Airtac SDAD Double Rod Slim Cylinder SDAD40X75B
The AirTAC Airtac SDAD Double Rod Slim Cylinder SDAD40X75B is a genuine double-acting COMPACT cylinder with a piston rod out BOTH ends (Ø40mm bore, 75mm 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
- Stroke75 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 SDAD40X75B
The AirTAC SDAD40X75B is a double-acting, double-rod compact cylinder featuring a 40 mm bore and a 75 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 either direction. The through-rod design inherently resists twisting, providing stable linear motion for demanding pick-and-place tasks.
Equipped with male M14x1.5 thread on both rod ends, this unit allows direct mounting of tooling on one side and a dog or fixture on the opposite side. The short body profile minimizes axial footprint where space is tight. 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 it cannot host reed or electronic switches without changing to an -S variant.
Airtac SDAD Double Rod Slim Cylinder SDAD40X75B Technical Specifications
| Model | Airtac SDAD Double Rod Slim Cylinder SDAD40X75B |
|---|---|
| Series | SDAD compact double-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 75 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 SDAD40X75B
| SDAD | Compact double-acting cylinder, rod out both ends. |
|---|---|
| 40 | Bore size in mm. |
| ×75 | 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 SDAD40X75B Is Used
Gripper Jaw Actuation
Drives opposed grippers where the 527.8 N equal push-pull force ensures balanced clamping pressure on precision metal parts during machining.
Dual-End Transfer
Mounts a workpiece lifter on one male M14x1.5 end and a cam dog on the other, allowing mechanical sequencing without twisting.
Vertical Lift Stops
Raises and lowers a 26.9 kg payload using the through-rod anti-rotation property to prevent binding in tight vertical transfer channels.
Is the Airtac SDAD Double Rod Slim Cylinder SDAD40X75B the Right Cylinder?
When sizing this 40 mm bore model, compare its 527.8 N output at 0.5 MPa against adjacent options. Dropping down to the SDAD32 yields 345.6 N, while stepping up to the SDAD50 provides 824.7 N. Calculating a 60 percent safety margin on the 527.8 N figure gives a safe working load of roughly 317 N, translating to a vertical lift capacity of about 26.9 kg with a 2:1 factor. Choose the SDAD40X75B when your symmetric load falls within this range.
The through-rod geometry prevents rotation and enables dual-end actuation, but remember a standard cylinder drifts when air pressure is lost or the valve centers. The fixed NBR bumper only decelerates the stroke end; it will not hold a load. For vertical or suspended loads requiring fail-safe holding, integrate an external rod lock or pilot-operated check valve. This configuration features a PT1/8 port, no magnet, and male M14x1.5 rod threads on both ends.
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 SDAD40X75B 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. Operating pressure ranges from 0.15 to 1.0 MPa, with a proof pressure of 1.5 MPa.
No, this specific SKU does not have a piston magnet. You must select the -S option to use AirTAC reed or electronic switches. However, the male M14x1.5 threaded rods on both ends allow you to mount a mechanical dog or physical sensor on the opposite side from your tooling.
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