Airtac SDAD Double Rod Slim Cylinder SDAD40X65B
The AirTAC Airtac SDAD Double Rod Slim Cylinder SDAD40X65B is a genuine double-acting COMPACT cylinder with a piston rod out BOTH ends (Ø40mm 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.
- BoreØ40 mm
- Stroke65 mm
- Port sizePT1/8
- Acting typeDouble acting, double rod
- Rod threadM8×1.25 (F) / M14×1.5 (B)
- CushionFixed NBR bumper (both ends)
About the Airtac SDAD Double Rod Slim Cylinder SDAD40X65B
The AirTAC SDAD40X65B is a double-acting compact cylinder featuring a through-rod that exits both ends of the riveted body. Because the rod occupies both chambers, the annular area is identical in each direction, delivering an equal push and pull force of 527.8 N at 0.5 MPa. This symmetry is highly advantageous for loads requiring consistent kinetic energy regardless of travel direction.
This specific configuration includes male M14x1.5 threads on both rod ends, allowing direct mounting of tooling without extra adapters. The short body design drastically reduces required axial mounting depth compared to conventional cylinders. End-of-stroke deceleration is handled by fixed NBR bumpers rather than adjustable air cushions, and this SKU lacks a piston magnet, meaning position sensing is not supported.
Airtac SDAD Double Rod Slim Cylinder SDAD40X65B Technical Specifications
| Model | Airtac SDAD Double Rod Slim Cylinder SDAD40X65B |
|---|---|
| Series | SDAD compact double-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 65 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 SDAD40X65B
| SDAD | Compact double-acting cylinder, rod out both ends. |
|---|---|
| 40 | 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 SDAD40X65B Is Used
Gripper Synchronization
Drives opposing gripper jaws with identical 527.8 N force in both directions, ensuring perfectly centered clamping on delicate machined parts without rotational deflection.
Dual-End Transfer
Uses the male M14x1.5 threads on both ends to push a product forward while simultaneously retracting a return linkage on the opposite side, halving required actuator count.
Balanced Lift Station
Lifts a 26.9 kg vertical payload smoothly using the equal annular area, preventing the sagging or asymmetrical acceleration often seen in single-rod designs.
Is the Airtac SDAD Double Rod Slim Cylinder SDAD40X65B the Right Cylinder?
When sizing this 40 mm bore model, consider the adjacent options. Stepping down to the SDAD32 yields 345.6 N at 0.5 MPa, while stepping up to the SDAD50 provides 824.7 N at 0.5 MPa. The SDAD40X65B sits comfortably in the middle, offering a safe working load of roughly 317 N (about 60 percent of its 0.5 MPa rating) and a vertical lift capacity of approximately 26.9 kg with a 2:1 safety margin.
The through-rod geometry inherently resists twisting, enabling you to drive a mechanism on one end while leaving the opposite end free for a dog or secondary operation. Remember that a standard double-acting 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, integrate an external rod lock or pilot-operated check valve. This variant features a 65 mm stroke, PT1/8 port, and male M14x1.5 rod threads on both ends, with no magnet installed.
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 SDAD40X65B FAQ
The SDAD40X65B delivers an equal force of 527.8 N at 0.5 MPa and 738.9 N at 0.7 MPa in both extend and retract directions, with a theoretical maximum of 108 kgf at 1.0 MPa. The operating pressure range is 0.15 to 1.0 MPa.
Yes, the through-rod design exits both sides of the compact body, allowing you to attach tooling via the male M14x1.5 threads on one end and a dog or secondary fixture on the other. Note that this specific SKU lacks a piston magnet, so it cannot be used with reed or electronic switches.
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