Airtac SDAD Double Rod Slim Cylinder SDAD40X30
The AirTAC Airtac SDAD Double Rod Slim Cylinder SDAD40X30 is a genuine double-acting COMPACT cylinder with a piston rod out BOTH ends (Ø40mm bore, 30mm 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
- Stroke30 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 SDAD40X30
The AirTAC SDAD40X30 is a compact double-acting cylinder featuring a through-rod that exits both ends of the riveted body. Because the rod occupies both chambers, the annular area is identical on extend and retract, delivering an equal push and pull force of 527.8 N at 0.5 MPa. This symmetry is highly advantageous for loads requiring perfectly balanced driving force in both directions.
This 40 mm bore unit uses a 16 mm piston rod and a PT1/8 air port. The short body design drastically reduces axial mounting depth compared to standard round-body cylinders. End-of-stroke deceleration is handled by a fixed NBR bumper at each end, which absorbs shock but is not an adjustable air cushion. Note that this specific SKU lacks a piston magnet and therefore cannot support position sensing.
Airtac SDAD Double Rod Slim Cylinder SDAD40X30 Technical Specifications
| Model | Airtac SDAD Double Rod Slim Cylinder SDAD40X30 |
|---|---|
| Series | SDAD compact double-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 30 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 SDAD40X30
| SDAD | Compact double-acting cylinder, rod out both ends. |
|---|---|
| 40 | Bore size in mm. |
| ×30 | 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 SDAD40X30 Is Used
Guided Strip Peeling
Drives a peeling blade on one rod end while the opposite end pushes a matching pressure foot, utilizing the 527.8 N equal force to maintain steady symmetric pressure on the material.
Dual-Side Transfer Gate
Uses the anti-rotation through-rod to shuttle a transfer gate back and forth, ensuring the mechanism remains perfectly aligned without twisting under reversing loads.
Centering Jaws
Mounts opposing centering jaws on both rod ends to grip a workpiece simultaneously from two sides, benefiting from the compact 40 mm body to fit tight machine cells.
Is the Airtac SDAD Double Rod Slim Cylinder SDAD40X30 the Right Cylinder?
When sizing this model, compare its 527.8 N @0.5 MPa output with adjacent bores. Dropping to the SDAD32 yields 345.6 N, while stepping up to the SDAD50 provides 824.7 N. The through-rod geometry resists twisting and permits mounting a tool on one end and a dog on the opposite side.
This configuration features a 30 mm stroke, female M8x1.25 rod-end threads on both sides, and no magnet (no -S suffix). Remember that a plain cylinder drifts when air is lost or the valve is centered; the fixed NBR bumper only decelerates near stroke end and does not function as a lock. For load holding without live pressure, install an external rod lock or pilot-operated check valve.
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 SDAD40X30 FAQ
The double-rod design provides equal force in both directions: 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. Because the rod exits both ends, the extend and retract forces are identical.
Yes, the through-rod design allows you to drive a tool on one end while using the opposite end for a secondary mechanism or dog. The rod also resists twisting. Note that this specific SKU lacks a magnet for switches; you would need the -S variant for position sensing.
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