Airtac BSAI Locking Clamp Cylinder BSAI100X50S
The AirTAC Airtac BSAI Locking Clamp Cylinder BSAI100X50S is a genuine double-acting ISO 15552 cylinder with a Ø100mm bore, 50mm 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
- Stroke50 mm
- Cylinder portG1/2
- TypeSingle rod (BSAI)
- Enclasp portG1/8
- Rod threadM20×1.5
- 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 BSAI Locking Clamp Cylinder BSAI100X50S
The AirTAC BSAI100X50-S is a double-acting ISO 15552 profile cylinder equipped with a spring-applied, air-released clamp-lock mechanism. A defining feature of this series is its ability to lock the carbon steel piston rod at ANY position along its 50 mm stroke, providing a robust static holding force of 5500 N. Because it is a bidirectional enclasp, it secures the load effectively whether the rod was extending or retracting. Operating at 0.15-0.7 MPa, it generates a practical maximum thrust of 5497 N.
It is crucial to distinguish between the cylinder thrust and the clamp holding force: the 5500 N rating defines the static load the brake can hold, not the pneumatic drive power. The clamp utilizes a dedicated G1/8 enclasp port, separate from the 1/2 cylinder ports, and requires balanced air pressure to unlock safely. Furthermore, the variable air cushions only decelerate the piston near stroke ends; the clamp is the sole device responsible for maintaining the hold.
Airtac BSAI Locking Clamp Cylinder BSAI100X50S Technical Specifications
| Model | Airtac BSAI Locking Clamp Cylinder BSAI100X50S |
|---|---|
| Series | BSAI ISO 15552 clamp-lock cylinder |
| Bore size | Ø100 mm |
| Stroke | 50 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 BSAI100X50S Is Used
Vertical Axis Mid-Stroke Hold
Secures heavy vertical loads at any point in the 50 mm travel, preventing drops during power loss without relying on end-stop cushions.
Machining Position Lock
Clamps the carbon steel rod rigidly with 5500 N of force to maintain exact workpiece positioning against machining vibration.
Emergency Safety Hold
Acts as a fail-safe brake that engages automatically upon air loss, holding the load securely until pressure is restored and balanced.
Is the Airtac BSAI Locking Clamp Cylinder BSAI100X50S the Right Clamp-Lock?
Choose this 100 mm bore when an application demands high load holding mid-stroke, stepping up from a BSAI80 which offers 3600 N holding force and 3518 N thrust. If locking is only required at the stroke ends, a plain SAI or SAIL cylinder suffices, but the BSAI is necessary for intermediate positioning. Remember that the clamp locks only after the rod has stopped; it cannot brake a moving load. Additionally, it must be unlocked with balanced piston pressures to prevent the rod from jumping abruptly, meaning human-safety applications require independent external measures.
As a replacement match, ensure single-rod configuration, 100 mm bore, 50 mm stroke, and PT port threads. The correct mounting set is Basic, FA, FB, CA, CB, CR, LB, TC, TCM1, or TCM2. The -S suffix indicates the integrated magnet works seamlessly with AirTAC CMSE reed and DMSE electronic sensors. The robust M20x1.5 rod thread handles significant side loads, though external guidance is always recommended for optimal longevity.
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 BSAI100X50S FAQ
The integrated enclasp mechanism provides a static holding force of 5500 N. This bidirectional clamp can secure the rod at any position along the 50 mm stroke, but it only engages after the cylinder has stopped moving.
The clamp is spring-applied and air-released via a dedicated G1/8 port. To prevent the rod from jumping, it must only be unlocked when the air pressures on both sides of the piston are balanced and the rod has stopped.
Related AirTAC Lock & Standard Cylinders
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