Airtac SDAD Double Rod Slim Cylinder SDAD40X25S
The AirTAC Airtac SDAD Double Rod Slim Cylinder SDAD40X25S is a genuine double-acting COMPACT cylinder with a piston rod out BOTH ends (Ø40mm bore, 25mm 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
- Stroke25 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 SDAD40X25S
The AirTAC SDAD40X25S is a compact double-acting cylinder featuring a through-rod that exits both ends of the riveted body. Because the rod occupies both chambers, the annular area is identical on extend and retract, yielding an equal push and pull force of 527.8 N at 0.5 MPa. This symmetry is ideal for driving loads that require consistent momentum in both directions.
The integrated -S piston magnet enables position detection via AirTAC reed or electronic switches fitted directly into the body grooves. End-of-stroke deceleration relies on a fixed NBR bumper rather than an adjustable air cushion. With a 16 mm rod diameter and a short 25 mm stroke, this thin-profile design saves axial mounting depth in tight machinery.
Airtac SDAD Double Rod Slim Cylinder SDAD40X25S Technical Specifications
| Model | Airtac SDAD Double Rod Slim Cylinder SDAD40X25S |
|---|---|
| Series | SDAD compact double-rod cylinder |
| Bore size | Ø40 mm |
| Stroke | 25 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 SDAD40X25S
| SDAD | Compact double-acting cylinder, rod out both ends. |
|---|---|
| 40 | Bore size in mm. |
| ×25 | 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 SDAD40X25S Is Used
Symmetric Gripper Actuation
Drives an opposing jaw set with identical 527.8 N clamping force in both directions, ensuring centered part holding without rotational twist.
Dual-End Transfer Pusher
Mounts a pusher plate on one rod end and a magnetic dog on the other, using the built-in magnet to confirm stroke completion while moving components.
Short-Stroke Lifter
Lifts a 26.9 kg vertical payload through a 25 mm travel distance, relying on the fixed NBR bumper to absorb shock at the end of the compact motion.
Is the Airtac SDAD Double Rod Slim Cylinder SDAD40X25S the Right Cylinder?
When sizing this 40 mm bore unit, consider the neighbouring SDAD32 at 345.6 N and the SDAD50 at 824.7 N, both rated at 0.5 MPa. The through-rod geometry resists twisting and allows you to mount a tool on one end while a dog triggers a switch on the opposite side.
This configuration includes the S magnet code for sensing and uses female M8x1.25 rod-end threads with a PT1/8 air port. Note that a standard cylinder does not hold position if air pressure drops or the valve centers; the piston will drift. For load-holding without live pressure, install an external rod lock or a 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 SDAD40X25S FAQ
The double-rod design provides equal force 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 extends from both sides, allowing you to drive a tool on one end and mount a sensing dog on the other. The built-in magnet works with AirTAC reed or electronic switches for position feedback.
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Standard models are processed and dispatched in 3-5 business days.
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