Airtac SDAD Double Rod Slim Cylinder SDAD63X40
The AirTAC Airtac SDAD Double Rod Slim Cylinder SDAD63X40 is a genuine double-acting COMPACT cylinder with a piston rod out BOTH ends (Ø63mm bore, 40mm stroke). The through-rod resists twisting and lets you drive a tool on one end while a switch or dog reads position on the other — with identical force in both directions.
- BoreØ63 mm
- Stroke40 mm
- Port sizePT1/4
- Acting typeDouble acting, double rod
- Rod threadM10×1.5 (F) / M18×1.5 (B)
- CushionFixed NBR bumper (both ends)
About the Airtac SDAD Double Rod Slim Cylinder SDAD63X40
The AirTAC SDAD63X40 is a double-acting compact cylinder featuring a 63mm bore and 40mm stroke, engineered with twin piston rods exiting both ends of its riveted body. Because a rod occupies each chamber, the annular area remains identical in both directions, yielding an equal push and pull force of 1401.5 N at 0.5 MPa. This symmetric thrust is highly advantageous for manipulating loads without inducing directional bias.
The through-rod geometry inherently resists twisting, allowing you to mount a work tool on one end while fitting a dog or bracket on the opposite side. It uses a 20mm diameter rod at each end with a PT1/4 air port, and relies on a fixed NBR bumper at each end to decelerate the stroke rather than an adjustable air cushion.
Airtac SDAD Double Rod Slim Cylinder SDAD63X40 Technical Specifications
| Model | Airtac SDAD Double Rod Slim Cylinder SDAD63X40 |
|---|---|
| Series | SDAD compact double-rod cylinder |
| Bore size | Ø63 mm |
| Stroke | 40 mm |
| Acting type | Double acting, rod both ends |
| Port size | PT1/4 |
| Rod end thread | M10×1.5 female / M18×1.5 male (B) |
| 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 – 500 mm/s |
| Cushion | Fixed NBR bumper (both ends) |
| Max standard stroke | Up to 120 mm |
Because a rod occupies both cylinder chambers, the effective area — and therefore the force — is identical in both directions. Specifications follow the official AirTAC SDAD datasheet.
Theoretical Output Force (Ø63mm)
| Pressure | Force (both directions) |
|---|---|
| 0.5 MPa | 1402 N |
| 0.7 MPa | 1962 N |
| Max (@1.0 MPa) | 286 kgf |
Force uses the annular (rod-side) area on both strokes, so extend and retract match. Actual usable force is lower than theoretical due to friction. Size with a safety margin.
Model Code: Airtac SDAD Double Rod Slim Cylinder SDAD63X40
| SDAD | Compact double-acting cylinder, rod out both ends. |
|---|---|
| 63 | Bore size in mm. |
| ×40 | Stroke length in mm. |
| S | Built-in magnet for magnetic-switch sensing (omit = none). |
| B | Male-thread piston rods (omit = female thread). |
Thread: PT standard. Related SDA-family variants: SDA (single rod), SSA/STA (single acting), SDAJ (adjustable stroke), SDAT (duplex), SDAW (duplex-end).
Where the Airtac SDAD Double Rod Slim Cylinder SDAD63X40 Is Used
Web Guiding Mechanism
Utilizes the equal 1401.5 N push and pull force to tension and steer material webs without deflection, while the through-rod prevents rotational twist during high-speed tracking.
Dual-End Transfer Shuttle
Mounts a grip on one rod end and a dog on the opposite to trigger a remote reed switch, maximizing the 40mm stroke for compact part transfer between parallel conveyors.
Symmetric Lift Station
Lifts a 71.4 kg vertical payload using the identical annular force in both directions, ensuring smooth descent without gravity-induced acceleration overshooting the fixed NBR bumper.
Is the Airtac SDAD Double Rod Slim Cylinder SDAD63X40 the Right Cylinder?
When sizing this unit, consider the adjacent bores: the SDAD50 provides 824.7 N at 0.5 MPa, while the larger SDAD80 offers 2267.8 N at 0.5 MPa. The 63mm bore sits perfectly between them, providing a safe working load of roughly 841 N (about 60% of the 0.5 MPa figure) and a vertical lift capacity of approximately 71.4 kg with a 2:1 safety margin. This SKU lacks the S magnet option, so it cannot support reed or electronic switches; choose the -S variant if position sensing is required.
Keep in mind that a standard double-acting cylinder does not hold its load if air pressure drops or the valve is centered, as the piston will drift and the fixed bumper only decelerates near the stroke end. For load holding without live pressure, integrate an external rod lock or a pilot-operated check valve. Confirm your rod-end thread requirements (female M10x1.5 or male M18x1.5) and ensure you leave adequate clearance for the 20mm rod exiting both ends.
Quick checklist
- ✓ Need equal force both directions?
- ✓ Anti-rotation / dual-end mounting?
- ✓ Space for a rod that exits both ends
- ✓ Port/thread type (PT)
- ✓ Magnet (S) for sensors?
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Leave clearance for the rod exiting both ends.
- check Avoid side load on either rod end.
- check Front/rear covers are riveted — do not dismantle.
- check Installation by qualified personnel per AirTAC docs.
Airtac SDAD Double Rod Slim Cylinder SDAD63X40 FAQ
The SDAD63X40 delivers an equal force of 1401.5 N at 0.5 MPa and 1962.2 N at 0.7 MPa in both extend and retract directions due to its double-rod design. The theoretical maximum force is 286 kgf at 1.0 MPa, with a maximum operating pressure of 1.0 MPa and a proof pressure of 1.5 MPa.
This specific SKU lacks a piston magnet, so it cannot support reed or electronic switches; you would need the -S variant for sensing. Additionally, it does not hold position on air loss, as the piston drifts and the fixed NBR bumper only decelerates near the stroke end, so an external rod lock or pilot-operated check valve is required for load holding.
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