Airtac SAI50 Standard Cylinder SAI50X85S
The AirTAC SAI50 Standard Cylinder SAI50X85S 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 SAI50X85S
The AirTAC SAI50X85-S is a double-acting ISO 15552 profile cylinder offering 982 N of push force at 0.5 MPa and 825 N of pull force. Its 85 mm stroke provides a compact extension distance for mid-range automation tasks. As a genuine AirTAC component, it ensures reliable pneumatic performance.
This variant includes an integrated magnet (-S) for direct compatibility with CMSE and DMSE reed switches, fitting neatly into the dual sensor grooves on the extruded aluminum barrel. It uses a standard carbon steel piston rod and features PT threaded G1/4 ports for straightforward system integration.
Airtac SAI50 Standard Cylinder SAI50X85S Technical Specifications
| Model | Airtac SAI50 Standard Cylinder SAI50X85S |
|---|---|
| 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 SAI50X85S
| 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 SAI50X85S Is Used
Clamping Mechanisms
Provides secure holding force for mid-sized workpieces during machining or welding processes.
Package Diverting
Actuates routing gates on conveyor lines with precise 85 mm movements for material handling.
Press Ejection
Ejects formed parts from light-duty presses using its 982 N push capability at 0.5 MPa.
Is the Airtac SAI50 Standard Cylinder SAI50X85S the Right Cylinder?
Choose this 50 mm bore when an application requires roughly 1000 N of force, bridging the gap between the 40 mm bore (628 N at 0.5 MPa) and the 63 mm bore (1559 N). The 85 mm stroke is ideal for shorter strokes without excessive rod overhang.
For direct replacements, match the 50 mm bore, 85 mm stroke, G1/4 port, and required mounting accessory like an FA flange or LB foot. Because this is a standard double-acting cylinder, it will not hold a load if air pressure is lost; use the SAIL variant if pneumatic locking is required for safety.
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 SAI50X85S FAQ
At 0.5 MPa operating pressure, this 50 mm bore cylinder provides 982 N of push force and 825 N of pull force. At 0.7 MPa, the push force increases to 1374 N.
Yes, the SAI50X85-S is dimensionally interchangeable per ISO 15552. You can use it as a direct replacement for other ISO 15552 profile cylinders with matching 50 mm bore and 85 mm stroke specifications.
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Covers non-human-caused product damage.
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