Airtac SAI50 Standard Cylinder SAI50AX85S
The AirTAC SAI50 Standard Cylinder SAI50AX85S 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 SAI50AX85S
The AirTAC SAI50X85-S is a double-acting ISO 15552 profile cylinder engineered to deliver 982 N of push force and 825 N of pull force at 0.5 MPa. Its 85 mm stroke is well-suited for short-travel clamping and indexing tasks. Because it features an integrated magnet (-S), it pairs directly with CMSE and DMSE sensor switches mounted into the dual side grooves on the extruded aluminum barrel.
This specific configuration incorporates a SUS420J2 stainless steel piston rod (option A) for enhanced corrosion resistance in humid manufacturing environments. It utilizes PT tapered port threads and includes adjustable air cushions at both ends to absorb impact energy at operating speeds up to 30-800 mm/s.
Airtac SAI50 Standard Cylinder SAI50AX85S Technical Specifications
| Model | Airtac SAI50 Standard Cylinder SAI50AX85S |
|---|---|
| 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 SAI50AX85S
| 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 SAI50AX85S Is Used
Component Clamping
Provides 982 N of clamping thrust at 0.5 MPa to secure aluminum or composite workpieces during CNC machining operations.
Package Diverting
Uses the 85 mm stroke to extend a diverter arm on a packaging line, rapidly routing cartons to secondary processing lanes.
Gate Control
Actuates lightweight safety gates or process doors, utilizing the SUS420J2 rod to resist moisture and washdown chemicals.
Is the Airtac SAI50 Standard Cylinder SAI50AX85S the Right Cylinder?
Select this 50 mm bore model when a 32 mm bore (402 N push at 0.5 MPa) lacks sufficient power, but you want to avoid the larger footprint and higher air consumption of a 63 mm bore (1559 N push at 0.5 MPa). The 85 mm stroke provides exact travel for compact automated stations. If your mechanism must hold a load vertically without constant air pressure, remember that standard cushions only decelerate motion; you should specify the SAIL variant with an air-released lock or use an external pilot-operated check valve. As a true ISO 15552 profile cylinder, this unit serves as a direct dimensional replacement for any standard 50 mm bore cylinder with a G1/4 port, matching FA/FB flange or TC trunnion mounting interfaces.
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 SAI50AX85S 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. At 0.7 MPa, the push force increases to 1374 N.
Yes. The SAI series is built to the ISO 15552 standard, meaning its mounting dimensions for flanges and trunnions are fully interchangeable with other ISO 15552 profile cylinders of the same 50 mm bore size.
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