SAI125BX1000S
The AirTAC SAI125X1000-S is a double-acting ISO 15552 profile cylinder engineered for heavy-duty automation. It provides a substantial push force of 8590 N at 0.7 MPa, making it highly capable of moving massive payloads across its extended 1000 mm travel distance. As a made-to-order unit exceeding the 1500 mm standard limit, it is tailored for specialized long-reach applications.
This specific configuration includes a SUS304 stainless steel rod for superior corrosion resistance and structural integrity over long spans. The integrated magnet (-S) allows seamless mounting of CMSE or DMSE sensor switches directly into the dual-side barrel grooves. Sealed with standard TPU, it operates reliably at speeds between 30-500 mm/s.
Airtac SAI125 Standard Air Cylinder SAI125BX1000S Technical Specifications
| Model | Airtac SAI125 Standard Air Cylinder SAI125BX1000S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 1000 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 SAI125BX1000S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×1000 | 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 SAI125BX1000S Is Used
Heavy-Duty Pressing
Applies 6136 N of push force at 0.5 MPa to seat large bearings or assemble heavy industrial chassis components over a 1000 mm reach.
Bulk Material Diversion
Actuates a large-scale deflector gate across wide conveyor belts, utilizing the extended stroke and SUS304 rod for reliable operation in abrasive environments.
Automated Waste Sorting
Pushes heavy refuse or recyclable materials into designated collection bins, relying on the CMSE sensors to confirm full extension over the long travel distance.
Is the Airtac SAI125 Standard Air Cylinder SAI125BX1000S the Right Cylinder?
Choosing this 125 mm bore over the neighboring 100 mm size steps the 0.5 MPa push force up from 3927 N to 6136 N, which is critical for high-inertia loads. For a 1000 mm stroke, the unsupported rod length is highly susceptible to bending under side loads; utilizing an external guide rail or switching to a guided cylinder is strongly recommended to prevent premature rod-bearing wear.
Because this is a double-acting pneumatic actuator, it cannot hold a load if air pressure is lost or the valve centers—the piston will drift. For suspended or vertical loads requiring fail-safe position holding, specify the SAIL (air-released lock) or BSAI (clamp-lock) variant instead of relying on the adjustable air cushions. To mount this as a direct dimensional replacement per ISO 15552, match the 125 mm bore, 1000 mm stroke, PT G1/2 port, and TC trunnion accessories, ensuring the -S magnet is present for switch detection.
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 SAI125BX1000S FAQ
This 125 mm bore cylinder generates a push force of 6136 N and a pull force of 5734 N at 0.5 MPa. At 0.7 MPa, the push force increases to 8590 N.
Yes, the SAI profile barrel is dimensionally interchangeable per ISO 15552, meaning it matches standard mounting footprints and accessories like the TC trunnion for easy drop-in replacement.
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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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