Airtac SDAD Double Rod Slim Cylinder SDAD40X80B
The AirTAC Airtac SDAD Double Rod Slim Cylinder SDAD40X80B is a genuine double-acting COMPACT cylinder with a piston rod out BOTH ends (Ø40mm bore, 80mm 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
- Stroke80 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 SDAD40X80B
The AirTAC SDAD40X80B is a compact double-acting cylinder featuring a 40mm bore and an 80mm stroke. Because the piston rod exits both ends of the riveted body, the annular area remains identical in both chambers. This geometry ensures push force equals pull force, delivering exactly 527.8 N at 0.5 MPa in each direction. The through-rod design inherently resists twisting, providing stable linear motion for demanding assemblies.
Equipped with male M14x1.5 threads on the 16mm diameter rods at both ends, this unit allows direct mounting of tooling on one side and a dog or mechanism on the opposite side. The short body profile saves axial mounting depth compared to standard round-body options. End-of-stroke deceleration is handled by a fixed NBR bumper, which absorbs shock but is not an adjustable air cushion.
Airtac SDAD Double Rod Slim Cylinder SDAD40X80B Technical Specifications
| Model | Airtac SDAD Double Rod Slim Cylinder SDAD40X80B |
|---|---|
| Series | SDAD compact double-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 80 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 SDAD40X80B
| SDAD | Compact double-acting cylinder, rod out both ends. |
|---|---|
| 40 | Bore size in mm. |
| ×80 | 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 SDAD40X80B Is Used
Gripper Jaw Actuation
Drives symmetric gripper jaws where the anti-rotation through-rod ensures the 527.8 N clamping force remains perfectly aligned without twisting under load.
Dual-End Transfer
Mounts a pusher plate on one male M14x1.5 rod end and a position dog on the opposite end, allowing compact spacing in a 40mm bore transfer station.
Vertical Lift Stop
Lifts a 26.9 kg payload vertically using the equal bidirectional force, relying on the fixed NBR bumper to absorb the shock at the 80mm stroke end.
Is the Airtac SDAD Double Rod Slim Cylinder SDAD40X80B the Right Cylinder?
When sizing this 40mm bore model, consider its neighbours: stepping down to the SDAD32 yields 345.6 N at 0.5 MPa, while stepping up to the SDAD50 provides 824.7 N. The SDAD40X80B sits perfectly in the middle with 527.8 N. Based on this 0.5 MPa output, the safe working load is approximately 317 N, allowing a vertical lift of about 26.9 kg with a 2:1 safety margin. This specific SKU includes male M14x1.5 rod threads (the -B option) on both ends and lacks a piston magnet, meaning it cannot accept magnetic switches without upgrading to the -S variant.
The through-rod geometry prevents rotation and enables dual-end actuation, but remember that a plain cylinder does not hold position if air pressure drops or the valve is centred. The piston will drift, as the fixed NBR bumper only decelerates the stroke near the end points. For load holding without live pressure, integrate an external rod lock or a pilot-operated check valve into your pneumatic circuit.
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 SDAD40X80B FAQ
Because it is a double-rod cylinder, the force is equal 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. The maximum operating pressure is 1.0 MPa.
No, this specific SKU does not have a piston magnet. To use AirTAC reed or electronic switches, you must select the -S variant. However, the dual male M14x1.5 rod ends still allow you to mount mechanical dogs or tooling on both sides.
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