Airtac SDAD Double Rod Slim Cylinder SDAD25X65B
The AirTAC Airtac SDAD Double Rod Slim Cylinder SDAD25X65B is a genuine double-acting COMPACT cylinder with a piston rod out BOTH ends (Ø25mm 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.
- BoreØ25 mm
- Stroke65 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 SDAD25X65B
The AirTAC SDAD25X65B is a double-acting, double-rod compact cylinder featuring a 25 mm bore and 65 mm stroke. Because a rod exits both ends, the annular piston area is identical in each direction, yielding equal push and pull forces of 206.2 N at 0.5 MPa. This symmetry is ideal for driving loads that require consistent kinetic energy regardless of travel direction.
The through-rod geometry inherently resists twisting, providing stable guidance without external rails. Its short riveted body minimizes axial mounting depth where space is tight. This specific SKU includes male M8x1.25 threads on both rod ends and lacks a piston magnet, meaning it cannot directly host magnetic switches. End-of-stroke deceleration is handled by fixed NBR bumpers rather than adjustable cushions.
Airtac SDAD Double Rod Slim Cylinder SDAD25X65B Technical Specifications
| Model | Airtac SDAD Double Rod Slim Cylinder SDAD25X65B |
|---|---|
| Series | SDAD compact double-rod cylinder |
| Bore size | Ø25 mm |
| Stroke | 65 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 SDAD25X65B
| SDAD | Compact double-acting cylinder, rod out both ends. |
|---|---|
| 25 | 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).
Where the Airtac SDAD Double Rod Slim Cylinder SDAD25X65B Is Used
Symmetric Transfer Arm
Drives a pick-and-place arm requiring identical 206.2 N push and pull forces to shuttle parts evenly in both directions without twisting.
Dual-End Gauging Fixture
Uses the male M8x1.25 rod exiting the rear to mount a physical dog, triggering an external limit switch while the front drives the inspection probe.
Compact Strip Ejector
Fits within a tight 25 mm bore footprint to eject thin material strips, using the fixed NBR bumpers to absorb the end-of-stroke impact.
Is the Airtac SDAD Double Rod Slim Cylinder SDAD25X65B the Right Cylinder?
When sizing this unit, consider the neighboring bores: stepping down to the SDAD20 provides 131.9 N at 0.5 MPa, while stepping up to the SDAD32 yields 345.6 N at 0.5 MPa. The 25 mm bore offers a calculated safe working load of roughly 124 N (about 60% of the 0.5 MPa rating) and can vertically lift approximately 10.5 kg with a 2:1 safety margin. Choose this male-threaded (M8x1.25) variant when your tooling requires externally threaded mounting studs on both sides.
Leverage the dual-end design to mount a work tool on one side and a mechanical dog on the opposite end. Remember that a standard cylinder drifts when air pressure is lost or the valve is centered; the NBR bumper only decelerates the stroke end and does not function as a lock. For load holding without live pressure, integrate an external rod lock or pilot-operated check valve. Operating speed ranges from 30-500 mm/s, fed by 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 SDAD25X65B FAQ
The double-rod design provides equal force in both directions: 206.2 N at 0.5 MPa, 288.6 N at 0.7 MPa, and a theoretical maximum of 42 kgf at 1.0 MPa. The maximum operating pressure is 1.0 MPa.
Yes, the through-rod resists rotation and allows tool mounting on one end while the opposite end remains free for a dog or mechanical stop. Note that this specific SKU lacks a piston magnet, so it cannot host AirTAC reed or electronic switches without upgrading to the -S variant.
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