Airtac SAID50 Double Rod Cylinder SAID50BX650
The AirTAC Airtac SAID50 Double Rod Cylinder SAID50BX650 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø50mm bore and 650mm 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
- Stroke650 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 SAID50BX650
The AirTAC SAID50X650 is a double-acting, double-rod ISO 15552 profile cylinder featuring a 50mm bore and 650mm stroke. Because a stainless SUS304 rod exits both end covers, the effective annulus area is identical on extend and retract, yielding exactly 825N of force each way at 0.5 MPa. This symmetric output is ideal for mechanisms requiring balanced push and pull dynamics.
The twin-rod architecture provides superior anti-rotation guidance compared to a single-rod SAI. You can mount the primary workpiece on one end and attach a position flag or cam to the rear rod. The extruded aluminum barrel includes sensor grooves on both sides, and the PT tapered port threads ensure a reliable, sealed pneumatic connection.
Airtac SAID50 Double Rod Cylinder SAID50BX650 Technical Specifications
| Model | Airtac SAID50 Double Rod Cylinder SAID50BX650 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø50 mm |
| Stroke | 650 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 SAID50BX650
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 50 | Bore size in mm. |
| ×650 | 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 SAID50BX650 Is Used
Symmetric Force Transfer
Drives shuttles or indexing mechanisms where the 825N push and pull forces must be perfectly matched, ensuring consistent cycle times in both directions.
Anti-Rotation Slides
The dual SUS304 rods prevent the piston from twisting under offset loads, providing precise linear guidance for material handling slides.
Rear-Sensing Actuation
Mounts the primary tool on the front rod while using the protruding rear rod to trigger external limit switches or cam mechanisms.
Is the Airtac SAID50 Double Rod Cylinder SAID50BX650 the Right Cylinder?
Choose this 50mm bore when an application demands equal 825N bi-directional force at 0.5 MPa, stepping up from the 40mm bore (528N) for higher capacity, or down from the 63mm bore (1402N) if space is constrained. The double-rod design is preferred over a single-rod SAI when you need to drive twin stations, prevent load rotation, or mount rear sensors. Note that a plain SAID does not hold its position when air pressure is lost; for fail-safe holding, consider an external rod lock or the BSAID clamp-lock variant.
At 650mm, this stroke is within the 1200mm standard maximum but requires careful attention to side-load management. The 20mm rod and M16x1.5 thread handle moderate loads, but long unsupported strokes can cause rod-bearing bending; always use an external guide for heavy or off-center loads. It is dimensionally interchangeable with other ISO 15552 double-rod cylinders, utilizing mounting accessories from the SAID set: Basic, FA, LB, TC, FTC, TCM1, and TCM2.
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 SAID50BX650 FAQ
Because the double-rod design subtracts the rod area from both sides of the piston, the force is equal in both directions. It delivers 825N at 0.5 MPa, 1154N at 0.7 MPa, and 1484N at 0.9 MPa.
Yes, the SAID50X650 is dimensionally interchangeable per ISO 15552 mounting dimensions. It uses a standard PT G1/4 port and supports mounting sets like FA, LB, and TC, allowing it to drop into existing ISO 15552 double-rod setups.
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