Airtac SDAD Double Rod Slim Cylinder SDAD40X35S
The AirTAC Airtac SDAD Double Rod Slim Cylinder SDAD40X35S is a genuine double-acting COMPACT cylinder with a piston rod out BOTH ends (Ø40mm bore, 35mm 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
- Stroke35 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 SDAD40X35S
The AirTAC SDAD40X35S is a double-acting, double-rod compact cylinder featuring a 40 mm bore and a 35 mm stroke. Because the piston rod exits both ends of the riveted body, the annular area remains identical in each chamber. This geometry ensures push force equals pull force, delivering exactly 527.8 N at 0.5 MPa in both directions. The short body design drastically reduces axial mounting depth compared to conventional round-body units.
A 16 mm diameter rod protrudes from each end, providing inherent anti-rotation resistance and allowing you to drive a tool on one side while mounting a dog on the opposite side. Equipped with a built-in magnet (-S), this unit interfaces directly with AirTAC reed or electronic switches via the body sensor grooves. End-of-stroke energy is managed solely by a fixed NBR bumper, which decelerates the piston rather than acting as an adjustable air cushion.
Airtac SDAD Double Rod Slim Cylinder SDAD40X35S Technical Specifications
| Model | Airtac SDAD Double Rod Slim Cylinder SDAD40X35S |
|---|---|
| Series | SDAD compact double-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 35 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 SDAD40X35S
| SDAD | Compact double-acting cylinder, rod out both ends. |
|---|---|
| 40 | Bore size in mm. |
| ×35 | 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 SDAD40X35S Is Used
Guided Pick-and-Place
The equal 527.8 N push/pull force and anti-rotation through-rod keep symmetrical gripper loads perfectly stable during high-speed vertical transfers.
Dual-End Timing Mechanism
Mount a work tool on one rod end and a physical dog on the opposite end to trigger external reed or electronic switches without sacrificing actuation output.
Carton Forming Jig
The compact riveted body fits into tight machine frames, while the fixed NBR bumper reliably absorbs the shock of repeated folding strokes.
Is the Airtac SDAD Double Rod Slim Cylinder SDAD40X35S the Right Cylinder?
When sizing this unit, consider the neighboring bores: the SDAD32 yields 345.6 N at 0.5 MPa, while the larger SDAD50 provides 824.7 N. The through-rod geometry prevents twisting during extension, making it ideal for guided gripper setups.
This specific configuration includes the -S magnet for position sensing and uses female M8x1.25 rod-end threads on both ends, with a PT1/8 air port. Remember that a standard cylinder does not hold position if air pressure drops or the valve centers; the piston will drift. For load holding without live pressure, integrate an external rod lock or a 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 SDAD40X35S FAQ
The double-rod design provides equal force in both directions: 527.8 N at 0.5 MPa and 738.9 N at 0.7 MPa. The theoretical maximum is 108 kgf at 1.0 MPa, with a proof pressure of 1.5 MPa.
Yes, the 16 mm through-rod exits both sides, allowing you to mount a tool on one end and a sensor dog on the other. The built-in magnet works with AirTAC reed or electronic switches, and the geometry inherently resists twisting.
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Standard models are processed and dispatched in 3-5 business days.
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