Airtac SAI50 Standard Cylinder SAI50BX55
The AirTAC Airtac SAI50 Standard Cylinder SAI50BX55 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 55mm 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
- Stroke55 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 SAI50BX55
The AirTAC SAI50X55 is a double-acting ISO 15552 profile cylinder engineered to deliver 982 N of push force at 0.5 MPa. Its 55 mm stroke provides a compact extension distance well within the 1200 mm standard limit, making it highly effective for short-travel automation tasks.
Built with a SUS304 stainless steel rod (option B), this unit offers superior corrosion resistance compared to standard carbon steel. It utilizes PT tapered port threads and features an extruded aluminum barrel with sensor grooves on both sides, allowing for flexible CMSE or DMSE switch mounting when a magnet is added.
Airtac SAI50 Standard Cylinder SAI50BX55 Technical Specifications
| Model | Airtac SAI50 Standard Cylinder SAI50BX55 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 55 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 SAI50BX55
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×55 | 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 SAI50BX55 Is Used
Short-Stroke Clamping
Ideal for securing medium-sized workpieces during machining, utilizing its 982 N push force to hold components firmly in place.
Package Diverting
Provides rapid actuation for sorting arms on packaging lines, where the 55 mm stroke pushes items cleanly off the main belt path.
Gate Operation
Drives small access gates and machine guards, offering reliable linear movement in compact industrial enclosures.
Is the Airtac SAI50 Standard Cylinder SAI50BX55 the Right Cylinder?
Choose this 50 mm bore when an application requires more power than the 40 mm version (which provides 628 N at 0.5 MPa) but lacks the physical space for a 63 mm unit. The 55 mm stroke is optimal for tight positioning cycles.
Because this standard cylinder relies on adjustable air cushions at both ends to decelerate the piston, it cannot hold a load if air pressure is lost. For gravity-lowering tasks that require static position holding without live pressure, specify the SAIL variant with an air-released lock. To match this exact footprint, select a 50 mm bore, 55 mm stroke, PT port thread, and your required mounting accessory.
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 SAI50BX55 FAQ
At an operating pressure of 0.5 MPa, this 50 mm bore cylinder generates 982 N of push force and 825 N of pull force. If pressure is increased to 0.7 MPa, the push force rises to 1374 N.
Yes, the SAI50X55 is dimensionally interchangeable per ISO 15552. It serves as a direct replacement for other ISO 15552 profile cylinders of the same bore and stroke, provided you match the PT port and mounting interface.
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