Airtac SAI40 Standard Air Cylinder SAI40BX275
The AirTAC SAI40 Standard Air Cylinder SAI40BX275 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø40mm bore and 275mm stroke, G1/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it interchangeable with other ISO 15552 cylinders at the mounting interface.
- BoreØ40 mm
- Stroke275 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM12×1.25
- CushionAdjustable, 30 mm
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SAI40 Standard Air Cylinder SAI40BX275
The AirTAC SAI40X275 is a double-acting ISO 15552 profile cylinder engineered to deliver 628 N of push force at 0.5 MPa. Its 275 mm stroke provides the extended travel needed for mid-range positioning tasks. Built to the ISO 15552 mounting interface, it serves as a dimensionally interchangeable direct replacement for other standard profile cylinders.
This specific configuration features a SUS304 stainless steel piston rod (material code B) for superior corrosion resistance in humid or washdown environments. It utilizes PT tapered port threads. Because a magnet is not specified, this unit does not include internal magnetic pistons for reed switch sensing.
Airtac SAI40 Standard Air Cylinder SAI40BX275 Technical Specifications
| Model | Airtac SAI40 Standard Air Cylinder SAI40BX275 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø40 mm |
| Stroke | 275 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M12×1.25 |
| 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 – 800 mm/s |
| Cushion | Adjustable, 30 mm |
| Max stroke | Up to 1200 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa | 880 N | — |
| Max (@1.0 MPa) | 128 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAI40 Standard Air Cylinder SAI40BX275
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 40 | Bore size in mm. |
| ×275 | 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 SAI40 Standard Air Cylinder SAI40BX275 Is Used
Package Diverting
Provides the 628 N push force and 275 mm reach needed to positively divert medium-weight cartons on a sorting line.
Clamp Actuation
Extends fully to drive stainless steel clamping arms over wide workpieces, taking advantage of the corrosion-resistant SUS304 rod.
Pallet Loading
Pushes product layers onto pallets where the 40 mm bore offers the optimal balance of footprint and thrust.
Is the Airtac SAI40 Standard Air Cylinder SAI40BX275 the Right Cylinder?
Select this 40 mm bore when an application requires more thrust than the 32 mm variant (which provides 402 N at 0.5 MPa) but lacks the physical space for a 50 mm cylinder. The 275 mm stroke offers ample extension for packaging and sorting equipment.
Because the stroke exceeds 300 mm, the unsupported rod length increases susceptibility to bending under side loads; utilize an external guide rail or a guided cylinder to prevent premature rod-bearing wear. To hold a load securely without continuous air pressure, integrate an external pilot-operated check valve or specify the SAIL locking variant, as the standard adjustable air cushion only decelerates the piston at end-of-stroke and cannot brake or hold a load.
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 SAI40 Standard Air Cylinder SAI40BX275 FAQ
At 0.5 MPa operating pressure, this 40 mm bore cylinder generates 628 N of push force and 528 N of pull force. At 0.7 MPa, the push force increases to 879 N.
Yes. The SAI40X275 is a true ISO 15552 profile cylinder, making its mounting dimensions fully interchangeable with other ISO 15552 cylinders. You can drop it into existing tooling using standard FA, FB, or TC mounting accessories.
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Covers non-human-caused product damage.
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