Airtac SAID50 Double Rod Cylinder SAID50BX140S
The AirTAC Airtac SAID50 Double Rod Cylinder SAID50BX140S is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 140mm stroke, G1/4 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ50 mm
- Stroke140 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 SAID50 Double Rod Cylinder SAID50BX140S
The AirTAC SAID50X140-S is a double-acting, double-rod ISO 15552 profile cylinder featuring a 50mm bore and 140mm stroke. Because the piston rod exits both end covers, the effective annulus area is identical in both directions, yielding an equal extend and retract force of 825N at 0.5MPa (or 1154N at 0.7MPa). This symmetric output is ideal for applications requiring consistent thrust and speed on both strokes.
This variant is equipped with a -S magnet for position sensing via AirTAC CMSE reed or DMSE solid-state switches fitted into the dual-side sensor grooves. The twin rods are constructed from corrosion-resistant SUS304 stainless steel (code B), and the unit utilizes PT tapered port threads. The rear rod end can simultaneously drive a secondary mechanism or mount a cam, providing superior anti-rotation guidance compared to a single-rod SAI.
Airtac SAID50 Double Rod Cylinder SAID50BX140S Technical Specifications
| Model | Airtac SAID50 Double Rod Cylinder SAID50BX140S |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 140 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 SAID50 Double Rod Cylinder SAID50BX140S
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×140 | 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 SAID50 Double Rod Cylinder SAID50BX140S Is Used
Symmetric Force Transfer
Drives loads requiring identical push and pull thrust, utilizing the equal 825N annulus force in both directions at 0.5MPa.
Twin-Station Actuation
Mounts a primary workpiece on the front rod and a secondary cam or tool on the rear protruding rod to operate two mechanisms simultaneously.
Anti-Rotation Slides
Leverages the dual SUS304 stainless steel rods to guide the load and prevent mechanical rotation without needing external guide rails.
Is the Airtac SAID50 Double Rod Cylinder SAID50BX140S the Right Cylinder?
Select this 50mm bore when your mechanism demands balanced bidirectional force and high side-load stability, stepping up from the 40mm bore (528N at 0.5MPa) or down from the 63mm bore (1402N at 0.5MPa). A double-rod design is chosen over a single-rod SAI when you need to mount a workpiece on one rod end and a position flag or secondary tool on the opposite end, ensuring precise anti-rotation guidance. The 140mm stroke falls within standard limits, keeping the overall length compact.
When ordering, confirm the 50mm bore, 140mm stroke, PT port threads, and the -S magnet option. Mounting accessories follow the SAID subset (Basic, FA, LB, TC, FTC, TCM1, TCM2), omitting the FB, CA, CB, and CR brackets used on single-rod variants. Note that the adjustable air cushions at both ends only decelerate the piston near stroke end; this cylinder will drift if air pressure is lost. For position holding without live pressure, consider a SAIL lock, BSAID clamp-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 SAID50 Double Rod Cylinder SAID50BX140S FAQ
Because the rod occupies both sides of the piston, the push and pull forces are equal. It generates 825N at 0.5MPa, 1154N at 0.7MPa, and 1484N at 0.9MPa in both directions.
Yes, the SAID50X140-S is dimensionally interchangeable per ISO 15552 profile cylinder standards. It can serve as a drop-in replacement for other ISO 15552 double-rod cylinders, utilizing the standard SAID mounting interface.
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