Airtac SDAD Double Rod Slim Cylinder SDAD40X50B
The AirTAC Airtac SDAD Double Rod Slim Cylinder SDAD40X50B is a genuine double-acting COMPACT cylinder with a piston rod out BOTH ends (Ø40mm bore, 50mm 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
- Stroke50 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 SDAD40X50B
The AirTAC SDAD40X50B 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, giving you exactly 527.8 N of push and pull force at 0.5 MPa. This symmetric thrust is ideal for balancing loads without tweaking pressure levels.
Equipped with male M14x1.5 threads on both 16 mm rod ends, this unit allows dual-end tooling or mechanical stops. The short body design minimizes axial mounting depth where larger profile cylinders fail to fit. End-of-stroke deceleration relies on a fixed NBR bumper rather than an adjustable air cushion.
Airtac SDAD Double Rod Slim Cylinder SDAD40X50B Technical Specifications
| Model | Airtac SDAD Double Rod Slim Cylinder SDAD40X50B |
|---|---|
| Series | SDAD compact double-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 50 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 SDAD40X50B
| SDAD | Compact double-acting cylinder, rod out both ends. |
|---|---|
| 40 | Bore size in mm. |
| ×50 | 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 SDAD40X50B Is Used
Web Guiding Brakes
Utilize the equal push and pull thrust of 527.8 N to tension and guide film or paper webs without asymmetric drift.
Dual-End Transfer
Mount a gripper on one male M14x1.5 rod end and a mechanical dog on the opposite side to trigger external limit switches.
Balanced Lift Stations
Lift 26.9 kg vertical loads smoothly, relying on the anti-rotation through-rod to prevent platform twisting during elevation.
Is the Airtac SDAD Double Rod Slim Cylinder SDAD40X50B the Right Cylinder?
When sizing this 40 mm bore, compare it directly with its neighbors. Dropping down to the SDAD32 yields 345.6 N at 0.5 MPa, whereas stepping up to the SDAD50 provides 824.7 N. This SDAD40X50B sits comfortably in the middle, delivering 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 prevents twisting during extension, allowing precise dual-end actuation. Remember that a standard cylinder drifts when air pressure is lost or the valve centers; utilize an external rod lock or pilot-operated check valve for strict load holding. This specific SKU lacks the S magnet option, meaning position sensing is not supported, and it features PT1/8 ports.
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 SDAD40X50B FAQ
The push and pull forces are identical because of the double-rod design. It generates 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 through-rod extends from both sides, allowing you to drive a tool on one end while using the opposite male M14x1.5 threaded end for a dog or secondary mechanism. The design also inherently resists mechanical rotation.
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