Airtac SDAD Double Rod Slim Cylinder SDAD20X75S
The AirTAC Airtac SDAD Double Rod Slim Cylinder SDAD20X75S is a genuine double-acting COMPACT cylinder with a piston rod out BOTH ends (Ø20mm 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.
- BoreØ20 mm
- Stroke75 mm
- Port sizeM5×0.8
- Acting typeDouble acting, double rod
- Rod threadM4×0.7 (F) / M6×1.0 (B)
- CushionFixed NBR bumper (both ends)
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SDAD Double Rod Slim Cylinder SDAD20X75S
The AirTAC SDAD20X75S is a compact double-acting cylinder featuring a through-rod that exits both ends of the riveted body. Because the rod occupies both chambers, the annular area is identical on extend and retract, yielding an equal push and pull force of 131.9 N at 0.5 MPa. This symmetry is ideal for driving loads that require consistent momentum in both travel directions.
Equipped with a built-in magnet (-S), this unit supports AirTAC reed or electronic switches for end-of-stroke sensing. The 8 mm piston rod provides a 75 mm stroke within a short footprint, saving axial mounting depth where a longer profile cylinder will not fit. End shock is managed by a fixed NBR bumper, not an adjustable air cushion.
Airtac SDAD Double Rod Slim Cylinder SDAD20X75S Technical Specifications
| Model | Airtac SDAD Double Rod Slim Cylinder SDAD20X75S |
|---|---|
| Series | SDAD compact double-rod cylinder |
| Bore size | Ø20 mm |
| Stroke | 75 mm |
| Acting type | Double acting, rod both ends |
| Port size | M5×0.8 |
| Rod end thread | M4×0.7 female / M6×1.0 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 90 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 (Ø20mm)
| Pressure | Force (both directions) |
|---|---|
| 0.5 MPa | 132 N |
| 0.7 MPa | 185 N |
| Max (@1.0 MPa) | 27 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 SDAD20X75S
| SDAD | Compact double-acting cylinder, rod out both ends. |
|---|---|
| 20 | 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 SDAD20X75S Is Used
Symmetric Transfer
Drives a 6.7 kg vertical lift fixture back and forth, utilizing the matching 131.9 N extend and retract forces to maintain steady acceleration without twisting.
Dual-End Profiling
Mounts a cutting blade on the primary rod end and a trip dog on the opposite end to trigger an electronic switch, capitalizing on the anti-rotation through-rod geometry.
Shallow Deck Sorting
Fits into tight machine envelopes using the short riveted body, pushing parts across a 75 mm gap where standard longer cylinders would exceed the available axial depth.
Is the Airtac SDAD Double Rod Slim Cylinder SDAD20X75S the Right Cylinder?
When sizing this 20 mm bore, compare its 131.9 N @0.5 MPa output with neighboring models: the SDAD16 provides 86.4 N, while the SDAD25 offers 206.2 N. For your 75 mm stroke, the safe working load is approximately 79 N (about 60% of the 0.5 MPa figure), allowing a vertical lift of roughly 6.7 kg with a 2:1 safety margin. The through-rod design resists twisting and permits mounting a tool on one end and a dog on the opposite end.
This unit features an M5x0.8 port, female M4x0.7 rod-end threads, and operates at 30-500 mm/s. Note that a plain cylinder drifts when air is lost or the valve centers; the fixed NBR bumper only decelerates near stroke end and does not lock the load. For load holding without live pressure, install an external rod lock or 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 SDAD20X75S FAQ
The double-rod design provides equal force in both directions: 131.9 N at 0.5 MPa, 184.7 N at 0.7 MPa, and a theoretical maximum of 27 kgf at 1.0 MPa.
Yes, the through-rod resists twisting and exits both ends, allowing you to drive a tool on one side while triggering a reed or electronic switch via the built-in magnet on the opposite side.
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Standard models are processed and dispatched in 3-5 business days.
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