Airtac SDAD Double Rod Slim Cylinder SDAD20X35
The AirTAC Airtac SDAD Double Rod Slim Cylinder SDAD20X35 is a genuine double-acting COMPACT cylinder with a piston rod out BOTH ends (Ø20mm bore, 35mm 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
- Stroke35 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 SDAD20X35
The AirTAC SDAD20X35 is a double-acting, double-rod compact cylinder featuring a 20 mm bore and 35 mm stroke. Because the rod exits both ends, the annular area is identical in each chamber, yielding equal push and pull forces of 131.9 N at 0.5 MPa. This symmetric output is perfect for balanced actuation.
The through-rod geometry inherently resists twisting, allowing you to mount a work tool on one end and a dog or bracket on the opposite side. Its short riveted body minimizes axial footprint, while a fixed NBR bumper at each end decelerates the piston near stroke limits. This unit lacks a piston magnet, so it cannot support magnetic sensing without the -S option.
Airtac SDAD Double Rod Slim Cylinder SDAD20X35 Technical Specifications
| Model | Airtac SDAD Double Rod Slim Cylinder SDAD20X35 |
|---|---|
| Series | SDAD compact double-rod cylinder |
| Bore size | Ø20 mm |
| Stroke | 35 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 SDAD20X35
| SDAD | Compact double-acting cylinder, rod out both ends. |
|---|---|
| 20 | Bore size in mm. |
| ×35 | 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 SDAD20X35 Is Used
Gripper Jaw Sync
Drives opposing gripper fingers with identical 131.9 N force in both directions, ensuring parts are clamped securely without rotational twist.
Transfer Pusher
Uses the dual-end through-rod to push a product on one side while mounting a mechanical dog on the opposite end to trip a limit switch.
Balanced Lift Stage
Lifts a 6.7 kg vertical payload with a 2:1 margin, relying on the equal push-pull geometry to prevent binding in compact packaging machines.
Is the Airtac SDAD Double Rod Slim Cylinder SDAD20X35 the Right Cylinder?
When sizing this unit, compare its 131.9 N output at 0.5 MPa against adjacent bores: the SDAD16 provides 86.4 N, and the SDAD25 offers 206.2 N. A safe working load is roughly 79 N (about 60% of the 0.5 MPa figure), translating to a vertical lift capacity of approximately 6.7 kg with a 2:1 safety margin.
This configuration features an 8 mm rod diameter, an M5x0.8 air port, and female M4x0.7 rod-end threads. Remember that a standard cylinder drifts when air is lost or the valve centers, as the fixed bumper only decelerates at stroke end and does not lock the load; utilize 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 SDAD20X35 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. The operating pressure range is 0.15-1.0 MPa.
Yes, the through-rod resists rotation and allows tooling on one end with a dog on the opposite end. However, this specific SKU lacks a piston magnet, so it cannot accept reed or electronic switches unless you select the -S magnet option.
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1-Year Warranty
Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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Most inquiries answered within 7-8 hours.
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