Airtac SDAD Double Rod Slim Cylinder SDAD40X25
The AirTAC Airtac SDAD Double Rod Slim Cylinder SDAD40X25 is a genuine double-acting COMPACT cylinder with a piston rod out BOTH ends (Ø40mm 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.
- BoreØ40 mm
- Stroke25 mm
- Port sizePT1/8
- Acting typeDouble acting, double rod
- Rod threadM8×1.25 (F) / M14×1.5 (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 SDAD40X25
The AirTAC SDAD40X25 is a double-acting, double-rod compact cylinder featuring a 40mm bore and 25mm stroke. Because a 16mm rod exits both ends of the riveted body, the annular piston area is identical in each chamber, yielding equal push and pull forces of 527.8 N at 0.5 MPa. This symmetry is ideal for driving loads that require consistent kinetic energy in both directions.
The through-rod geometry inherently resists twisting, providing anti-rotation stability without external guides. Its short body length minimizes axial mounting footprint where space is tight. End-of-stroke deceleration is handled by fixed NBR bumpers rather than adjustable air cushions. This specific SKU lacks a piston magnet, so position sensing is not supported without upgrading to the -S variant.
Airtac SDAD Double Rod Slim Cylinder SDAD40X25 Technical Specifications
| Model | Airtac SDAD Double Rod Slim Cylinder SDAD40X25 |
|---|---|
| Series | SDAD compact double-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 25 mm |
| Acting type | Double acting, rod both ends |
| Port size | PT1/8 |
| Rod end thread | M8×1.25 female / M14×1.5 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 (Ø40mm)
| Pressure | Force (both directions) |
|---|---|
| 0.5 MPa | 528 N |
| 0.7 MPa | 739 N |
| Max (@1.0 MPa) | 108 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 SDAD40X25
| SDAD | Compact double-acting cylinder, rod out both ends. |
|---|---|
| 40 | 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 SDAD40X25 Is Used
Symmetric Gripper Actuation
Drives a synchronized clamping jaw that must push and pull with equal 527.8 N force, preventing part deformation during transfer.
Dual-End Transfer Mechanism
Mounts a work tool on one rod end and a timing dog on the opposite end, leveraging the anti-rotation through-rod for precise 25mm indexing.
Is the Airtac SDAD Double Rod Slim Cylinder SDAD40X25 the Right Cylinder?
When sizing this model, compare its output against neighboring bores. Stepping down to the SDAD32 provides 345.6 N at 0.5 MPa, while stepping up to the SDAD50 yields 824.7 N at 0.5 MPa.
The dual-end rod allows mounting a tool on one side and a dog or fixture on the opposite end. Remember that a standard cylinder drifts when air pressure is lost or the valve centers; use an external rod lock or pilot-operated check valve for load holding. This configuration uses a PT1/8 port, female M8x1.25 rod threads, and operates at 30-500 mm/s. It lacks the -S magnet option for reed or electronic switches.
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 SDAD40X25 FAQ
The push and pull forces are equal because of the double-rod design. It generates 527.8 N at 0.5 MPa, 738.9 N at 0.7 MPa, and a theoretical maximum of 108 kgf at 1.0 MPa. The maximum operating pressure is 1.0 MPa.
Yes, the 16mm through-rod protrudes from both sides, allowing you to drive a tool on one end and mount a dog on the other. The through-rod also resists twisting, providing stable anti-rotation geometry for your fixture.
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Standard models are processed and dispatched in 3-5 business days.
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