Airtac SDAD Double Rod Slim Cylinder SDAD40X90B
The AirTAC Airtac SDAD Double Rod Slim Cylinder SDAD40X90B 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 SDAD40X90B
The AirTAC SDAD40X90B 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, delivering an equal push and pull force of 527.8 N at 0.5 MPa. This symmetric thrust is ideal for balancing loads without sudden shifts in kinetic energy.
This specific SKU includes male M14x1.5 threaded rods on both ends for direct tool mounting, alongside a 16 mm rod diameter and PT1/8 air ports. The short body design drastically reduces axial mounting depth compared to round-body alternatives. 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 SDAD40X90B Technical Specifications
| Model | Airtac SDAD Double Rod Slim Cylinder SDAD40X90B |
|---|---|
| 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 SDAD40X90B
| 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 SDAD40X90B Is Used
Symmetric Transfer Chuck
Equal 527.8 N push and pull force securely clamps and releases delicate wafers without applying uneven lateral stress during transfer.
Anti-Twist Guide Rail
The dual-exit through-rod resists torsional twisting, keeping a 90 mm stroke alignment jig perfectly straight during heavy pressing tasks.
Dual-End Profiler
Male M14x1.5 threads mount a cutting tool on the front and a mechanical dog on the rear, synchronizing two machining actions in one stroke.
Is the Airtac SDAD Double Rod Slim Cylinder SDAD40X90B the Right Cylinder?
When sizing this 40 mm bore, consider the neighbouring capacities at 0.5 MPa: stepping down to the SDAD32 yields 345.6 N, while moving up to the SDAD50 provides 824.7 N. Based on the 527.8 N output, a safe working load is approximately 317 N (about 60 percent of capacity), translating to a vertical lift capability of roughly 26.9 kg with a 2:1 safety margin. Ensure your application leaves clearance for the 90 mm stroke extending from both faces.
The through-rod geometry provides excellent anti-rotation resistance and allows driving a tool on one end while mounting a secondary mechanism on the opposite side. Note that a plain cylinder drifts when air is lost or the valve is centered; the fixed bumper only decelerates near stroke end and will not hold the load. For position holding without live pressure, install an external rod lock or pilot-operated check valve. This configuration lacks the -S magnet, so magnetic switches cannot be used.
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 SDAD40X90B FAQ
The push and pull forces are equal because the rod occupies both chambers. It generates 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, the piston will drift if air pressure is lost or the valve is centered. The fixed NBR bumper only decelerates the stroke near the end and does not act as a brake. For load holding, you must add an external rod lock or a pilot-operated check valve.
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