Airtac SDAD Double Rod Slim Cylinder SDAD25X40H
The AirTAC Airtac SDAD Double Rod Slim Cylinder SDAD25X40H is a genuine double-acting COMPACT cylinder with a piston rod out BOTH ends (Ø25mm bore, 40mm 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.
- BoreØ25 mm
- Stroke40 mm
- Port sizeM5×0.8
- Acting typeDouble acting, double rod
- Rod threadM5×0.8 (F) / M8×1.25 (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 SDAD25X40H
The AirTAC SDAD25X40H is a double-acting, double-rod compact cylinder featuring a 25mm bore and 40mm stroke. Because the piston rod exits both ends of the riveted body, the annular area is identical in each chamber. This geometry ensures push force equals pull force, delivering exactly 206.2 N at 0.5 MPa in both directions. The through-rod design inherently resists twisting, letting you mount a tool on one end and a dog on the opposite side simultaneously.
This specific H-suffix variant uses a fluororubber (FKM) seal for enhanced thermal and oil resistance within the standard -20 to +70 C operating range. The short body profile saves axial mounting depth where larger profile cylinders cannot fit. End-of-stroke deceleration is handled by a fixed NBR bumper at each end. Since this SKU lacks the S magnet code, it cannot accept magnetic switches.
Airtac SDAD Double Rod Slim Cylinder SDAD25X40H Technical Specifications
| Model | Airtac SDAD Double Rod Slim Cylinder SDAD25X40H |
|---|---|
| Series | SDAD compact double-rod cylinder |
| Bore size | Ø25 mm |
| Stroke | 40 mm |
| Acting type | Double acting, rod both ends |
| Port size | M5×0.8 |
| Rod end thread | M5×0.8 female / M8×1.25 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 (Ø25mm)
| Pressure | Force (both directions) |
|---|---|
| 0.5 MPa | 206 N |
| 0.7 MPa | 289 N |
| Max (@1.0 MPa) | 42 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 SDAD25X40H
| SDAD | Compact double-acting cylinder, rod out both ends. |
|---|---|
| 25 | Bore size in mm. |
| ×40 | 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 SDAD25X40H Is Used
Symmetric Transfer Gripper
Drives a dual-jaw gripper where the 206.2 N equal push and pull force ensures balanced clamping pressure on delicate electronics without twisting the assembly.
Heat-Resistant Carton Flap Folder
Utilizes the FKM seal to withstand warm packaging environments while folding carton flaps simultaneously from both sides using dual-end tooling.
Is the Airtac SDAD Double Rod Slim Cylinder SDAD25X40H the Right Cylinder?
When sizing this unit, consider the neighbouring bores: the SDAD20 provides 131.9 N at 0.5 MPa, while the SDAD32 offers 345.6 N. This makes it ideal for moderate symmetric tasks.
The dual-end through-rod prevents rotation and supports dual-end tooling, but remember that a plain cylinder does not hold position if air pressure drops or the valve is centred—the piston will drift. For load holding without live pressure, install an external rod lock or pilot-operated check valve. This configuration features a 10mm rod, an M5x0.8 port, female M5x0.8 rod-end threads, and operates at 30-500 mm/s.
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 SDAD25X40H FAQ
The double-rod design provides equal force in both directions: 206.2 N at 0.5 MPa, 288.6 N at 0.7 MPa, and a theoretical maximum of 42 kgf at 1.0 MPa. The maximum operating pressure is 1.0 MPa, with a proof pressure of 1.5 MPa.
No, this specific SKU does not include a piston magnet (lacking the S option), so it cannot accept magnetic reed or electronic switches. You must choose the -S variant for sensing, or mount an external dog on the through-rod to trigger a remote sensor.
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