
The AirTAC Airtac SDAD Double Rod Slim Cylinder SDAD63X70B is a genuine double-acting COMPACT cylinder with a piston rod out BOTH ends (Ø63mm bore, 70mm 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.
The AirTAC SDAD63X70B is a compact double-acting cylinder featuring a through-rod that exits both ends of the riveted body. Because the rod occupies both chambers, the annular area is identical in each direction, giving you exactly 1401.5 N of push and pull force at 0.5 MPa. This symmetric output is perfect for opposing tooling or synchronized clamping tasks.
This specific SKU uses male M18x1.5 threads on the 20 mm rods at both ends, allowing direct mounting of fixtures on either side. The short body design saves axial depth compared to standard round-body options. End-of-stroke deceleration is handled by fixed NBR bumpers rather than adjustable air cushions. Note that this configuration lacks a piston magnet, so it cannot support position sensing without switching to the -S variant.
| Model | Airtac SDAD Double Rod Slim Cylinder SDAD63X70B |
|---|---|
| Series | SDAD compact double-rod cylinder |
| Bore size | Ø63 mm |
| Stroke | 70 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.
| 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.
| SDAD | Compact double-acting cylinder, rod out both ends. |
|---|---|
| 63 | Bore size in mm. |
| ×70 | 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).
Utilizes the equal 1401.5 N extend and retract force to center web materials smoothly without directional force bias.
Mounts a pusher head on one male M18x1.5 rod end and a counterweight or dog on the opposite end to balance the 70 mm stroke.
Lifts up to 71.4 kg with a 2:1 safety margin, relying on the anti-rotation through-rod to prevent load twisting during elevation.
When sizing this unit, compare its 1401.5 N output at 0.5 MPa against adjacent bores. Stepping down to the SDAD50 yields 824.7 N, while stepping up to the SDAD80 provides 2267.8 N. Based on the 1401.5 N figure, your safe working load is approximately 841 N (60 percent capacity), translating to a vertical lift capability of roughly 71.4 kg with a 2:1 safety margin.
The through-rod geometry inherently resists twisting, letting you drive a load on one end while mounting a secondary mechanism on the opposite male M18x1.5 thread. Remember that a standard cylinder drifts when air pressure is lost or the valve centers; the NBR bumper only decelerates near stroke end and will not hold the load. For vertical load holding without live pressure, install an external rod lock or pilot-operated check valve. Confirm your 63 mm bore, 70 mm stroke, PT1/4 port, and lack of magnet suit the application.
Quick checklist
Because the rod exits both ends, push and pull forces are equal: 1401.5 N at 0.5 MPa, 1962.2 N at 0.7 MPa, and a theoretical maximum of 286 kgf at 1.0 MPa. The maximum operating pressure is 1.0 MPa.
Yes, the through-rod design resists rotation and provides male M18x1.5 threads on both ends, allowing you to drive a tool on one side while mounting secondary hardware on the other. Just ensure you leave clearance for the rod exiting both covers.
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