Airtac SDAD Double Rod Slim Cylinder SDAD40X90
The AirTAC Airtac SDAD Double Rod Slim Cylinder SDAD40X90 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 SDAD40X90
The AirTAC SDAD40X90 is a double-acting compact cylinder featuring a 16 mm piston rod exiting both ends of its riveted body. Because a rod occupies each chamber, the annular area is identical on extend and retract, yielding exactly 527.8 N of push and pull force at 0.5 MPa. This symmetry is a major advantage when driving rigid loads that require consistent kinetic energy in both directions.
The through-rod geometry inherently resists twisting, allowing you to mount a work tool on one end and a dog or switch on the opposite side. With a 90 mm stroke and PT1/8 porting, this unit operates at 30-500 mm/s. End-of-stroke deceleration is handled by fixed NBR bumpers rather than adjustable air cushions, keeping the overall length short for tight machinery layouts.
Airtac SDAD Double Rod Slim Cylinder SDAD40X90 Technical Specifications
| Model | Airtac SDAD Double Rod Slim Cylinder SDAD40X90 |
|---|---|
| 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 SDAD40X90
| 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 SDAD40X90 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.
Dual-End Transfer Pusher
Mounts a pusher blade on the front rod and a tracking dog on the rear, using the anti-rotation through-rod to transfer products smoothly between conveyor belts.
Symmetric Lift Station
Lifts a 26.9 kg platform vertically with a 2:1 margin, relying on the matched extend and retract forces to prevent binding during rapid 90 mm ascents.
Is the Airtac SDAD Double Rod Slim Cylinder SDAD40X90 the Right Cylinder?
When sizing this 40 mm bore, compare its 527.8 N @0.5 MPa output against adjacent models. Dropping to SDAD32 provides 345.6 N, while stepping up to SDAD50 yields 824.7 N. Based on the 527.8 N figure, a safe working load is roughly 317 N (about 60 percent capacity), translating to a vertical lift capability of approximately 26.9 kg with a 2:1 safety margin.
This SKU lacks the S magnet suffix, so it cannot accept AirTAC reed or electronic switches. The female M8x1.25 rod-end threads are present on both ends. Remember that the fixed NBR bumper only decelerates the stroke end; it does not hold position. If air pressure drops, the piston will drift, requiring an external rod lock or pilot-operated check valve for load holding.
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 SDAD40X90 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 resists twisting and exits both ends, allowing a tool on one side and a dog on the other. However, this specific SKU lacks the S magnet, so it cannot trigger magnetic reed or electronic switches without upgrading to the -S variant.
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