Airtac SDAD Double Rod Slim Cylinder SDAD25X70B
The AirTAC Airtac SDAD Double Rod Slim Cylinder SDAD25X70B is a genuine double-acting COMPACT cylinder with a piston rod out BOTH ends (Ø25mm bore, 70mm 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
- Stroke70 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 SDAD25X70B
The AirTAC SDAD25X70B is a compact double-acting cylinder featuring a 25 mm bore and a 70 mm stroke. Because the piston rod protrudes from both ends, the annular area remains identical in both chambers. This geometry ensures push and pull forces match exactly at 206.2 N for 0.5 MPa, preventing asymmetric behavior in precision mechanisms.
Equipped with male M8x1.25 threads on both 10 mm rods, this unit allows direct mounting of tooling on one side and a dog or fixture on the opposite side. The short riveted body minimizes axial footprint, while fixed NBR bumpers absorb end-of-stroke impacts. Note this SKU lacks a piston magnet, so position sensing is not supported without the -S option.
Airtac SDAD Double Rod Slim Cylinder SDAD25X70B Technical Specifications
| Model | Airtac SDAD Double Rod Slim Cylinder SDAD25X70B |
|---|---|
| Series | SDAD compact double-rod cylinder |
| Bore size | Ø25 mm |
| Stroke | 70 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 SDAD25X70B
| SDAD | Compact double-acting cylinder, rod out both ends. |
|---|---|
| 25 | Bore size in mm. |
| ×70 | 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 SDAD25X70B Is Used
Symmetric Gripper Actuation
Drives a synchronized gripper where the equal 206.2 N push and pull forces prevent jaw binding during precision part clamping.
Dual-End Transfer Pusher
Uses the male M8x1.25 rods on both ends to push a product on one side while simultaneously triggering a mechanical dog on the opposite end.
Anti-Rotation Alignment Stop
The through-rod geometry resists twisting forces, keeping a 70 mm stroke alignment pin perfectly straight during heavy-duty panel feeding.
Is the Airtac SDAD Double Rod Slim Cylinder SDAD25X70B the Right Cylinder?
When sizing this 25 mm bore unit, consider the neighboring bores: the SDAD20 provides 131.9 N at 0.5 MPa, whereas the SDAD32 offers 345.6 N at 0.5 MPa. Based on the 206.2 N output at 0.5 MPa, a safe working load is roughly 124 N, which translates to a vertical lift capacity of about 10.5 kg with a 2:1 safety margin.
The through-rod design inherently resists twisting, making it superior for applications demanding high torsional rigidity. Remember that a standard cylinder will drift if air pressure drops or the valve centers; the fixed NBR bumper only decelerates the stroke end and does not function as a lock. For secure load holding, integrate an external rod lock or a pilot-operated check valve. This specific configuration features an M5x0.8 port, male M8x1.25 rod threads, and no magnet.
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 SDAD25X70B FAQ
The push and pull forces are identical because of the double-rod design. It generates 206.2 N at 0.5 MPa and 288.6 N at 0.7 MPa. The theoretical maximum force is 42 kgf at 1.0 MPa, with a proof pressure of 1.5 MPa.
Yes, the through-rod extends from both sides, allowing you to drive a tool on one end and mount a dog or secondary fixture on the other. This specific model features male M8x1.25 threads on both 10 mm rods to facilitate dual-end mounting.
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1-Year Warranty
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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