Airtac SDAD Double Rod Slim Cylinder SDAD40X120
The AirTAC Airtac SDAD Double Rod Slim Cylinder SDAD40X120 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 SDAD40X120
The AirTAC SDAD40X120 is a double-acting compact cylinder featuring a 40 mm bore and a 120 mm stroke. Because the piston rod protrudes from both ends, the annular area remains identical in both chambers. This geometry ensures push force equals pull force, delivering exactly 527.8 N in each direction at 0.5 MPa. The riveted body design minimizes axial mounting depth, fitting easily into tight machinery layouts where longer profile cylinders fail.
A 16 mm diameter rod exits both ends with a female M8x1.25 thread, inherently resisting rotational twist during operation. End-of-stroke deceleration relies on a fixed NBR bumper rather than an adjustable air cushion. This specific SKU lacks a piston magnet, so position sensing is not supported without switching to an -S variant.
Airtac SDAD Double Rod Slim Cylinder SDAD40X120 Technical Specifications
| Model | Airtac SDAD Double Rod Slim Cylinder SDAD40X120 |
|---|---|
| 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 SDAD40X120
| 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 SDAD40X120 Is Used
Precision Guiding Jigs
The dual-end 16 mm rods resist twisting, keeping precision guiding jigs perfectly aligned while pushing and pulling loads with 527.8 N of equal force.
Symmetric Transfer Arms
Drive a tool on one end and mount a physical dog on the opposite end for mechanical syncing, leveraging the 120 mm stroke for symmetric transfer arms.
Is the Airtac SDAD Double Rod Slim Cylinder SDAD40X120 the Right Cylinder?
When sizing this 40 mm bore model, consider the neighboring standard options. Dropping down to the SDAD32 yields 345.6 N at 0.5 MPa, whereas stepping up to the SDAD50 provides 824.7 N at 0.5 MPa.
The through-rod design allows you to mount a work tool on one end and a dog or switch on the opposite end simultaneously. Note that a plain SDAD does not hold position if air pressure drops or the valve centers; the piston will drift. For load holding without live pressure, integrate an external rod lock or a pilot-operated check valve. This configuration uses a PT1/8 port, female M8x1.25 rod threads, and operates effectively across a 30-500 mm/s speed range.
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 SDAD40X120 FAQ
Because the rod occupies both chambers, the push and pull forces are identical. 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 in both directions.
Yes, the through-rod design allows mounting a tool on one end and a dog or secondary mechanism on the other. This configuration also resists rotation, but note this specific SKU lacks a magnet for electronic or reed switches.
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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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Related AirTAC SDAD Cylinders
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