Airtac SDAD Double Rod Slim Cylinder SDAD25X40B
The AirTAC Airtac SDAD Double Rod Slim Cylinder SDAD25X40B is a genuine double-acting COMPACT cylinder with a piston rod out BOTH ends (Ø25mm bore, 40mm 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.
- BoreØ25 mm
- Stroke40 mm
- Port sizeM5×0.8
- Acting typeDouble acting, double rod
- Rod threadM5×0.8 (F) / M8×1.25 (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 SDAD25X40B
The AirTAC SDAD25X40B is a compact double-acting cylinder featuring a 25 mm bore and 40 mm stroke, with piston rods exiting both ends of its short riveted body. Because a rod occupies each chamber, the annular area is identical in both directions, giving you exactly 206.2 N of push and pull force at 0.5 MPa. This symmetric output is ideal for balanced tooling, while the through-rod geometry inherently resists twisting during operation.
This specific SKU includes male M8x1.25 thread rods on both ends for direct mechanical mounting. The body is fitted with an M5x0.8 air port and relies on a fixed NBR bumper at each end to decelerate the stroke. Note that this configuration lacks a piston magnet, so it cannot support reed or electronic switches without upgrading to the -S variant.
Airtac SDAD Double Rod Slim Cylinder SDAD25X40B Technical Specifications
| Model | Airtac SDAD Double Rod Slim Cylinder SDAD25X40B |
|---|---|
| Series | SDAD compact double-rod cylinder |
| Bore size | Ø25 mm |
| Stroke | 40 mm |
| Acting type | Double acting, rod both ends |
| Port size | M5×0.8 |
| Rod end thread | M5×0.8 female / M8×1.25 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.
Theoretical Output Force (Ø25mm)
| Pressure | Force (both directions) |
|---|---|
| 0.5 MPa | 206 N |
| 0.7 MPa | 289 N |
| Max (@1.0 MPa) | 42 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 SDAD25X40B
| SDAD | Compact double-acting cylinder, rod out both ends. |
|---|---|
| 25 | Bore size in mm. |
| ×40 | 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 SDAD25X40B Is Used
Symmetric Transfer Jaws
Drives opposing gripper jaws with 206.2 N of equal force in both directions, ensuring delicate electronics are centered without rotational twist during transit.
Vertical Lift Stations
Lifts a 10.5 kg platen vertically using the dual male M8x1.25 rods, providing stable guidance and preventing the load from skewing in tight riveted-body envelopes.
Dual-End Tooling Carriage
Mounts a cutting blade on one end and a mechanical dog on the opposite end, utilizing the 40 mm stroke to process materials while triggering external limits.
Is the Airtac SDAD Double Rod Slim Cylinder SDAD25X40B the Right Cylinder?
When sizing this unit, compare its 206.2 N output at 0.5 MPa against adjacent bores: the SDAD20 provides 131.9 N, while the SDAD32 offers 345.6 N. Based on the 206.2 N figure, your safe working load is approximately 124 N (about 60 percent capacity), translating to a vertical lift capability of roughly 10.5 kg with a 2:1 safety margin. The dual male M8x1.25 rod ends allow you to drive a tool on one side while mounting a mechanical dog on the opposite side.
Remember that a standard compact cylinder cannot hold a load if air pressure drops or the valve is centered; the piston will drift. The fixed NBR bumper only decelerates the stroke near the end of travel and does not act as a lock. For suspended or vertical loads, install an external rod lock or a pilot-operated check valve. Confirm your application requires the 25 mm bore, 40 mm stroke, M5x0.8 port, and male rod threads before ordering.
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 SDAD25X40B FAQ
The push and pull forces are identical because the double-rod design creates equal annular areas. It generates 206.2 N at 0.5 MPa and 288.6 N at 0.7 MPa, with a theoretical maximum of 42 kgf at 1.0 MPa. The maximum operating pressure is 1.0 MPa.
Yes, the through-rod design allows you to mount tooling or fixtures on both ends simultaneously. This specific SDAD25X40B model features male M8x1.25 threads on both rods, and the through-rod geometry helps resist twisting during operation.
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Standard models are processed and dispatched in 3-5 business days.
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