Airtac SAI50 Standard Cylinder SAI50X250SFTC
The AirTAC SAI50 Standard Cylinder SAI50X250SFTC is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 250mm 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
- Stroke250 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 SAI50X250SFTC
The AirTAC SAI50X250-S is a double-acting ISO 15552 profile cylinder featuring a 50mm bore and 250mm stroke. It delivers a thrust of 982N at 0.5 MPa, making it well-suited for medium-duty positioning and clamping tasks. The extruded aluminum barrel design omits tie rods, providing a clean exterior that easily drops into existing ISO 15552 mounting interfaces.
This specific configuration includes a standard carbon steel piston rod and a factory-installed magnet (-S) for position sensing. The barrel incorporates sensor grooves on both sides, allowing direct mounting of CMSE or DMSE reed switches without requiring additional brackets. It uses PT tapered port threads and comes equipped with an FTC trunnion mounting accessory for versatile pivoting installations.
Airtac SAI50 Standard Cylinder SAI50X250SFTC Technical Specifications
| Model | Airtac SAI50 Standard Cylinder SAI50X250SFTC |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 250 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 SAI50X250SFTC
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×250 | 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 SAI50X250SFTC Is Used
Material Diversion
Actuates pivot arms on conveyor lines to route medium-weight packages, utilizing the FTC trunnion mount for smooth arc movement.
Component Clamping
Secures machined parts during milling or drilling, delivering 982N of push force at 0.5 MPa while the CMSE sensors confirm clamp engagement.
Lift Gate Control
Drives the opening and closing of heavy loading dock gates, benefiting from the 250mm stroke to achieve the required clearance arc.
Is the Airtac SAI50 Standard Cylinder SAI50X250SFTC the Right Cylinder?
Choose this 50mm bore when an application demands more force than the 40mm version (which provides 628N at 0.5 MPa) but does not require the heavier 63mm class. At 250mm of stroke, the extended rod is susceptible to bending under side loads. To prevent premature seal wear and rod-bearing failure, guide the load externally or utilize a guided cylinder to absorb lateral forces.
The FTC center trunnion mount supplied with this model is ideal for pivoting mechanisms. Remember that a standard double-acting cylinder relies on continuous air pressure to hold its position; if air is exhausted or the valve centers, the piston will drift. For applications requiring true load holding upon pressure loss, consider the SAIL variant with an air-released lock or an external rod lock.
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 SAI50X250SFTC FAQ
This 50mm bore cylinder provides a push force of 982N at 0.5 MPa and a pull force of 825N at 0.5 MPa. At 0.7 MPa, the push force increases to 1374N.
Yes, the SAI series is built to the ISO 15552 standard, meaning its mounting dimensions are fully interchangeable with other ISO 15552 profile cylinders. You must verify that your existing port and mounting hardware match the PT threads and FTC trunnion on this specific unit.
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