Airtac SDAD Double Rod Slim Cylinder SDAD40X65
The AirTAC Airtac SDAD Double Rod Slim Cylinder SDAD40X65 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 SDAD40X65
The AirTAC SDAD40X65 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, yielding equal push and pull forces of 527.8 N at 0.5 MPa. This symmetry is ideal for driving loads that require consistent momentum in both strokes.
The 16 mm diameter rod resists twisting during operation, allowing you to mount a tool on one end and a dog on the opposite side. End-of-stroke deceleration is handled by a fixed NBR bumper rather than an adjustable air cushion. Note this specific SKU lacks a piston magnet, so position sensing is not supported without the -S option.
Airtac SDAD Double Rod Slim Cylinder SDAD40X65 Technical Specifications
| Model | Airtac SDAD Double Rod Slim Cylinder SDAD40X65 |
|---|---|
| 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 SDAD40X65
| 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 SDAD40X65 Is Used
Gripper Jaw Sync
Drives symmetrical gripper jaws where the 527.8 N equal force ensures balanced clamping pressure during both extend and retract movements.
Transfer Pusher
Pushes parts across a conveyor lane using the anti-rotation through-rod to maintain precise alignment on the 65 mm stroke.
Flap Folder
Folds carton flaps simultaneously from both ends, utilizing the compact riveted body to fit within tight packaging machinery frames.
Is the Airtac SDAD Double Rod Slim Cylinder SDAD40X65 the Right Cylinder?
When sizing this 40 mm bore, compare its 527.8 N output at 0.5 MPa against neighboring models. Dropping down to the SDAD32 provides 345.6 N, while stepping up to the SDAD50 offers 824.7 N. A safe working load is approximately 317 N, assuming a 60 percent safety margin of the 0.5 MPa figure. Vertically, it can lift around 26.9 kg with a 2:1 safety factor.
The through-rod geometry prevents rotation and enables dual-end mounting, but remember the cylinder will drift if air pressure is lost or the valve is centered. Use an external rod lock or pilot-operated check valve for load holding. This configuration specifies a 65 mm stroke, PT1/8 port, female 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 SDAD40X65 FAQ
The double-rod design provides equal force in both directions. It delivers 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.
Yes, the through-rod exits both sides to resist twisting, allowing you to drive a tool on one end while mounting a dog or secondary mechanism on the other. Note this non-S SKU lacks a magnet for switches.
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