Airtac BSAI Locking Clamp Cylinder BSAI100X80S
The AirTAC Airtac BSAI Locking Clamp Cylinder BSAI100X80S is a genuine double-acting ISO 15552 cylinder with a Ø100mm bore, 80mm 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 5500 N.
- BoreØ100 mm
- Stroke80 mm
- Cylinder portG1/2
- TypeSingle rod (BSAI)
- Enclasp portG1/8
- Rod threadM20×1.5
About the Airtac BSAI Locking Clamp Cylinder BSAI100X80S
The AirTAC BSAI100X80-S is a double-acting ISO 15552 profile cylinder featuring a built-in spring-applied, air-released clamp-lock. It provides a robust static holding force of 5500 N, gripping the single carbon steel rod to secure the load at any point along its 80 mm travel. Delivering 3927 N push thrust at 0.5 MPa (5497 N at the 0.7 MPa practical maximum), it is engineered for heavy-duty positioning. Remember that this 5500 N holding capacity is a distinct metric from the cylinder's thrust; you must size the clamp force against the static load weight, not the pneumatic push force.
This unit includes a -S magnet for precise position sensing via AirTAC CMSE reed or DMSE electronic solid-state switches. The enclasp mechanism relies on a dedicated G1/8 unlock port, requiring 0.15-0.7 MPa to release. It is critical to note that the variable air cushions at the stroke ends only decelerate the piston before stopping; the mechanical clamp is the sole device that holds the load. Furthermore, the clamp locks only after the rod has completely stopped and cannot function as a dynamic brake.
Airtac BSAI Locking Clamp Cylinder BSAI100X80S Technical Specifications
| Model | Airtac BSAI Locking Clamp Cylinder BSAI100X80S |
|---|---|
| Series | BSAI ISO 15552 clamp-lock cylinder |
| Bore size | Ø100 mm |
| Stroke | 80 mm |
| Type | Single rod (BSAI), double acting |
| Cylinder port | G1/2 |
| Rod thread | M20×1.5 |
| Lock type | Spring-applied, air-released clamp (any position) |
|---|---|
| Static holding force | 5500 N |
| Enclasp / unlock port | G1/8 |
| Operating pressure | 0.15 – 0.7 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 500 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 (Ø100 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 (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa (max) | 5498 N | — |
Push/pull as tabulated. Rated to the 0.7 MPa operating maximum for this series. The clamp holding force (5500 N) is separate from cylinder thrust. Size with a margin.
Where the Airtac BSAI Locking Clamp Cylinder BSAI100X80S Is Used
Vertical Axis Hold
Secures heavy vertical loads at any point in the 80 mm travel, preventing drops during power loss.
Machining Position Lock
Clamps the rod with 5500 N to keep the workpiece completely stationary against cutting forces.
Emergency Safety Stop
Holds the load securely mid-stroke if air pressure drops, acting as a fail-safe until pressure is restored.
Is the Airtac BSAI Locking Clamp Cylinder BSAI100X80S the Right Clamp-Lock?
Select this 100 mm bore model when a mid-stroke hold is essential, stepping up from a BSAI80X80 which offers 2513 N thrust and 3600 N holding capacity. Choose this BSAI clamp-lock over a SAIL model when the application requires holding at any position rather than just at the stroke end. If no mid-stroke hold is needed, a plain SAI cylinder suffices. For safe operation, unlock only after balancing air pressures on both sides of the piston to prevent the rod from jumping abruptly. Because human safety cannot rely solely on the clamp, an independent safety measure is required for critical loads.
This replacement match features a single rod, 100 mm bore, 80 mm stroke, and PT tapered threads (1/2 inch cylinder port plus the G1/8 enclasp port). It supports Basic, FA, FB, CA, CB, CR, LB, TC, TCM1, and TCM2 mounts. The M20x1.5 rod thread and 25 mm rod diameter provide excellent rigidity and side-load resistance for heavy tooling.
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 BSAI Locking Clamp Cylinder BSAI100X80S FAQ
The clamp-lock provides a static holding force of 5500 N. It grips the rod bidirectionally at any position along the stroke to hold the load securely without requiring live air pressure.
The spring-applied clamp is released via the G1/8 enclasp port using 0.15-0.7 MPa air. You must balance pressures on both sides of the piston before unlocking, or the rod may jump. The clamp locks only after the rod stops and cannot brake a moving load.
Related AirTAC Lock & Standard Cylinders
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