Airtac SAI50 Standard Cylinder SAI50BX135
The AirTAC SAI50 Standard Cylinder SAI50BX135 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 135mm 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
- Stroke135 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 SAI50BX135
The AirTAC SAI50X135 is a double-acting ISO 15552 profile cylinder featuring a 50mm bore and a 135mm stroke. Because 135mm deviates from the standard stroke increments, it is produced as a made-to-order non-standard stroke. It delivers a push force of 982 N and a pull force of 825 N at 0.5 MPa, making it well-suited for mid-range automation tasks requiring precise intermediate travel.
This specific configuration is built with a SUS304 stainless steel piston rod (material code B) for superior corrosion resistance in harsh environments. It utilizes PT tapered port threads, and because it lacks the -S magnet suffix, it does not include internal magnets for position sensing. For high-temperature environments up to +70 C, the standard TPU seals can be swapped for Viton (code H).
Airtac SAI50 Standard Cylinder SAI50BX135 Technical Specifications
| Model | Airtac SAI50 Standard Cylinder SAI50BX135 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 135 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 SAI50BX135
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×135 | 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 SAI50BX135 Is Used
Custom Jig Clamping
Provides exact 135mm travel to clamp irregularly sized workpieces in machining fixtures where standard strokes fall short.
Mid-Stroke Diverting
Actuates diverter arms on packaging lines, utilizing the 982 N push force to redirect products smoothly at 0.5 MPa.
Corrosive Environment Ejection
Employs the SUS304 rod option to safely eject molded parts or processed goods in humid or chemically exposed industrial settings.
Is the Airtac SAI50 Standard Cylinder SAI50BX135 the Right Cylinder?
Selecting this 50mm bore is ideal when a 40mm bore (628 N push at 0.5 MPa) lacks the necessary thrust, but an upgrade to a 63mm bore (1559 N) would be physically oversized. The 135mm stroke provides exact travel for custom mechanisms. Since this is a non-standard length, ensure your mounting setup perfectly accommodates the custom dimensions.
This cylinder features adjustable air cushions at both ends to decelerate the piston smoothly, but it will not hold a load if air pressure is lost; use the SAIL variant if your application requires a pneumatic lock. As a true ISO 15552 profile cylinder, it serves as a direct replacement for any standard 50mm bore, 135mm stroke cylinder with G1/4 ports and standard FA, LB, or TC mounting accessories.
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 SAI50BX135 FAQ
At an operating pressure of 0.5 MPa, the SAI50X135 generates a push force of 982 N and a pull force of 825 N. If you increase the pressure to 0.7 MPa, the push force rises to 1374 N.
Yes, the SAI50X135 is dimensionally interchangeable per ISO 15552. You can use it as a direct replacement for other 50mm bore ISO 15552 profile cylinders, provided your setup matches the G1/4 port and standard mounting accessories.
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