Airtac SDAD Double Rod Slim Cylinder SDAD20X20BH
The AirTAC SDAD Double Rod Slim Cylinder SDAD20X20BH is a genuine double-acting COMPACT cylinder with a piston rod out BOTH ends (Ø20mm bore, 20mm 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
- Stroke20 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 SDAD20X20BH
The AirTAC SDAD20X20BH is a double-acting compact cylinder featuring a twin-rod design where one piston shaft exits both ends of the riveted body. Because a rod occupies each chamber, the annular area remains identical in both directions, yielding exactly 131.9 N of push and pull force at 0.5 MPa. This symmetry is highly advantageous for driving loads that require consistent kinetic energy regardless of travel direction.
This specific configuration includes male M6x1.0 threaded rod ends on both sides for direct tool mounting, alongside a fluororubber (FKM) seal variant for enhanced thermal and oil resistance. The 8 mm through-rod inherently resists twisting, letting you drive a mechanism on one end while using the opposite side for a mechanical dog. End-of-stroke deceleration is handled by fixed NBR bumpers rather than adjustable air cushions.
Airtac SDAD Double Rod Slim Cylinder SDAD20X20BH Technical Specifications
| Model | Airtac SDAD Double Rod Slim Cylinder SDAD20X20BH |
|---|---|
| Series | SDAD compact double-rod cylinder |
| Bore size | Ø20 mm |
| Stroke | 20 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 SDAD20X20BH
| SDAD | Compact double-acting cylinder, rod out both ends. |
|---|---|
| 20 | Bore size in mm. |
| ×20 | 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 SDAD20X20BH Is Used
Symmetric Guider Drive
Drives a linear guider with equal 131.9 N force in both directions, preventing binding on light-duty 20 mm tooling platforms.
Dual-End Transfer
Uses the male M6 rod ends on both sides to push a part on the front stroke while actuating a release latch on the rear.
FKM Sealed Test Rig
Suits heated lab automation up to 70 C where the fluororubber seal resists minor oil ingress from nearby components better than standard rubber.
Is the Airtac SDAD Double Rod Slim Cylinder SDAD20X20BH the Right Cylinder?
When sizing this 20 mm bore unit, evaluate the neighbouring capacities: stepping down to the SDAD16 yields 86.4 N at 0.5 MPa, while moving up to the SDAD25 provides 206.2 N. The through-rod geometry prevents rotation, but remember this cylinder does not hold position on air loss; the piston drifts unless you fit an external pilot-operated check valve or rod lock. This SKU features an M5x0.8 port, a 20 mm stroke, male M6x1.0 rods, and FKM seals, but lacks a piston magnet for switch sensing.
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 SDAD20X20BH FAQ
The push and pull forces are identical due to the double-rod design. It generates 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 maximum operating pressure is 1.0 MPa.
No, this specific SKU lacks the built-in piston magnet, so it cannot trigger reed or electronic switches. You would need the SDAD20X20BHS variant to enable position sensing, though you can still mount a physical dog on the opposite rod end.
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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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