Airtac SDAD Double Rod Slim Cylinder SDAD63X85S
The AirTAC Airtac SDAD Double Rod Slim Cylinder SDAD63X85S is a genuine double-acting COMPACT cylinder with a piston rod out BOTH ends (Ø63mm bore, 85mm 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
- Stroke85 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 SDAD63X85S
The AirTAC SDAD63X85S is a compact double-acting cylinder featuring a piston rod exiting both ends of its riveted body. Because the rod occupies each chamber equally, the annular area matches on extend and retract, giving exactly 1401.5 N of push and pull force at 0.5 MPa. This symmetry is ideal for driving loads that require consistent kinetic energy in both travel directions.
The through-rod geometry inherently resists twisting, allowing you to mount a work tool on one end and a position dog on the opposite side simultaneously. Fitted with the S option, it contains a built-in piston magnet for AirTAC reed or electronic solid-state switches. The short body footprint saves axial mounting depth, while fixed NBR bumpers decelerate the 85 mm stroke at each end.
Airtac SDAD Double Rod Slim Cylinder SDAD63X85S Technical Specifications
| Model | Airtac SDAD Double Rod Slim Cylinder SDAD63X85S |
|---|---|
| Series | SDAD compact double-rod cylinder |
| Bore size | Ø63 mm |
| Stroke | 85 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 SDAD63X85S
| SDAD | Compact double-acting cylinder, rod out both ends. |
|---|---|
| 63 | Bore size in mm. |
| ×85 | 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 SDAD63X85S Is Used
Symmetric Transfer Chuck
Equal 1401.5 N push and pull force securely clamps and releases heavy billets during automated machining transfers without asymmetric drift.
Dual-End Lift Station
The anti-rotation through-rod lifts an 85 mm stroke platform on one end while a dog triggers an electronic switch on the opposite end.
Zero-Twist Press Fit
Resists twisting during vertical insertion of heavy pins, maintaining precise alignment where a single-rod cylinder might bind under off-center loads.
Is the Airtac SDAD Double Rod Slim Cylinder SDAD63X85S the Right Cylinder?
When sizing this 63 mm bore unit, compare its 1401.5 N output at 0.5 MPa against adjacent models. Dropping down to the SDAD50 yields 824.7 N, whereas stepping up to the SDAD80 provides 2267.8 N. Based on the 1401.5 N figure, a safe working load is roughly 841 N (about 60 percent capacity), which translates to a vertical lift capability of approximately 71.4 kg with a 2:1 safety margin.
The through-rod prevents rotation and enables dual-end tooling, but remember that a plain cylinder drifts if air pressure drops or the valve centers. The fixed NBR bumper only decelerates near the stroke end; for true load holding, integrate an external rod lock or pilot-operated check valve. This configuration includes the S magnet for sensing, a PT1/4 port, and female M10x1.5 rod-end threads on both sides.
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 SDAD63X85S FAQ
The double-rod design provides equal force in both directions: 1401.5 N at 0.5 MPa and 1962.2 N at 0.7 MPa. The theoretical maximum is 286 kgf at 1.0 MPa, with a proof pressure of 1.5 MPa.
Yes, the through-rod exits both sides so you can drive a tool on one end and mount a dog on the other. The S option includes a built-in magnet for AirTAC reed or electronic switches.
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