
The AirTAC Airtac BSAI Locking Clamp Cylinder BSAI32X500S is a genuine double-acting ISO 15552 cylinder with a Ø32mm bore, 500mm 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.
The AirTAC BSAI32X500-S is a double-acting ISO 15552 profile cylinder featuring a built-in spring-applied, air-released enclasp mechanism. It clamps the 12 mm carbon steel piston rod at any position along its 500 mm travel, providing a static holding force of 600 N. Operating at 0.15-0.7 MPa, it generates 402 N of push thrust at 0.5 MPa. Remember that holding force and thrust are separate quantities; you must size the 600 N clamp against your static load, not the cylinder's thrust. A third G1/8 enclasp port controls the unlock function.
This bidirectional lock engages only after the rod has stopped, meaning it cannot brake a moving load. The variable air cushion at the stroke ends only decelerates the piston; the clamp is what actually holds the payload. Because the 500 mm stroke is long relative to the 32 mm bore, an external guide rail is recommended to prevent excessive side loads on the M10x1.25 rod thread. The integrated -S magnet works with AirTAC CMSE reed and DMSE solid-state sensors for position feedback.
| Model | Airtac BSAI Locking Clamp Cylinder BSAI32X500S |
|---|---|
| Series | BSAI ISO 15552 clamp-lock cylinder |
| Bore size | Ø32 mm |
| Stroke | 500 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.
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.
| 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.
Securely clamps a 32 mm rod at any height on vertical axes, preventing gravity drops during a sudden air loss event.
Locks a workpiece at a precise intermediate point in the 500 mm travel for secure milling or inspection without end-stop reliance.
The spring-applied clamp engages instantly when air pressure drops, holding the load safely in place mid-cycle.
Choose this 32 mm bore model when you need mid-stroke holding on a vertical axis and the 402 N push thrust at 0.5 MPa is sufficient. If your static load exceeds the 600 N holding force, step up to the 40 mm bore, which provides 528 N pull thrust and a 900 N clamp. Select this BSAI over a SAIL model when you need the rod to lock anywhere, not just at stroke ends. If position holding is entirely unnecessary, a plain SAI cylinder is a simpler choice. For safety-critical applications, note that the lock requires balanced air pressure on both piston sides to unlock safely; otherwise, the rod may jump abruptly. Human-safety loads require an additional independent safety measure.
To replace this unit, match the single-rod configuration, 32 mm bore, 500 mm stroke, PT port threads, and the -S magnet option. The 32 mm bore uses a 1/8 cylinder port alongside the G1/8 enclasp port. It accepts Basic, FA, FB, CA, CB, CR, LB, TC, TCM1, and TCM2 mounts. The carbon steel rod and M10x1.25 thread handle moderate side loads, but always support long strokes externally.
Quick checklist
The built-in enclasp mechanism provides a static holding force of 600 N. It locks bidirectionally at any position along the 500 mm stroke, but only after the piston rod has come to a complete stop.
The clamp unlocks via a third G1/8 enclasp port, but only when the air pressure on both sides of the piston is balanced. If pressures are not balanced, the rod can move abruptly upon release. For human-safety applications, an additional independent safety measure is required.
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