Airtac SAI50 Standard Cylinder SAI50X85
The AirTAC SAI50 Standard Cylinder SAI50X85 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 SAI50X85
The AirTAC SAI50X85 is a double-acting profile cylinder built to ISO 15552 dimensional standards, ensuring a direct replacement for other ISO 15552 cylinders. Operating at 0.5 MPa, it generates a push force of 982 N and a pull force of 825 N, making it well-suited for medium-duty handling tasks requiring an 85 mm stroke.
This variant features a robust carbon steel piston rod and PT tapered port threads. For environments requiring higher heat resistance, the standard TPU seals can be swapped for Viton (H) options. If your setup needs end-position sensing, the barrel includes dual-sided sensor grooves compatible with CMSE or DMSE switches when a magnet is specified.
Airtac SAI50 Standard Cylinder SAI50X85 Technical Specifications
| Model | Airtac SAI50 Standard Cylinder SAI50X85 |
|---|---|
| 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 SAI50X85
| 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 SAI50X85 Is Used
Component Clamping
Secures medium-sized metal or plastic components during machining operations, utilizing its 982 N push force for a firm, stable grip.
Package Diverting
Actuates a diverter arm on a packaging line to route standard-sized boxes, with the 85 mm stroke providing precise lateral movement.
Gate Control
Opens and closes small access gates or machine guards, taking advantage of the smooth adjustable air cushions at both stroke ends.
Is the Airtac SAI50 Standard Cylinder SAI50X85 the Right Cylinder?
Selecting this 50 mm bore is ideal when a 40 mm bore (providing 628 N push at 0.5 MPa) is insufficient, but the larger 63 mm bore (delivering 1559 N) is oversized for your space. The 85 mm stroke offers a compact extension for standard pick-and-place routines. Because the stroke is under 300 mm, side-load stress on the rod bearing is minimal, though external guides are still recommended for heavy offset loads.
This genuine AirTAC unit uses a G1/4 port and supports standard ISO 15552 mounting accessories like FA flanges or LB foot brackets. Remember that the standard SAI does not hold a load if air pressure drops; for fail-safe 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 SAI50X85 FAQ
At an operating pressure of 0.5 MPa, the SAI50X85 generates a push force of 982 N and a pull force of 825 N. At the maximum 1.0 MPa pressure, the theoretical push force is 200 kgf.
Yes, the SAI50X85 is a genuine ISO 15552 profile cylinder, making its mounting interface dimensionally interchangeable with other ISO 15552 cylinders from brands like SMC or Festo. Always verify your specific port and mounting dimensions.
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