Airtac SDAD Double Rod Slim Cylinder SDAD20X25SB
The AirTAC Airtac SDAD Double Rod Slim Cylinder SDAD20X25SB is a genuine double-acting COMPACT cylinder with a piston rod out BOTH ends (Ø20mm bore, 25mm 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.
- BoreØ20 mm
- Stroke25 mm
- Port sizeM5×0.8
- Acting typeDouble acting, double rod
- Rod threadM4×0.7 (F) / M6×1.0 (B)
- CushionFixed NBR bumper (both ends)
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SDAD Double Rod Slim Cylinder SDAD20X25SB
The AirTAC SDAD20X25SB is a compact double-acting cylinder featuring an 8 mm through-rod exiting both ends of its riveted body. Because the rod occupies each chamber equally, the annular area matches, giving you 131.9 N of push and pull force simultaneously at 0.5 MPa. This symmetric output is perfect for balanced actuation tasks.
Equipped with a male M6x1.0 thread on both rod ends, it allows direct mounting of tooling on one side and a dog or sensor target on the opposite side. The built-in magnet supports reed or electronic switches via the body grooves, while the fixed NBR bumpers absorb end-of-stroke shocks within the 30-500 mm/s speed range.
Airtac SDAD Double Rod Slim Cylinder SDAD20X25SB Technical Specifications
| Model | Airtac SDAD Double Rod Slim Cylinder SDAD20X25SB |
|---|---|
| Series | SDAD compact double-rod cylinder |
| Bore size | Ø20 mm |
| Stroke | 25 mm |
| Acting type | Double acting, rod both ends |
| Port size | M5×0.8 |
| Rod end thread | M4×0.7 female / M6×1.0 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 90 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 (Ø20mm)
| Pressure | Force (both directions) |
|---|---|
| 0.5 MPa | 132 N |
| 0.7 MPa | 185 N |
| Max (@1.0 MPa) | 27 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 SDAD20X25SB
| SDAD | Compact double-acting cylinder, rod out both ends. |
|---|---|
| 20 | Bore size in mm. |
| ×25 | 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 SDAD20X25SB Is Used
Gripper Jaw Sync
Drives opposing gripper fingers with identical 131.9 N force on extend and retract, ensuring parts are centered without rotational twist.
Dual-End Transfer
Mounts a pusher on one male M6 rod end and a position dog on the other, allowing compact transfer within a 25 mm stroke.
Pin Insertion Press
Utilizes the anti-rotation through-rod to press pins straight over a 25 mm travel, maintaining alignment under 0.5 MPa.
Is the Airtac SDAD Double Rod Slim Cylinder SDAD20X25SB the Right Cylinder?
When sizing this unit, consider the neighboring bores: the SDAD16 yields 86.4 N at 0.5 MPa, whereas the SDAD25 provides 206.2 N. The 20 mm bore hits a balanced 131.9 N, offering a safe working load of roughly 79 N and a vertical lift capacity of about 6.7 kg with a 2:1 margin. The through-rod geometry prevents twisting during extension, and you can mount dual tools or a switch target on the male M6 threads.
Remember that a standard pneumatic setup drifts when air pressure drops or the valve centers, as the fixed NBR bumper only decelerates the stroke end rather than locking the load. For vertical or suspended loads requiring position holding without live pressure, integrate an external rod lock or a pilot-operated check valve. This configuration includes the S magnet and B male rod options, with an M5x0.8 port.
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 SDAD20X25SB FAQ
The double-rod design provides equal force in both directions: 131.9 N at 0.5 MPa and 184.7 N at 0.7 MPa. The theoretical maximum is 27 kgf at 1.0 MPa.
Yes, the B option provides male M6x1.0 threads on both rod ends. You can drive a tool on one side while mounting a dog for a reed or electronic switch on the opposite end.
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Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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