Airtac SED Double Rod Cylinder SED63X70
The AirTAC Airtac SED Double Rod Cylinder SED63X70 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 70mm, PT3/8 ports, adjustable cushioning.
- BoreØ63 mm
- Stroke70 mm
- Port sizePT3/8
- ConfigurationDouble rod
- Rod threadM16×1.5
- CushionAdjustable, 36 mm
About the Airtac SED Double Rod Cylinder SED63X70
The AirTAC SED63X70 is a double-acting, double-rod ISO 15552 profile cylinder featuring a 63mm bore and 70mm stroke. Because a 20mm rod exits both end covers, the annulus area is identical on extend and retract. This means you get exactly 1402 N of output force in both directions at 0.5 MPa, eliminating the lopsided push-versus-pull force of single-rod units.
This configuration omits the standard magnetic piston (-S), so it cannot host CMSE reed or DMSE electronic sensors directly. You can mount a limit flag or cam on the rear rod extension to trigger external proximity switches. The extruded aluminum barrel includes field-adjustable air cushioning at both ends to smooth out 36mm cushion strokes near travel limits.
Airtac SED Double Rod Cylinder SED63X70 Technical Specifications
| Model | Airtac SED Double Rod Cylinder SED63X70 |
|---|---|
| Series | SED ISO 15552 double-rod cylinder |
| Bore size | Ø63 mm |
| Stroke | 70 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 SED63X70
| SED | ISO 15552 profile-barrel DOUBLE-ROD double-acting cylinder. |
|---|---|
| 63 | Bore size in mm. |
| ×70 | 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 SED63X70 Is Used
Servo Press Feeders
Drives a 1962N push and identical pull to advance and strip metal stock in stamping lines without rotational skew.
Indexing Shuttle Conveyors
Uses the twin rods to shift parts between machining stations, relying on equal both-way force for balanced cycle times.
Mold Transfer Chutes
Ejects injection molds with 1402N at 0.5 MPa, using the rear rod extension to trip an external mechanical flag.
Is the Airtac SED Double Rod Cylinder SED63X70 the Right Cylinder?
Choose this 63mm bore when your mechanism needs 1962 N at 0.7 MPa equally in both directions. If you need less force, step down to the 50mm bore which provides 1154 N at 0.7 MPa. For heavier drives, step up to the 80mm bore delivering 3175 N at 0.7 MPa. The twin-rod design is ideal for transferring loads across two parallel rails without twisting, or for driving a secondary mechanism from the rear rod.
This plain SED63X70 does not hold position on air loss; the piston drifts and the air cushion only decelerates near stroke end. For fail-safe holding, use a BSED double-rod rod lock. As a true ISO 15552 cylinder, it drops in for any standard 63mm double-rod profile cylinder using the PT3/8 port and Basic, FA, LB, TC, FTC, TCM1, or TCM2 mounts.
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 SED63X70 FAQ
Because the double-rod design has equal piston areas on both sides, force is identical in both directions: 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 anti-rotation guidance for the load and allow you to mount tooling or a sensor cam on the rear rod. It also dimensionally replaces any ISO 15552 profile cylinder using the PT3/8 port interface.
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