Airtac BSAID Clamp Cylinder BSAID50X25
The AirTAC Airtac BSAID Clamp Cylinder BSAID50X25 is a genuine double-acting ISO 15552 cylinder with a Ø50mm bore, 25mm stroke and a spring-applied, air-released clamp-lock that holds the rod at ANY position along its travel — with a static holding force of 1400 N.
- BoreØ50 mm
- Stroke25 mm
- Cylinder portG1/4
- TypeDouble rod (BSAID)
- Enclasp portG1/8
- Rod threadM16×1.5
About the Airtac BSAID Clamp Cylinder BSAID50X25
The AirTAC BSAID50X25 is a double-acting ISO 15552 profile cylinder featuring a built-in clamp-lock mechanism and a double-rod design. A spring-applied, air-released gripper engages the piston rod to hold the load at any position along its 25 mm stroke, delivering a static holding force of 1400 N. Because it is a double-rod actuator, the thrust is equal in both directions at 825 N (0.5 MPa). Buyers must distinguish this holding force from thrust: the 1400 N clamp rating secures the static load, while the 825 N figure dictates the cylinder's driving capability.
Having a rod extending from both ends allows you to mount a workpiece on one side and a guide or counterweight on the other, providing dual-side guidance and anti-rotation. The clamp operates via a third G1/8 enclasp port and requires balanced air pressure (0.15-0.7 MPa) to unlock safely. Remember that the variable air cushion only decelerates the piston near stroke end; it is the mechanical clamp that actually holds the load.
Airtac BSAID Clamp Cylinder BSAID50X25 Technical Specifications
| Model | Airtac BSAID Clamp Cylinder BSAID50X25 |
|---|---|
| Series | BSAI ISO 15552 clamp-lock cylinder |
| Bore size | Ø50 mm |
| Stroke | 25 mm |
| Type | Double rod (BSAID), double acting |
| Cylinder port | G1/4 |
| Rod thread | M16×1.5 |
| Lock type | Spring-applied, air-released clamp (any position) |
|---|---|
| Static holding force | 1400 N |
| Enclasp / unlock port | G1/8 |
| Operating pressure | 0.15 – 0.7 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Max stroke | Up to 1000 mm |
Specifications follow the official AirTAC BSAI datasheet (ISO 15552). Operating pressure is 0.15–0.7 MPa (lower than a plain SAI). Port options: PT / G.
How the Clamp-Lock Holds
static holding force (Ø50 mm)
A spring-applied gripper clamps the rod and holds the load at any position in the stroke — not just at the stroke end (that is a SAIL) — and it is bidirectional: it holds whether the rod was extending or retracting.
Theoretical Output Force (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa (max) | 1374 N | — |
Equal force both directions (double rod). Rated to the 0.7 MPa operating maximum for this series. The clamp holding force (1400 N) is separate from cylinder thrust. Size with a margin.
Where the Airtac BSAID Clamp Cylinder BSAID50X25 Is Used
Vertical Mid-Stroke Hold
Maintains a 1400 N vertical load at any point in the 25 mm travel without relying on continuous air pressure.
Power Loss Safety
Spring-applied clamp secures the dual-sided rod instantly during an air or power failure, preventing uncommanded drops.
Machining Position Lock
Locks the workpiece rigidly in place for a machining or inspection process, using the second rod end for a position flag.
Is the Airtac BSAID Clamp Cylinder BSAID50X25 the Right Clamp-Lock?
Choose this 50 mm bore model when an application requires equal force both ways and mid-stroke holding, stepping up from a 40 mm bore (528 N thrust, 900 N hold) if you need greater load capacity. A plain SAID cylinder suffices if you only need dual-side guidance without a clamping function, while a SAIL locks at stroke ends only. This BSAID50X25 locks only after the rod has stopped moving—it cannot brake a moving load—and it must be unlocked with balanced pressures to prevent the rod from jumping abruptly. Safety-critical loads require an additional independent measure.
As a replacement match, confirm the double-rod configuration, 50 mm bore, 25 mm stroke, and PT port threads. The mounting set for double-rod models omits FB, CA, CB, and CR, accepting only Basic, FA, LB, TC, TCM1, and TCM2. Without a -S magnet, this unit cannot host CMSE or DMSE sensors.
Quick checklist
- ✓ Hold needed at any position?
- ✓ Or stroke-end only → use SAIL
- ✓ Holding force ≥ your load
- ✓ Balanced-pressure unlock circuit
- ✓ Extra safety measure for people
Airtac BSAID Clamp Cylinder BSAID50X25 FAQ
The clamp-lock provides a static holding force of 1400 N. It locks the rod at any position bidirectionally, but only engages after the cylinder has stopped moving.
The clamp is released via a third G1/8 enclasp port, but only when the air pressures on both sides of the piston are balanced. Otherwise, the rod can jump abruptly upon release.
Related AirTAC Lock & Standard Cylinders
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