
The AirTAC Airtac SDAD Double Rod Slim Cylinder SDAD16X20 is a genuine double-acting COMPACT cylinder with a piston rod out BOTH ends (Ø16mm bore, 20mm 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 SDAD16X20 is a compact double-acting cylinder featuring a 6 mm piston rod exiting both ends of its riveted body. Because the rod occupies each chamber equally, extend and retract forces remain identical at 86.4 N using 0.5 MPa air, preventing asymmetric loading on your tooling.
This 16 mm bore unit runs at 30-500 mm/s and uses a fixed NBR bumper at each end to absorb end-of-stroke shock. It lacks a piston magnet, so position sensing is unavailable on this specific SKU without upgrading to the -S variant.
| Model | Airtac SDAD Double Rod Slim Cylinder SDAD16X20 |
|---|---|
| Series | SDAD compact double-rod cylinder |
| Bore size | Ø16 mm |
| Stroke | 20 mm |
| Acting type | Double acting, rod both ends |
| Port size | M5×0.8 |
| Rod end thread | M3×0.5 female / M5×0.8 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 50 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 | 86 N |
| 0.7 MPa | 121 N |
| Max (@1.0 MPa) | 18 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. |
|---|---|
| 16 | Bore size in mm. |
| ×20 | 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 fingers with equal 86.4 N force in both directions to prevent part distortion during clamping.
Uses the twin rods to resist twisting while positioning delicate circuit boards within a tight 20 mm stroke envelope.
Maintains steady bidirectional tension on packaging film rolls, leveraging the matched annular areas for consistent pull.
When sizing this 16 mm bore option, consider the SDAD12 which yields 42.4 N at 0.5 MPa, or step up to the SDAD20 delivering 131.9 N at 0.5 MPa. The through-rod design resists twisting and permits driving a fixture on one end while using the opposite end for a mechanical dog. This configuration features a 20 mm stroke, M5x0.8 port, and female M3x0.5 rod threads.
A safe working load is roughly 52 N, allowing a vertical lift of about 4.4 kg with a 2:1 safety margin. Note that this cylinder cannot hold a load if air pressure drops; the piston will drift, requiring an external pilot-operated check valve for load holding.
Quick checklist
The push and pull forces are equal because of the double-rod design. It generates 86.4 N at 0.5 MPa and 121 N at 0.7 MPa, with a theoretical maximum of 18 kgf at 1.0 MPa.
No, this specific model lacks a built-in piston magnet. You must select the SDAD16X20S variant to use AirTAC reed or electronic solid-state switches in the body sensor grooves.
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