Airtac BSAI Locking Clamp Cylinder BSAI32X25
The AirTAC Airtac BSAI Locking Clamp Cylinder BSAI32X25 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 BSAI32X25
The AirTAC BSAI32X25 is a double-acting ISO 15552 profile cylinder featuring a spring-applied, air-released enclasp mechanism that clamps the 12mm carbon steel rod. It locks securely at ANY position along its 25mm travel, delivering a static holding force of 600 N. The base extruded-aluminum body is dimensionally interchangeable with ISO 15552 mounting interfaces, while the clamp head adds length. Operating pressure is 0.15-0.7 MPa, and it accepts PT tapered port threads.
A critical design distinction is that this holding force of 600 N is entirely separate from the cylinder's 563 N maximum thrust at 0.7 MPa. You must size the clamp's holding capacity against your static load, not the pneumatic thrust. The variable air cushion only decelerates the piston near stroke ends; it does not hold the load. Furthermore, the clamp operates via a dedicated G1/8 enclasp port, and the mechanism locks only AFTER the rod has stopped—it cannot brake a moving rod.
Airtac BSAI Locking Clamp Cylinder BSAI32X25 Technical Specifications
| Model | Airtac BSAI Locking Clamp Cylinder BSAI32X25 |
|---|---|
| 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 BSAI32X25 Is Used
Vertical Axis Hold
Prevents gravity-driven drops on vertical strokes by clamping the rod exactly where it stops, securing the load without live air pressure.
Power Loss Safety
Spring-applied enclasp engages automatically during an air or power failure, freezing the 12mm rod in place to prevent sudden tool crashes.
Machining Position Lock
Holds a workpiece or fixture rigidly at a specific mid-stroke coordinate for brief machining or inspection tasks without cycling to an end cap.
Is the Airtac BSAI Locking Clamp Cylinder BSAI32X25 the Right Clamp-Lock?
Choose this 32mm bore model when an application requires mid-stroke positioning and safety holding that exceeds the 402 N push thrust at 0.5 MPa. If your load only needs holding at the fully extended or retracted end, a plain SAI or SAIL stroke-end lock cylinder suffices. Step up to the 40mm bore if you need greater holding power, as it provides 900 N of clamp force and 628 N thrust at 0.5 MPa. The 12mm rod and M10x1.25 thread offer robust support for short 25mm strokes, keeping side-load stress minimal.
For replacements, match the single-rod configuration, 32mm bore, 25mm stroke, and PT ports. The correct mounting set includes Basic, FA, FB, CA, CB, CR, LB, TC, TCM1, and TCM2. Because this unit lacks the -S magnet option, it cannot use CMSE or DMSE sensors. Always ensure cylinder pressures are balanced before unlocking, or the rod may jump abruptly. If human safety depends on the hold, add an independent mechanical 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 BSAI32X25 FAQ
The clamp-lock provides a static holding force of 600 N. This is the force the spring-applied enclasp exerts on the rod to hold a static load at any position, which is distinct from the cylinder's 563 N pneumatic thrust.
The clamp is unlocked by applying air to the G1/8 enclasp port, but only after the air pressures on both sides of the piston are balanced. If pressures are not balanced, the rod can jump abruptly upon release. The clamp locks only after the rod stops and cannot brake a moving load.
Related AirTAC Lock & Standard Cylinders
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