Airtac SDAD Double Rod Slim Cylinder SDAD40X90S
The AirTAC Airtac SDAD Double Rod Slim Cylinder SDAD40X90S is a genuine double-acting COMPACT cylinder with a piston rod out BOTH ends (Ø40mm bore, 90mm 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
- Stroke90 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 SDAD40X90S
The AirTAC SDAD40X90S is a double-acting, double-rod compact cylinder featuring a 40mm bore and a 90mm stroke. Because the piston rod exits both ends of the riveted body, the annular area remains identical in both chambers, delivering an equal push and pull force of 527.8 N at 0.5 MPa. This symmetric thrust is highly advantageous for driving loads that require consistent kinetic energy in both directions.
The through-rod geometry inherently resists twisting, providing superior anti-rotation stability compared to single-rod units. A built-in magnet (-S) enables position sensing via AirTAC reed or electronic switches fitted directly into the body grooves. End-of-stroke deceleration is handled by a fixed NBR bumper at each end, which absorbs shock without requiring manual adjustment. The short body design drastically saves axial mounting depth in tight machinery envelopes.
Airtac SDAD Double Rod Slim Cylinder SDAD40X90S Technical Specifications
| Model | Airtac SDAD Double Rod Slim Cylinder SDAD40X90S |
|---|---|
| Series | SDAD compact double-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 90 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 SDAD40X90S
| SDAD | Compact double-acting cylinder, rod out both ends. |
|---|---|
| 40 | Bore size in mm. |
| ×90 | 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 SDAD40X90S Is Used
Gripper Jaw Synchronization
Drives opposing gripper arms with equal 527.8 N force in both directions, ensuring perfectly centered clamping on precision machined parts without rotational deflection.
Dual-End Transfer Shuttle
Mounts a workpiece pusher on one rod end and a magnetic dog on the opposite end, allowing external reed switches to confirm stroke completion while transferring components.
Balanced Vertical Lift
Lifts delicate electronic trays vertically with matched extend and retract thrust, preventing sagging or asymmetric acceleration during the 90mm travel cycle.
Is the Airtac SDAD Double Rod Slim Cylinder SDAD40X90S the Right Cylinder?
When sizing this unit, compare its bilateral 527.8 N output at 0.5 MPa against adjacent bores. Stepping down to the SDAD32 yields 345.6 N, whereas stepping up to the SDAD50 provides 824.7 N. Based on the 527.8 N figure, the safe working load is approximately 317 N (operating at a 60% derating), translating to a vertical lift capacity of roughly 26.9 kg with a 2:1 safety margin.
The through-rod allows you to mount a tool on one end and a dog or switch on the opposite end simultaneously. This configuration uses a PT1/8 port, a 16mm rod diameter, and female M8x1.25 rod-end threads. Remember that a plain cylinder does not hold its load if air pressure drops or the valve is centred; the piston will drift. For secure 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 SDAD40X90S 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 through-rod exits both ends, allowing you to attach a tool on one side and a sensing dog on the other. The built-in magnet works with AirTAC reed or electronic switches, and the fixed NBR bumper handles end-of-stroke deceleration.
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