Airtac SED Double Rod Cylinder SED50X20
The AirTAC SED Double Rod Cylinder SED50X20 is a genuine double-acting ISO 15552 double-rod cylinder: a Ø20mm piston rod exits BOTH ends of the Ø50mm bore, giving equal force and speed in both directions and letting you mount tooling or a sensor flag on the back rod. Stroke 20mm, PT1/4 ports, adjustable cushioning.
- BoreØ50 mm
- Stroke20 mm
- Port sizePT1/4
- ConfigurationDouble rod
- 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 SED Double Rod Cylinder SED50X20
The AirTAC SED50X20 is a double-acting, double-rod profile cylinder built to ISO 15552 dimensional standards. Because a 20mm rod exits both end covers, the annular piston area is identical on extend and retract. This yields equal force in both directions, generating about 825 N each way at 0.5 MPa.
This 50mm bore unit features a PT1/4 port, an M16x1.5 rod-end thread, and field-adjustable air cushioning at both ends (30mm cushion length). This specific SKU lacks the -S magnet option, meaning it cannot host CMSE reed or DMSE electronic sensors without modification. The extruded aluminum barrel omits external tie rods for a clean profile.
Airtac SED Double Rod Cylinder SED50X20 Technical Specifications
| Model | Airtac SED Double Rod Cylinder SED50X20 |
|---|---|
| Series | SED ISO 15552 double-rod cylinder |
| Bore size | Ø50 mm |
| Stroke | 20 mm |
| Configuration | Double rod, double acting |
| Port size | PT1/4 |
| 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 (0–150 °C with FKM seals) |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable, 30 mm |
| Max stroke | Up to 1200 mm |
Specifications follow the official AirTAC SED datasheet and ISO 15552 / VDMA 24562 dimensions. Confirm against the product label before installation. Port options: PT (standard) / G (BSPP).
Theoretical Output Force (Ø50mm)
| Pressure | Force (both directions) |
|---|---|
| 0.5 MPa | 825 N |
| 0.7 MPa | 1155 N |
| Max (@1.0 MPa) | 168 kgf |
Because a rod exits both ends, the effective piston area — and therefore the force — is identical on extend and retract. Actual usable force is lower than theoretical; size with a safety margin.
Model Code: Airtac SED Double Rod Cylinder SED50X20
| SED | ISO 15552 profile-barrel DOUBLE-ROD double-acting cylinder. |
|---|---|
| 50 | Bore size in mm. |
| ×20 | Stroke length in mm. |
| -S | Optional built-in magnet for CMSE / DMSE sensor sensing. |
Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B). Seals: TPU (blank) / FKM high-temp (H) / NBR (N). Thread: PT (blank) / G. Mounting (SED): Basic, LB, FA, TC, FTC, TCM1, TCM2. Related: SE (single rod), SEJ (double-rod adjustable stroke), BSED (double-rod rod lock).
Where the Airtac SED Double Rod Cylinder SED50X20 Is Used
Strip Feed Alignment
Clamps metal strip in a stamping press guide. The twin 20mm rods prevent binding in the 20mm stroke, using the equal 825 N force to push and pull the stock accurately.
Shuttle Transfer Gates
Indexes small parts between conveyor lanes. The rear rod protrudes to trip an external mechanical flag, while the front rod drives the pusher with 1154 N at 0.7 MPa.
PCB Edge Deburring
Drives a light abrasive head against circuit board edges. The symmetrical force ensures consistent deburring pressure on both extend and retract strokes without twisting the load.
Is the Airtac SED Double Rod Cylinder SED50X20 the Right Cylinder?
This 50mm bore provides 825 N both ways at 0.5 MPa (1154 N at 0.7 MPa). If your drive force is insufficient, stepping up to the 63mm bore yields 1402 N both ways at 0.5 MPa. If you are oversizing and need a smaller footprint, the 40mm bore provides 528 N. Choose this double-rod SED over a single-rod SE when you need to mount a rear cam or secondary tool, or when twin rods are required to guide the load and prevent rotation. For any application requiring fail-safe position holding on air loss, note that this cylinder will drift; an external rod lock or pilot-operated check valve is required, or consider the BSED series.
Quick checklist
- ✓ Equal force/speed both directions needed?
- ✓ Back-rod space for tooling or a flag
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT/G)
- ✓ Magnet (-S) for CMSE/DMSE sensors?
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Support both rod ends; avoid side load.
- check Adjust end cushion screws for smooth stops.
- check Use correct mounting accessory (LB/FA/TC/FTC/TCM1/TCM2).
- check Installation by qualified personnel per AirTAC docs.
Airtac SED Double Rod Cylinder SED50X20 FAQ
Because the double-rod design has equal piston area on both sides, force is identical in both directions: 825 N at 0.5 MPa, 1154 N at 0.7 MPa, and a maximum of 168 kgf at 1.0 MPa.
Yes, it is dimensionally interchangeable per ISO 15552. Just verify your mounting style is supported (Basic, FA, LB, TC, FTC, TCM1, or TCM2) and ensure you have rear-rod clearance, as a rod protrudes from both ends.
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