Airtac SAI50 Standard Cylinder SAI50X850S
The AirTAC SAI50 Standard Cylinder SAI50X850S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 850mm 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
- Stroke850 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 SAI50X850S
The AirTAC SAI50X850-S is a double-acting ISO 15552 profile cylinder engineered to deliver 982 N of push force at 0.5 MPa. Its 850 mm stroke is ideal for automated machinery requiring extended linear reach without switching to a larger bore size. The extruded aluminum barrel design omits tie-rods, providing a clean exterior that drops directly into standard ISO 15552 mounting interfaces.
This specific configuration includes a magnet for position sensing and uses standard carbon steel for the piston rod. The barrel features sensor grooves on both sides, allowing straightforward installation of CMSE or DMSE reed switches. For environments exceeding standard operating temperatures, the seals can be upgraded from standard TPU to high-temp Viton (H) or NBR (N).
Airtac SAI50 Standard Cylinder SAI50X850S Technical Specifications
| Model | Airtac SAI50 Standard Cylinder SAI50X850S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 850 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 SAI50X850S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×850 | 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 SAI50X850S Is Used
Extended Transfer Pushing
Moves products between distant conveyor lanes using the full 850 mm stroke, utilizing the 982 N push force to shift heavy cartons without requiring a larger bore.
High-Reach Pallet Dispensing
Actuates lifting or pushing arms on pallet handling lines where a long extension is necessary to reach across wide roller beds.
Automated Door Operation
Opens and closes large industrial machine safety doors, relying on the integrated magnet and dual sensor grooves for precise end-of-stroke confirmation.
Is the Airtac SAI50 Standard Cylinder SAI50X850S the Right Cylinder?
Selecting this 50 mm bore makes sense when your application requires the 982 N push force at 0.5 MPa but falls short of needing the 1559 N provided by the larger 63 mm variant. Because the 850 mm stroke is substantial, the unsupported piston rod is susceptible to bending under side loads. To prevent premature rod-bearing wear, implement an external guide rail or use a dedicated guided cylinder to handle lateral forces.
As a dimensionally interchangeable ISO 15552 cylinder, this model matches standard bore, stroke, and PT port dimensions for straightforward replacements. You can pair it with FA or FB flange accessories, and the integrated magnet (-S) enables direct use with magnetic sensors. Note that if your machinery requires holding a load vertically during a pressure loss, the standard air cushion will not act as a brake; you must specify the SAIL lock variant or use 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 SAI50X850S FAQ
At an operating pressure of 0.5 MPa, this 50 mm bore cylinder provides a push force of 982 N and a pull force of 825 N. If pressure is increased to 0.7 MPa, the push force rises to 1374 N.
Yes, the SAI50X850-S is dimensionally interchangeable with other ISO 15552 profile cylinders. It shares standard mounting dimensions, G1/4 PT ports, and a 50 mm bore, allowing it to serve as a direct replacement for cylinders of the same standard.
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