
The AirTAC Airtac SDAD Double Rod Slim Cylinder SDAD40X65SB is a genuine double-acting COMPACT cylinder with a piston rod out BOTH ends (Ø40mm bore, 65mm 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 SDAD40X65SB is a double-acting compact 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 exactly 527.8 N of force at 0.5 MPa on both extend and retract strokes. This symmetry is ideal for driving loads that must move with balanced momentum.
This specific configuration includes a built-in magnet for position sensing and male M14x1.5 threads on both rod ends. The 40 mm bore uses a PT1/8 port and runs at speeds from 30 to 500 mm/s. End-of-stroke deceleration is handled by a fixed NBR bumper rather than an adjustable air cushion.
| Model | Airtac SDAD Double Rod Slim Cylinder SDAD40X65SB |
|---|---|
| Series | SDAD compact double-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 65 mm |
| Acting type | Double acting, rod both ends |
| Port size | PT1/8 |
| Rod end thread | M8×1.25 female / M14×1.5 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 | 528 N |
| 0.7 MPa | 739 N |
| Max (@1.0 MPa) | 108 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. |
|---|---|
| 40 | Bore size in mm. |
| ×65 | 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).
Drives opposing gripper arms with identical 527.8 N force in both directions, ensuring perfectly centered clamping on precision machined parts.
Mounts a work tool on one male M14x1.5 rod end while using the opposite end to trip a reed switch, saving axial space in tight transfer lines.
When sizing this unit, consider the neighboring bores: stepping down to SDAD32 yields 345.6 N at 0.5 MPa, while stepping up to SDAD50 provides 824.7 N. The through-rod geometry prevents twisting and lets you mount a tool on one end and a dog on the opposite end simultaneously.
This SDAD40X65SB is configured with the -S magnet for AirTAC reed or electronic switches and the -B option for male M14x1.5 rod threads. Remember that a plain compact cylinder does not hold position if air pressure drops or the valve centers; the piston will drift. For load holding without live pressure, install an external rod lock or a pilot-operated check valve.
Quick checklist
The push and pull forces are equal because of the double-rod design. It generates 527.8 N at 0.5 MPa, 738.9 N at 0.7 MPa, and a theoretical maximum of 108 kgf at 1.0 MPa. The maximum operating pressure is 1.0 MPa.
The through-rod resists twisting and allows you to mount tools or read position from both ends. The -S option adds a piston magnet for AirTAC reed or electronic switches, while the -B option provides male M14x1.5 threads on both rod ends for secure tool mounting.
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