Airtac BSAI Locking Clamp Cylinder BSAI32X25S
The AirTAC Airtac BSAI Locking Clamp Cylinder BSAI32X25S is a genuine double-acting ISO 15552 cylinder with a Ø32mm bore, 25mm 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 600 N.
- BoreØ32 mm
- Stroke25 mm
- Cylinder portG1/8
- TypeSingle rod (BSAI)
- Enclasp portG1/8
- Rod threadM10×1.25
- 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 BSAI32X25S
The AirTAC BSAI32X25-S is a double-acting ISO 15552 profile cylinder featuring a built-in spring-applied, air-released enclasp mechanism that locks the piston rod at any position along its 25 mm stroke. It delivers a practical maximum thrust of 563 N at 0.7 MPa, while the clamp provides a static holding force of 600 N. It is crucial to understand that holding force and thrust are separate quantities; you must size the clamp's 600 N capacity against your static load, not the cylinder's thrust.
This model includes a -S magnet for precise position sensing with AirTAC CMSE (reed) and DMSE (solid-state) switches. The enclasp operates via a dedicated G1/8 third port, separate from the 1/8 cylinder ports. Remember that the variable air cushion only decelerates the piston near stroke end; the mechanical clamp is the actual load-holding device.
Airtac BSAI Locking Clamp Cylinder BSAI32X25S Technical Specifications
| Model | Airtac BSAI Locking Clamp Cylinder BSAI32X25S |
|---|---|
| Series | BSAI ISO 15552 clamp-lock cylinder |
| Bore size | Ø32 mm |
| Stroke | 25 mm |
| Type | Single rod (BSAI), double acting |
| Cylinder port | G1/8 |
| Rod thread | M10×1.25 |
| Lock type | Spring-applied, air-released clamp (any position) |
|---|---|
| Static holding force | 600 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 700 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 (Ø32 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 (Ø32mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 346 N |
| 0.7 MPa (max) | 563 N | — |
Push/pull as tabulated. Rated to the 0.7 MPa operating maximum for this series. The clamp holding force (600 N) is separate from cylinder thrust. Size with a margin.
Where the Airtac BSAI Locking Clamp Cylinder BSAI32X25S Is Used
Vertical Axis Hold
Maintains a 600 N vertical load securely at any height during air pressure loss, preventing gravity-driven drops on short-stroke lifts.
Mid-Stroke Machining
Locks the workpiece firmly in place for brief drilling or inspection tasks without relying on end-of-stroke mechanical stops.
Emergency Safety Stop
Engages the enclasp instantly upon power loss to freeze the rod position, though an independent measure is needed for human safety.
Is the Airtac BSAI Locking Clamp Cylinder BSAI32X25S the Right Clamp-Lock?
Choose this 32 mm bore if your application demands 600 N of static holding power mid-stroke rather than just at the end. If you need less holding force, step down is not an option as 32 is the smallest bore, but stepping up to a 40 mm bore provides 900 N holding force and 879 N thrust. Choose BSAI over SAIL when you must hold the load anywhere in the travel, not just at the stroke end. If no locking is needed, a plain SAI cylinder suffices.
This BSAI32X25-S has a carbon steel single rod with an M10x1.25 thread, PT tapered ports, and accepts Basic, FA, FB, CA, CB, CR, LB, TC, TCM1, or TCM2 mounts. The clamp locks only after the rod has stopped; it cannot brake a moving load. Always unlock with balanced air pressures on both sides of the piston, or the rod may jump abruptly. For safety-critical applications, add an independent external 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 BSAI32X25S FAQ
The static holding force is 600 N. The clamp locks the rod at any position along the 25 mm stroke, providing bidirectional holding, but it only engages after the cylinder has stopped moving.
The clamp is released by supplying air to the G1/8 enclasp port. You must balance the air pressures on both sides of the piston before unlocking, otherwise the rod can move abruptly. The lock is not a moving-rod brake.
Related AirTAC Lock & Standard Cylinders
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