Airtac BSAI Locking Clamp Cylinder BSAI63X225S
The AirTAC Airtac BSAI Locking Clamp Cylinder BSAI63X225S is a genuine double-acting ISO 15552 cylinder with a Ø63mm bore, 225mm 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
- Stroke225 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 BSAI63X225S
The AirTAC BSAI63X225-S is a double-acting ISO 15552 profile cylinder featuring a carbon steel single rod and a spring-applied, air-released clamp-lock mechanism. It delivers 1559 N of thrust at 0.5 MPa and firmly grips the rod at any stroke position, providing a static holding force of 2200 N. Remember that this holding force is a distinct quantity from the cylinder's thrust; you must size the clamp capacity against your static load, not the push force.
The clamp engages bidirectionally to secure the load whether the rod was extending or retracting. It operates via a dedicated G1/8 enclasp port, which is entirely separate from the 3/8 cylinder ports. Furthermore, the variable air cushions only decelerate the piston near the stroke ends; the mechanical clamp is the sole device responsible for holding the load in place.
Airtac BSAI Locking Clamp Cylinder BSAI63X225S Technical Specifications
| Model | Airtac BSAI Locking Clamp Cylinder BSAI63X225S |
|---|---|
| Series | BSAI ISO 15552 clamp-lock cylinder |
| Bore size | Ø63 mm |
| Stroke | 225 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 BSAI63X225S Is Used
Vertical Axis Hold
Secures a 225 mm vertical lift at any intermediate height during power loss, preventing gravity-driven drops with 2200 N of holding force.
Machining Position Lock
Clamps the carbon steel rod mid-stroke to rigidly hold a workpiece for machining or inspection without relying on continuous air pressure.
Emergency Safety Stop
Provides a bidirectional static hold anywhere along the travel to freeze a payload safely in place during an unexpected compressed air failure.
Is the Airtac BSAI Locking Clamp Cylinder BSAI63X225S the Right Clamp-Lock?
Choose this 63 mm bore when a 50 mm bore (982 N thrust, 1400 N hold) lacks sufficient load capacity, or step up to an 80 mm bore (2513 N thrust, 3600 N hold) for heavier dies. Select this BSAI model over a SAIL cylinder when you need to lock at any intermediate position rather than just at the stroke end. If no locking is required, a plain SAI cylinder suffices. This unit includes a -S magnet for CMSE (reed) and DMSE (electronic) sensors, PT port threads, and accepts Basic, FA, FB, CA, CB, CR, LB, TC, TCM1, and TCM2 mounts.
For safe operation, note that the clamp locks only after the cylinder has stopped; it cannot brake a moving rod. You must balance the air pressure on both sides of the piston to unlock it, or the rod may jump abruptly. For human-safety-critical applications, always provide an additional independent safety measure.
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 BSAI63X225S FAQ
The spring-applied clamp provides a static holding force of 2200 N. It engages at any position along the 225 mm stroke and holds bidirectionally, but only after the rod has come to a complete stop.
You must apply air to the G1/8 enclasp port to release the clamp, but only after balancing the air pressure on both sides of the piston. If the pressures are unbalanced when unlocked, the rod can move abruptly. An independent safety measure is required for human-life loads.
Related AirTAC Lock & Standard Cylinders
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