Airtac SED Double Rod Cylinder SED63X850
The AirTAC Airtac SED Double Rod Cylinder SED63X850 is a genuine double-acting ISO 15552 double-rod cylinder: a Ø20mm piston rod exits BOTH ends of the Ø63mm bore, giving equal force and speed in both directions and letting you mount tooling or a sensor flag on the back rod. Stroke 850mm, PT3/8 ports, adjustable cushioning.
- BoreØ63 mm
- Stroke850 mm
- Port sizePT3/8
- ConfigurationDouble rod
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SED Double Rod Cylinder SED63X850
The AirTAC SED63X850 is a double-acting, double-rod profile cylinder built to the ISO 15552 dimensional standard. Because a 20 mm rod exits both ends of the 63 mm piston, the annulus area is identical on extend and retract. This yields exactly 1402 N of force each way at 0.5 MPa, eliminating directional thrust mismatch.
This extruded aluminum barrel unit omits external tie rods and features field-adjustable air cushioning at both ends. Without the -S magnet option, this specific SKU cannot host CMSE or DMSE position sensors. The extended 850 mm stroke requires rear-rod clearance and external load guidance to manage side loads.
Airtac SED Double Rod Cylinder SED63X850 Technical Specifications
| Model | Airtac SED Double Rod Cylinder SED63X850 |
|---|---|
| Series | SED ISO 15552 double-rod cylinder |
| Bore size | Ø63 mm |
| Stroke | 850 mm |
| Configuration | Double rod, double acting |
| Port size | PT3/8 |
| 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, 36 mm |
| Max stroke | Up to 1500 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 (Ø63mm)
| Pressure | Force (both directions) |
|---|---|
| 0.5 MPa | 1402 N |
| 0.7 MPa | 1962 N |
| Max (@1.0 MPa) | 286 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 SED63X850
| SED | ISO 15552 profile-barrel DOUBLE-ROD double-acting cylinder. |
|---|---|
| 63 | Bore size in mm. |
| ×850 | 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 SED63X850 Is Used
CNC Lathe Bar Feeder
Pushes and pulls raw bar stock through a spindle with equal 1402 N force at 0.5 MPa, using the rear rod to mount a synchronized guide cam.
Pallet Transfer Indexer
Shifts heavy pallets along an assembly line where the twin 20 mm rods prevent workpiece rotation during the 850 mm traverse.
Web Tensioning Dancer
Maintains equal tension on a material web by applying 1962 N of both-way force at 0.7 MPa, dynamically stabilizing the material path.
Is the Airtac SED Double Rod Cylinder SED63X850 the Right Cylinder?
Selecting this 63 mm bore provides a balanced 1962 N both-way force at 0.7 MPa. If your application is lighter, the 50 mm bore provides 825 N both ways at 0.5 MPa; if you need more thrust, the 80 mm bore yields 2268 N at 0.5 MPa. The twin-rod design is chosen over a single-rod SE when you need to mount a rear cam, drive a secondary mechanism, or prevent the load from twisting during transit.
For a drop-in ISO 15552 replacement, match the 850 mm stroke, PT3/8 port, and your required mounting accessory (Basic, FA, LB, TC, FTC, TCM1, or TCM2). Note that this SKU lacks a magnet for sensing. At 850 mm of stroke, the extended rod mass mandates external linear guides to prevent binding. Remember that the adjustable air cushion only decelerates the load near stroke end; a plain SED does not hold position on air loss. For fail-safe holding, specify a BSED double-rod lock cylinder.
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 SED63X850 FAQ
The SED63X850 provides equal force in both extend and retract directions due to its double-rod design. It delivers 1402 N at 0.5 MPa, 1962 N at 0.7 MPa, and a maximum of 286 kgf at 1.0 MPa.
The twin rods provide superior anti-rotation guidance and allow the rear rod end to drive a secondary mechanism or sensor flag. It is dimensionally interchangeable per ISO 15552, but omits FB, CA, CB, and CR mounting styles.
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