Airtac SDAD Double Rod Slim Cylinder SDAD40X120B
The AirTAC Airtac SDAD Double Rod Slim Cylinder SDAD40X120B 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 SDAD40X120B
The AirTAC SDAD40X120B is a double-acting, double-rod 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 on extend and retract, delivering an equal push and pull force of 527.8 N at 0.5 MPa. This symmetry prevents twisting moments and provides stable motion for rigidly guided loads.
This specific SKU includes male M14x1.5 thread rods on both ends and lacks a piston magnet. The short riveted body minimizes axial footprint, while a fixed NBR bumper decelerates the piston at stroke ends. Operating pressure spans 0.15 to 1.0 MPa, with a speed range of 30-500 mm/s.
Airtac SDAD Double Rod Slim Cylinder SDAD40X120B Technical Specifications
| Model | Airtac SDAD Double Rod Slim Cylinder SDAD40X120B |
|---|---|
| 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 SDAD40X120B
| 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 SDAD40X120B Is Used
Symmetric Ejector Mechanism
Drives a part ejector where the equal 527.8 N push and pull force ensures consistent ejection and retraction without momentum drift.
Dual-End Transfer Arm
Uses the male M14x1.5 rods on both ends to mount a transfer jaw on one side and a mechanical dog on the other for cam tracking.
Compact Gripper Actuator
Fits into shallow machine frames using its short riveted body to provide anti-rotation linear motion for heavy workholding.
Is the Airtac SDAD Double Rod Slim Cylinder SDAD40X120B the Right Cylinder?
When sizing this 40 mm bore model, consider the neighboring SDAD32 at 345.6 N and the SDAD50 at 824.7 N, both rated at 0.5 MPa. The dual-end male M14x1.5 rods allow mounting a tool on one side and a dog on the opposite end simultaneously.
Note that this variant has no -S magnet, meaning it cannot accept reed or electronic switches. A plain cylinder will not hold a load if air pressure drops or the valve centers; the piston drifts. For load holding without live pressure, integrate an external rod lock or a pilot-operated check valve. The fixed NBR bumper only absorbs end-of-stroke shock.
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 SDAD40X120B FAQ
The push and pull forces are equal because of the double-rod design. 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. The maximum operating pressure is 1.0 MPa.
No, this specific SKU does not include a piston magnet. You must select an SDAD40X120BS variant to use AirTAC reed or electronic switches in the body sensor grooves. The through-rod design still allows mounting a physical dog on the opposite end for external sensing.
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