Airtac SDAD Double Rod Slim Cylinder SDAD40X120S
The AirTAC Airtac SDAD Double Rod Slim Cylinder SDAD40X120S is a genuine double-acting COMPACT cylinder with a piston rod out BOTH ends (Ø40mm bore, 120mm 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
- Stroke120 mm
- Port sizePT1/8
- Acting typeDouble acting, double rod
- Rod threadM8×1.25 (F) / M14×1.5 (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 SDAD40X120S
The AirTAC SDAD40X120S 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, giving exactly 527.8 N of force at 0.5 MPa on both extend and retract strokes. This symmetry is ideal for driving loads that require consistent push and pull dynamics.
The 40 mm bore uses a 16 mm piston rod and a PT1/8 port. A built-in magnet (-S) enables position feedback via reed or electronic switches mounted in the body grooves. End-of-stroke deceleration relies on a fixed NBR bumper, which absorbs shock but is not an adjustable air cushion. The short body profile saves axial depth where standard cylinders cannot fit.
Airtac SDAD Double Rod Slim Cylinder SDAD40X120S Technical Specifications
| Model | Airtac SDAD Double Rod Slim Cylinder SDAD40X120S |
|---|---|
| Series | SDAD compact double-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 120 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 SDAD40X120S
| SDAD | Compact double-acting cylinder, rod out both ends. |
|---|---|
| 40 | Bore size in mm. |
| ×120 | 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 SDAD40X120S Is Used
Symmetric Transfer
Drives a pick-and-place head with equal 527.8 N push and pull force, ensuring stable part transfer without twisting.
Dual-End Gauging
Mounts a machining fixture on one rod end and a position dog on the opposite end to trigger a reed switch.
Is the Airtac SDAD Double Rod Slim Cylinder SDAD40X120S the Right Cylinder?
When sizing this model, compare its 527.8 N output at 0.5 MPa against adjacent bores: the SDAD32 yields 345.6 N, while the SDAD50 provides 824.7 N. The through-rod geometry resists twisting and allows mounting a tool on one end with a dog or switch on the opposite end.
This configuration includes the -S magnet for sensing and female M8x1.25 rod-end threads on both sides. Remember that a plain cylinder drifts when air is lost or the valve centers; the fixed bumper only decelerates near the 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 SDAD40X120S FAQ
Because the double-rod design creates equal annular areas, force is identical in both directions: 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.
Yes, the through-rod resists rotation and allows you to drive a tool on one end while mounting a dog on the other. The built-in -S magnet works with AirTAC reed or electronic switches for position feedback.
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Related AirTAC SDAD Cylinders
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