Airtac B01-SDAD Dedicated Cylinder B01-SDAD25X55S
The AirTAC Airtac B01-SDAD Dedicated Cylinder B01-SDAD25X55S is a genuine double-acting COMPACT cylinder with a piston rod out BOTH ends (Ø25mm bore, 55mm 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
- Stroke55 mm
- Port sizeM5×0.8
- Acting typeDouble acting, double rod
- Rod threadM5×0.8 (F) / M8×1.25 (B)
- CushionFixed NBR bumper (both ends)
About the Airtac B01-SDAD Dedicated Cylinder B01-SDAD25X55S
The AirTAC B01-SDAD25X55S is a compact double-acting cylinder featuring a piston rod extending from both ends. The "B01-" prefix designates this as an application-dedicated, customer-specified variant of the base SDAD25X55S, meaning it is mechanically identical to the standard model. Because a rod occupies both chambers, the annular area remains equal on extend and retract, yielding an identical push and pull force of 206.2 N at 0.5 MPa. This symmetric output is highly advantageous for balanced load manipulation.
The through-rod geometry inherently resists twisting, providing superior anti-rotation stability compared to single-rod units. Its short riveted body conserves axial mounting depth where space is tight. End-of-stroke deceleration relies on a fixed NBR bumper rather than an adjustable air cushion. Equipped with a built-in magnet (-S), this unit supports AirTAC reed or electronic solid-state switches for position sensing.
Airtac B01-SDAD Dedicated Cylinder B01-SDAD25X55S Technical Specifications
| Model | Airtac B01-SDAD Dedicated Cylinder B01-SDAD25X55S |
|---|---|
| Series | SDAD compact double-rod cylinder |
| Bore size | Ø25 mm |
| Stroke | 55 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 B01-SDAD Dedicated Cylinder B01-SDAD25X55S
| SDAD | Compact double-acting cylinder, rod out both ends. |
|---|---|
| 25 | Bore size in mm. |
| ×55 | 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 B01-SDAD Dedicated Cylinder B01-SDAD25X55S Is Used
Symmetric Transfer Arms
Drives pick-and-place arms requiring identical 206.2 N force on both extend and retract strokes to prevent load imbalance during rapid direction changes.
Anti-Twist Gauging
Uses the through-rod to mount a test probe on one end and a position dog on the other, ensuring the 10 mm rod resists rotational deflection during measurement.
Shallow Depth Ejector
Fits into tight machine frames using its compact riveted body to push parts evenly, relying on the fixed NBR bumper to absorb the end-of-stroke impact.
Is the Airtac B01-SDAD Dedicated Cylinder B01-SDAD25X55S the Right Cylinder?
When sizing this 25 mm bore actuator, evaluate the neighboring bores: stepping down to SDAD20 provides 131.9 N at 0.5 MPa, while stepping up to SDAD32 offers 345.6 N at 0.5 MPa. This B01-SDAD25X55S strikes a middle ground, yielding a safe working load of roughly 124 N (about 60% of the 206.2 N figure) and a vertical lift capacity of approximately 10.5 kg with a 2:1 safety margin. The dual-end rod allows mounting a tool on one side and a dog or switch on the opposite end simultaneously.
This model features a 55 mm stroke, a 10 mm rod diameter, and an M5x0.8 air port. Remember that a plain cylinder does not hold its load 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. The fixed NBR bumper only decelerates the stroke near the ends and acts as neither a lock nor a brake.
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 B01-SDAD Dedicated Cylinder B01-SDAD25X55S FAQ
The B01- prefix simply marks this as an application-dedicated variant of the SDAD25X55S; it does not alter any physical specs. The force is equal in both directions due to the double rod: 206.2 N at 0.5 MPa, 288.6 N at 0.7 MPa, and a theoretical max of 42 kgf at 1.0 MPa.
No, a plain double-acting cylinder drifts when air is lost or the valve is centered. The fixed NBR bumper only decelerates the stroke near the end and does not act as a brake. For load holding, you must use an external rod lock or a pilot-operated check valve.
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