Airtac SDAD Double Rod Slim Cylinder SDAD20X25B
The AirTAC Airtac SDAD Double Rod Slim Cylinder SDAD20X25B 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 SDAD20X25B
The AirTAC SDAD20X25B 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, yielding perfectly symmetric thrust of 131.9 N at 0.5 MPa. This equal push and pull capacity is ideal for mechanisms requiring balanced resistance.
This specific SKU includes male M6x1.0 threaded rod ends on both sides, allowing direct mounting of tooling at either extremity. The short body design minimizes axial footprint, while the fixed NBR bumper decelerates the piston near stroke completion. Note that this non-magnet version cannot host position switches.
Airtac SDAD Double Rod Slim Cylinder SDAD20X25B Technical Specifications
| Model | Airtac SDAD Double Rod Slim Cylinder SDAD20X25B |
|---|---|
| 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 SDAD20X25B
| 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 SDAD20X25B Is Used
Symmetric Transfer Jaws
Drives a gripper on one end and a synchronization dog on the other, utilizing the 131.9 N equal force to keep delicate electronics part transfer perfectly balanced.
Anti-Twist Edge Guide
The through-rod prevents rotation during rapid 25 mm strokes, maintaining precise alignment for paper or foil web guiding in tight packaging layouts.
Balanced Lift Station
Lifts a 6.7 kg fixture vertically with a 2:1 margin, using the male M6x1.0 threads on both ends to mount the load and a counterweight simultaneously.
Is the Airtac SDAD Double Rod Slim Cylinder SDAD20X25B the Right Cylinder?
When sizing this unit, consider the adjacent bores: stepping down to SDAD16 provides 86.4 N at 0.5 MPa, while moving up to SDAD25 offers 206.2 N. For the SDAD20X25B, a safe working load is roughly 79 N (about 60% of the 131.9 N figure), translating to a vertical lift of approximately 6.7 kg with a 2:1 safety margin. The through-rod geometry resists twisting and lets you drive a tool on one end while using the opposite end for a mechanical dog.
This configuration features an 8 mm rod, M5x0.8 air port, and a 25 mm stroke. Remember that a standard cylinder drifts when air is removed or the valve centers; the NBR bumper only decelerates at the end of travel and does not lock the load. For load holding without live pressure, install an external rod lock or pilot-operated check valve. Because this is the B-option, both rod tips are male M6x1.0.
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 SDAD20X25B FAQ
The push and pull forces are equal because the rod exits both ends. It generates 131.9 N at 0.5 MPa and 184.7 N at 0.7 MPa, with a theoretical maximum of 27 kgf at 1.0 MPa. The maximum operating pressure is 1.0 MPa.
Yes, the through-rod design allows you to attach tooling to both ends simultaneously, which also prevents the piston from twisting. This specific B-option features male M6x1.0 threads on both rod ends for direct mounting.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC SDAD Cylinders
Request a Quote for Airtac SDAD Double Rod Slim Cylinder SDAD20X25B
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.