Airtac BSAI Locking Clamp Cylinder BSAI63X450S
The AirTAC Airtac BSAI Locking Clamp Cylinder BSAI63X450S is a genuine double-acting ISO 15552 cylinder with a Ø63mm bore, 450mm 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
- Stroke450 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 BSAI63X450S
The AirTAC BSAI63X450-S is a double-acting ISO 15552 profile cylinder featuring a built-in spring-applied, air-released clamp-lock. It secures the piston rod at any position along its 450mm stroke, delivering a static holding force of 2200 N. This bidirectional enclasp mechanism operates via a dedicated G1/8 third port, requiring 0.15-0.7 MPa to release. The base cylinder generates 1559 N push thrust at 0.5 MPa, scaling to 2182 N at 0.7 MPa. Remember that holding force and thrust are distinct: you must size the 2200 N clamp capacity against your static load, independent of the 2182 N dynamic push force. The variable air cushion only decelerates the piston near stroke ends; it does not hold the load. The integrated -S magnet pairs directly with AirTAC CMSE reed and DMSE solid-state sensors for position tracking.
Unlike a stroke-end-only SAIL cylinder, this unit locks wherever the rod stops. However, it cannot brake a moving rod and only engages after motion ceases. Unlocking requires balanced air pressure on both sides of the piston, preventing abrupt rod jumps upon release. For safety-critical applications, an additional independent mechanical measure is required.
Airtac BSAI Locking Clamp Cylinder BSAI63X450S Technical Specifications
| Model | Airtac BSAI Locking Clamp Cylinder BSAI63X450S |
|---|---|
| Series | BSAI ISO 15552 clamp-lock cylinder |
| Bore size | Ø63 mm |
| Stroke | 450 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 BSAI63X450S Is Used
Vertical Axis Load Holding
Prevents a 63mm bore vertical payload from dropping under power loss, clamping the rod securely at any point along the 450mm travel.
Machining Position Lock
Freezes the rod at a specific intermediate coordinate for machining or inspection, ensuring the workpiece stays rigid without relying on the air cushion.
Mid-Stroke Safety Stop
Holds a barrier or guard at a partial extension during operation, engaging only after the rod has fully stopped to lock with 2200 N of force.
Is the Airtac BSAI Locking Clamp Cylinder BSAI63X450S the Right Clamp-Lock?
Choose this 63mm bore model when you need mid-stroke holding power that a standard SAI or end-lock SAIL cannot provide. If your load exceeds the 2200 N clamp capacity, step up to the 80mm bore, which offers a 3600 N holding force and 2513 N thrust at 0.5 MPa. If your load is lighter, the 50mm bore provides 1400 N holding force and 982 N thrust. The 450mm stroke falls within the 1000mm max standard stroke limit. Because the stroke is 450mm, the 20mm rod diameter and M16x1.5 thread provide robust support, but an external guide rail is recommended to prevent side-load damage over this extended travel. This single-rod configuration accepts Basic, FA, FB, CA, CB, CR, LB, TC, TCM1, and TCM2 mounts. It features PT tapered ports (3/8 cylinder port, 1/8 enclasp port) and includes the -S magnet for CMSE/DMSE sensing.
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 BSAI63X450S FAQ
The cylinder provides 2182 N of dynamic push thrust at 0.7 MPa, but the clamp-lock provides a separate 2200 N static holding force. The clamp holds the load in place without pneumatic pressure, whereas thrust moves the load.
No. The clamp locks only after the cylinder rod has stopped moving; it is not a dynamic brake. Additionally, it must be unlocked with balanced air pressure on both sides of the piston, or the rod may jump abruptly.
Related AirTAC Lock & Standard Cylinders
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