
The AirTAC Airtac BSAI Locking Clamp Cylinder BSAI32X175S is a genuine double-acting ISO 15552 cylinder with a Ø32mm bore, 175mm 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 BSAI32X175-S is a double-acting ISO 15552 profile cylinder equipped with a spring-applied, air-released clamp-lock mechanism. A defining feature of this series is the ability to secure the piston rod at ANY position along its 175mm travel, delivering a static holding force of 600 N. It features a standard carbon steel rod and a -S magnet for position sensing. Unlike standard cylinders, this model operates within a 0.15-0.7 MPa pressure range to ensure safe unlocking.
It is vital to distinguish between the cylinder's thrust and the clamp's holding force. The 32mm bore generates 402 N of push thrust at 0.5 MPa, but the 600 N holding force is a separate mechanical grip applied directly to the rod by the enclasp unit. Remember that the variable air cushion only decelerates the piston near stroke ends; it does not hold the load. The clamp itself requires a third G1/8 pneumatic port to release the spring tension, and it only engages to hold the load after the rod has completely stopped moving.
| Model | Airtac BSAI Locking Clamp Cylinder BSAI32X175S |
|---|---|
| Series | BSAI ISO 15552 clamp-lock cylinder |
| Bore size | Ø32 mm |
| Stroke | 175 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.
Holds a 175mm vertical lift securely at any intermediate height with 600 N of static grip, preventing sudden drops during a power loss event.
Locks the workpiece at a precise non-endpoint position for machining or inspection, ensuring the rod does not shift under lateral cutting forces.
Secures guard doors or heavy fixtures at variable open positions, engaging the spring-applied clamp only after the cylinder motion has fully stopped.
Select this 32mm bore model when an application requires intermediate positioning and drop prevention, stepping up from a plain SAI32 cylinder that only moves loads without securing them. If you previously used a SAIL32, which only locks at the stroke endpoints, the BSAI32X175-S is the necessary upgrade for mid-stroke holding. If your load only requires end-of-stroke positioning and no intermediate stops, a plain SAI remains the simpler choice. For safety, note that this clamp is not a dynamic brake; it locks only after the cylinder stops, and releasing the clamp requires balanced air pressure on both sides of the piston to prevent the rod from jumping abruptly. For critical human-safety loads, add an independent external safety measure.
This specific configuration includes a single carbon steel rod with an M10x1.25 thread, PT tapered port threads (1/8 cylinder port plus a G1/8 enclasp port), and a -S magnet compatible with AirTAC CMSE reed and DMSE electronic sensors. It supports the full BSAI single-rod mounting set (Basic, FA, FB, CA, CB, CR, LB, TC, TCM1, TCM2). If your load demands higher holding power, the neighbouring 40mm bore offers 628 N thrust at 0.5 MPa and a 900 N holding force.
Quick checklist
The clamp-lock provides a static holding force of 600 N and can secure the rod at any point along the 175mm stroke. This bidirectional grip is spring-applied and air-released, functioning independently from the 402 N pneumatic thrust.
The clamp unlocks only when air pressure is balanced on both sides of the piston, preventing abrupt rod jumps. The -S magnet is precisely compatible with AirTAC CMSE reed switches and DMSE electronic sensors for accurate position detection.
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