Airtac BSAID Clamp Cylinder BSAID80X125S
The AirTAC Airtac BSAID Clamp Cylinder BSAID80X125S is a genuine double-acting ISO 15552 cylinder with a Ø80mm bore, 125mm 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 3600 N.
- BoreØ80 mm
- Stroke125 mm
- Cylinder portG3/8
- TypeDouble rod (BSAID)
- Enclasp portG1/8
- Rod threadM20×1.5
About the Airtac BSAID Clamp Cylinder BSAID80X125S
The AirTAC BSAID80X125-S is a double-acting ISO 15552 profile cylinder featuring a double-rod configuration and a spring-applied, air-released clamp-lock. It provides a static holding force of 3600 N, gripping the rod securely at any position along its 125 mm travel. Because it is a double-rod design, the thrust is equal in both directions at 2268 N (0.5 MPa), and the second rod allows you to mount a workpiece on one end while fitting a guide, counterweight, or position flag on the opposite end for dual-side anti-rotation.
It is critical to distinguish this 3600 N static holding force from the 2268 N cylinder thrust: you must size the clamp against the static load, not the pneumatic push force. The lock engages via a separate G1/8 enclasp port, functioning independently of the variable air cushions which only decelerate the piston near stroke ends. Furthermore, the clamp locks only after the rod has stopped, meaning it cannot brake a moving load.
Airtac BSAID Clamp Cylinder BSAID80X125S Technical Specifications
| Model | Airtac BSAID Clamp Cylinder BSAID80X125S |
|---|---|
| Series | BSAI ISO 15552 clamp-lock cylinder |
| Bore size | Ø80 mm |
| Stroke | 125 mm |
| Type | Double rod (BSAID), double acting |
| Cylinder port | G3/8 |
| Rod thread | M20×1.5 |
| Lock type | Spring-applied, air-released clamp (any position) |
|---|---|
| Static holding force | 3600 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 (Ø80 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 (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa (max) | 3519 N | — |
Equal force both directions (double rod). Rated to the 0.7 MPa operating maximum for this series. The clamp holding force (3600 N) is separate from cylinder thrust. Size with a margin.
Where the Airtac BSAID Clamp Cylinder BSAID80X125S Is Used
Mid-Stroke Machining Hold
Clamps a heavy workpiece at an exact intermediate point on a vertical axis, using the second rod for an external guide to resist cutting torque.
Balanced Lift Station
Lifts and holds payloads securely anywhere in the 125 mm travel, using equal thrust both directions to raise and lower smoothly without drift.
Power Loss Safety Stop
Engages the 3600 N spring-applied clamp instantly if air pressure drops, freezing the load in place to prevent falling during an outage.
Is the Airtac BSAID Clamp Cylinder BSAID80X125S the Right Clamp-Lock?
Choose this double-rod clamp-lock when an application requires equal force both ways and intermediate holding along the stroke. If you only need to hold at the stroke end, a SAIL cylinder suffices, but BSAID wins when you must stop and clamp anywhere. If your load requires less holding, stepping down to a 63 mm bore provides 2200 N holding force and 1402 N pull thrust. For safety, always unlock the clamp only after balancing the air pressures on both sides of the piston; otherwise, the rod may jump abruptly. Human-safety critical loads require an additional independent safety measure.
This BSAID80X125-S includes a -S magnet for precise sensing with CMSE (reed) or DMSE (electronic) switches. It features PT tapered ports (3/8 cylinder, G1/8 enclasp) and a robust 25 mm rod with an M20x1.5 thread, which carries high side loads well. The correct mounting set for this double-rod version omits FB, CA, CB, and CR, utilizing Basic, FA, LB, TC, TCM1, or TCM2 brackets.
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 BSAID80X125S FAQ
It uses a spring-applied, air-released mechanism to grip the rod at any position with a 3600 N static holding force. It is bidirectional and holds the load securely without requiring live air pressure.
No, the clamp locks only after the cylinder has stopped; it cannot decelerate a moving load. Additionally, you must balance the air pressure on both sides before unlocking, or the rod may jump unexpectedly.
Related AirTAC Lock & Standard Cylinders
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