Airtac SAI50 Standard Cylinder SAI50BX85S
The AirTAC SAI50 Standard Cylinder SAI50BX85S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 85mm 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
- Stroke85 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 SAI50BX85S
The AirTAC SAI50X85-S is a double-acting ISO 15552 profile cylinder offering 982 N of push force and 825 N of pull force at 0.5 MPa. Its 85 mm stroke is well-suited for compact clamping and short-ejection tasks on automated machinery. As a genuine AirTAC unit, it provides a reliable, standardized pneumatic motion solution.
This specific configuration features a SUS304 stainless steel rod (material code B) for superior corrosion resistance in washdown or chemically active environments. The integrated magnet (-S) allows direct mounting of CMSE or DMSE series sensor switches directly into the extruded aluminum barrel's dual side grooves, ensuring precise end-of-stroke detection without extra brackets.
Airtac SAI50 Standard Cylinder SAI50BX85S Technical Specifications
| Model | Airtac SAI50 Standard Cylinder SAI50BX85S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 85 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 SAI50BX85S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×85 | 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 SAI50BX85S Is Used
Corrosive-Resistant Clamping
Ideal for food processing or chemical packaging lines where the SUS304 rod prevents rust and the 982 N force securely holds parts during machining.
Short-Stroke Diverting
The 85 mm stroke provides rapid actuation for diverting lightweight packages on a conveyor belt, utilizing the integrated magnet for immediate position confirmation.
Gate Control
Deploys smoothly to open and close small process gates, benefiting from the adjustable air cushions at both ends to prevent hard impacts at the stroke limits.
Is the Airtac SAI50 Standard Cylinder SAI50BX85S the Right Cylinder?
If your application requires slightly less force, stepping down to a 40 mm bore yields 628 N of push force at 0.5 MPa. Conversely, moving up to a 63 mm bore provides 1559 N, which is preferable if overcoming higher friction or heavier payloads. Because this is an 85 mm stroke, side-load stress on the rod bearing is minimal and does not require external guide rails.
This model uses PT tapered port threads and operates at speeds between 30-800 mm/s. Being a true ISO 15552 profile cylinder, it is dimensionally interchangeable with other ISO 15552 cylinders, making it an excellent direct replacement for standardizing plant equipment. Note that a standard SAI cylinder relies on air pressure to maintain its position; it will drift if air is lost. For fail-safe load holding, consider the SAIL variant with an air-released lock.
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 SAI50BX85S FAQ
At 0.5 MPa, this 50 mm bore cylinder generates a push force of 982 N and a pull force of 825 N.
Yes, the SAI50X85-S is a genuine ISO 15552 profile cylinder, meaning its mounting interface and envelope dimensions are standardized for direct interchangeability with other ISO 15552 compliant cylinders.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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