Airtac SAI50 Standard Cylinder SAI50BX275
The AirTAC SAI50 Standard Cylinder SAI50BX275 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm 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.
- BoreØ50 mm
- Stroke275 mm
- Port sizeG1/4
- Acting typeDouble acting
- Rod threadM16×1.5
- 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 SAI50 Standard Cylinder SAI50BX275
The AirTAC SAI50X275 is a double-acting ISO 15552 profile cylinder engineered to deliver 982 N of push force at 0.5 MPa. With its 275 mm stroke, this unit is perfectly sized for mid-range linear actuation tasks requiring reliable thrust. The extruded aluminum barrel design omits tie-rods, providing a clean exterior that simplifies mounting and sensor placement.
This specific configuration is built with a SUS304 stainless steel piston rod (material code B) for superior corrosion resistance, making it ideal for environments where moisture or harsh elements are present. It utilizes PT tapered port threads and lacks a standard magnet. If your application requires end-of-stroke signaling, you would need to specify the -S option to activate the dual sensor grooves for CMSE or DMSE switches.
Airtac SAI50 Standard Cylinder SAI50BX275 Technical Specifications
| Model | Airtac SAI50 Standard Cylinder SAI50BX275 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 275 mm |
| Acting type | Double acting |
| Port size | G1/4 |
| Rod thread | M16×1.5 |
| 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa | 1374 N | — |
| Max (@1.0 MPa) | 200 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAI50 Standard Cylinder SAI50BX275
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | 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 SAI50 Standard Cylinder SAI50BX275 Is Used
Stainless Rod Clamping
Ideal for packaging machinery where the SUS304 rod resists washdown chemicals while providing 982 N of clamping force.
Medium Stroke Diverting
The 275 mm stroke offers extended travel for pushing products between parallel conveyor lanes in sorting systems.
Press Ejection
Delivers reliable ejection force on light assembly presses, utilizing adjustable cushions to soften end-of-stroke impact.
Is the Airtac SAI50 Standard Cylinder SAI50BX275 the Right Cylinder?
Selecting this 50 mm bore makes sense when a 40 mm bore (providing 628 N at 0.5 MPa) is underpowered, but an 80 mm bore is physically too large. Because the 275 mm stroke exceeds the 300 mm threshold, it is crucial to manage side load. An unsupported piston rod of this length is susceptible to bending under lateral forces; utilizing an external guide rail or a dedicated guided cylinder will prevent premature rod-bearing wear.
This model serves as a direct replacement for any ISO 15552 cylinder matching the 50 mm bore, 275 mm stroke, and G1/4 port interface. If your machinery requires the load to remain stationary after air pressure is removed or exhausted, note that the standard adjustable air cushion only decelerates the piston at stroke end and does not function as a braking mechanism. For positive position holding, consider the SAIL variant with an air-released lock or an external pilot-operated check valve.
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 SAI50 Standard Cylinder SAI50BX275 FAQ
At 0.5 MPa, this 50 mm bore cylinder provides 982 N of push force and 825 N of pull force. If operating pressure is increased to 0.7 MPa, the push force rises to 1374 N.
No, the standard SAI cylinder will drift or drop if pressure is lost. The adjustable air cushion only decelerates the piston near the end of the stroke and cannot lock the load. For holding vertical loads, use the SAIL variant with an air-released lock.
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1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
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