Airtac SAI50 Standard Cylinder SAI50X350S
The AirTAC SAI50 Standard Cylinder SAI50X350S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 350mm 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
- Stroke350 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 SAI50X350S
The AirTAC SAI50X350-S is a double-acting profile cylinder built to ISO 15552 dimensional standards, ensuring a direct replacement for any matching ISO 15552 interface. It delivers a push force of 982 N and a pull force of 825 N at 0.5 MPa, making it well-suited for mid-range actuation tasks over its 350 mm stroke.
This variant includes a magnetic piston (-S) for non-contact position sensing, utilizing the dual sensor grooves extruded into the aluminum barrel for direct CMSE or DMSE switch mounting. The piston rod is standard carbon steel, and the seals can be upgraded to Viton (H) for high-temperature environments up to 70 C.
Airtac SAI50 Standard Cylinder SAI50X350S Technical Specifications
| Model | Airtac SAI50 Standard Cylinder SAI50X350S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 350 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 SAI50X350S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×350 | 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 SAI50X350S Is Used
Package Diverting
Ideal for pushing heavy packages across sorting conveyors where the 982 N force at 0.5 MPa easily overcomes friction over the 350 mm travel distance.
Clamping Mechanisms
Provides reliable mid-force clamping on machining fixtures, using the magnetic piston and DMSE sensors to confirm clamp engagement before a cycle starts.
Pallet Stops
Acts as a robust stop gate for medium-sized pallets on roller conveyors, absorbing impact using the adjustable 30 mm end cushions.
Is the Airtac SAI50 Standard Cylinder SAI50X350S the Right Cylinder?
Selecting this 50 mm bore makes sense when a 40 mm bore (628 N push at 0.5 MPa) is insufficient, but the larger 63 mm bore (1559 N) would be overkill and consume more space. The 350 mm stroke is a standard length, but at this extension distance, side loads can cause severe rod-bearing bending and premature wear. To manage this, implement an external guide rail or choose a fully guided cylinder to prevent the unsupported rod from bending.
Because this is a double-acting cylinder, it relies on live air pressure to move in both directions and does not naturally hold a load if pressure is exhausted or the valve centers. The adjustable air cushions at both ends (30 mm cushion stroke) decelerate the piston near the stroke limits, but they are not a braking mechanism. For position holding without live pressure, consider the SAIL (air-released lock) variant or an external pilot-operated check valve. This model uses a G1/4 port, M16x1.5 rod thread, and operates at speeds of 30-800 mm/s.
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 SAI50X350S FAQ
At 0.5 MPa, the push force is 982 N and the pull force is 825 N. If you increase the operating pressure to 0.7 MPa, the push force rises to 1374 N.
Yes, the SAI50X350-S is dimensionally interchangeable per ISO 15552 mounting dimensions, meaning it matches the bore, stroke, port (G1/4), and mounting footprint of other ISO 15552 profile cylinders.
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1-Year Warranty
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Standard models are processed and dispatched in 3-5 business days.
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