Airtac BSAI Locking Clamp Cylinder BSAI50X100S
The AirTAC Airtac BSAI Locking Clamp Cylinder BSAI50X100S is a genuine double-acting ISO 15552 cylinder with a Ø50mm bore, 100mm 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
- Stroke100 mm
- Cylinder portG1/4
- TypeSingle rod (BSAI)
- Enclasp portG1/8
- Rod threadM16×1.5
- 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 BSAI50X100S
The AirTAC BSAI50X100-S is a double-acting ISO 15552 profile cylinder equipped with a spring-applied, air-released clamp-lock. It secures the carbon steel rod at any position along its 100 mm stroke, providing a static holding force of 1400 N. The integrated magnet (-S) supports CMSE reed and DMSE electronic sensors for precise position detection. A defining trait of this enclasp mechanism is that holding force and thrust are separate quantities; you must size the 1400 N clamp capacity against your static load, not the 982 N push thrust at 0.5 MPa.
The clamp operates via a third G1/8 enclasp port, distinct from the 1/4 cylinder ports, and requires 0.15-0.7 MPa to release. Remember that the variable air cushion only decelerates the piston near stroke end; the mechanical clamp is what actually holds the load. Furthermore, the lock engages only after the rod has stopped moving, meaning it cannot serve as a braking device for a moving rod.
Airtac BSAI Locking Clamp Cylinder BSAI50X100S Technical Specifications
| Model | Airtac BSAI Locking Clamp Cylinder BSAI50X100S |
|---|---|
| Series | BSAI ISO 15552 clamp-lock cylinder |
| Bore size | Ø50 mm |
| Stroke | 100 mm |
| Type | Single rod (BSAI), 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 | — |
Push/pull as tabulated. 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 BSAI Locking Clamp Cylinder BSAI50X100S Is Used
Vertical Load Holding
Maintains vertical payloads mid-stroke with 1400 N of holding force, preventing gravity-driven drops during air pressure loss.
Machining Position Lock
Freezes the rod at the exact machining coordinate required, ensuring the workpiece remains completely rigid during the cutting process.
Emergency Safety Stop
Provides a reliable mechanical hold anywhere in the travel range if the pneumatic air supply suddenly drops, adding a layer of operational safety.
Is the Airtac BSAI Locking Clamp Cylinder BSAI50X100S the Right Clamp-Lock?
Step down to a 40 mm bore if your application requires only 528 N pull thrust and 900 N holding capacity, or step up to a 63 mm bore for 1559 N thrust and 2200 N holding force. Choose this BSAI model over a SAIL cylinder when you need to lock at any intermediate position rather than just at the stroke end. If position holding is unnecessary, a plain SAI cylinder suffices. For safe operation, ensure the cylinder has stopped and air pressures are balanced before unlocking, or the rod may jump abruptly; safety-critical loads require an independent safety measure.
This BSAI50X100-S configuration features a single rod, 50 mm bore, 100 mm stroke, PT threaded ports, and a -S magnet. It accepts Basic, FA, FB, CA, CB, CR, LB, TC, TCM1, and TCM2 mounts. The 20 mm rod and M16x1.5 thread offer robust side-load resistance, though external guidance is recommended for unsupported loads.
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 BSAI50X100S FAQ
The BSAI50X100-S provides a static holding force of 1400 N. This bidirectional clamp locks the rod at any position along the stroke, but it only engages after the cylinder has stopped moving and cannot brake a moving rod.
The lock is spring-applied and air-released via a separate G1/8 enclasp port. To prevent the rod from jumping abruptly, the air pressures on both sides of the piston must be balanced and the cylinder must be completely stopped before unlocking.
Related AirTAC Lock & Standard Cylinders
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