Airtac BSAI Locking Clamp Cylinder BSAI63X50S
The AirTAC Airtac BSAI Locking Clamp Cylinder BSAI63X50S is a genuine double-acting ISO 15552 cylinder with a Ø63mm 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 2200 N.
- BoreØ63 mm
- Stroke50 mm
- Cylinder portG3/8
- 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 BSAI63X50S
The AirTAC BSAI63X50-S is a double-acting ISO 15552 profile cylinder with a built-in spring-applied, air-released clamp-lock. It provides a static holding force of 2200 N at any position along its 50 mm stroke. At 0.5 MPa, the cylinder generates 1559 N of thrust, but remember that holding force and thrust are separate quantities; you must size the clamp's 2200 N capacity against your static load, not the thrust. A third G1/8 enclasp port controls the unlock.
This unit includes a -S magnet for precise position sensing with CMSE reed or DMSE electronic switches. The variable air cushion only decelerates the piston near stroke ends; the mechanical clamp is what actually secures the load. The clamp locks only after the rod stops and cannot brake a moving rod.
Airtac BSAI Locking Clamp Cylinder BSAI63X50S Technical Specifications
| Model | Airtac BSAI Locking Clamp Cylinder BSAI63X50S |
|---|---|
| Series | BSAI ISO 15552 clamp-lock cylinder |
| Bore size | Ø63 mm |
| Stroke | 50 mm |
| Type | Single rod (BSAI), double acting |
| Cylinder port | G3/8 |
| Rod thread | M16×1.5 |
| Lock type | Spring-applied, air-released clamp (any position) |
|---|---|
| Static holding force | 2200 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 (Ø63 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 (Ø63mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1402 N |
| 0.7 MPa (max) | 2182 N | — |
Push/pull as tabulated. Rated to the 0.7 MPa operating maximum for this series. The clamp holding force (2200 N) is separate from cylinder thrust. Size with a margin.
Where the Airtac BSAI Locking Clamp Cylinder BSAI63X50S Is Used
Vertical Axis Mid-Stroke Hold
Secures a 63 mm bore lifting payload at any intermediate height without relying on continuous air pressure.
Power Loss Safety Enclasp
Engages the 2200 N spring-applied clamp instantly if air supply drops, preventing uncontrolled rod descent.
Machining Position Lock
Freezes the rod at a specific 50 mm travel point for secure workpiece inspection or light machining tasks.
Is the Airtac BSAI Locking Clamp Cylinder BSAI63X50S the Right Clamp-Lock?
Choose this 63 mm bore when a 50 mm stroke application requires intermediate pausing. If you need less force, the 50 mm bore offers 982 N thrust and 1400 N holding force. If your process only needs to hold at the stroke end, a plain SAI or SAIL cylinder suffices, but BSAI wins when you must enclasp the rod mid-travel. To release the lock safely, balance air pressure on both sides of the piston, or the rod may jump.
This single-rod configuration uses a 3/8 cylinder port and an M16x1.5 rod thread. It supports Basic, FA, FB, CA, CB, CR, LB, TC, TCM1, and TCM2 mounts. Because the stroke is short, the robust 20 mm rod handles side loads well without needing an external guide.
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 BSAI63X50S FAQ
The spring-applied clamp-lock provides a static holding force of 2200 N at any position along the 50 mm stroke. This holding capacity is independent of the 1559 N pneumatic thrust.
The lock releases only when air pressure is balanced on both sides of the piston after the rod has stopped. If pressures are unbalanced during release, the rod can move abruptly, so always ensure the cylinder is stopped before unlocking via the G1/8 port.
Related AirTAC Lock & Standard Cylinders
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