Airtac BSAI Locking Clamp Cylinder BSAI32X250S
The AirTAC Airtac BSAI Locking Clamp Cylinder BSAI32X250S is a genuine double-acting ISO 15552 cylinder with a Ø32mm bore, 250mm 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
- Stroke250 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 BSAI32X250S
The AirTAC BSAI32X250-S is a double-acting ISO 15552 profile cylinder equipped with a built-in clamp-lock mechanism. A spring-applied, air-released gripper engages the 12 mm carbon steel rod to hold the load securely at any position along its 250 mm travel. This specific bore provides a static holding force of 600 N, while generating 402 N of push thrust at 0.5 MPa. You must size the holding force against your static load separately from the cylinder thrust, as these are two distinct quantities.
This model includes a -S magnet for precise position sensing with AirTAC CMSE (reed) or DMSE (electronic) switches. The clamp operates via a dedicated G1/8 enclasp port, which is a third air connection entirely separate from the 1/8 PT cylinder drive ports. Remember that the variable air cushions only decelerate the piston near the stroke ends; the mechanical clamp is the sole device responsible for maintaining the hold.
Airtac BSAI Locking Clamp Cylinder BSAI32X250S Technical Specifications
| Model | Airtac BSAI Locking Clamp Cylinder BSAI32X250S |
|---|---|
| Series | BSAI ISO 15552 clamp-lock cylinder |
| Bore size | Ø32 mm |
| Stroke | 250 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 BSAI32X250S Is Used
Vertical Axis Mid-Stroke Hold
Maintains a 600 N vertical load securely at any height without relying on continuous air pressure, preventing sudden drops during workpiece transfers.
Emergency Power Loss Safety
The spring-applied clamp engages automatically upon air loss, freezing the 12 mm rod exactly where it stopped to protect operators and tooling.
Machining Position Lock
Locks a part at a specific intermediate location for drilling or inspection, ensuring the workpiece remains completely rigid without drift.
Is the Airtac BSAI Locking Clamp Cylinder BSAI32X250S the Right Clamp-Lock?
Choose this 32 mm bore when an application requires intermediate stopping and a 600 N static hold is sufficient for the load. If your payload demands a higher holding capacity, stepping up to the 40 mm bore increases the clamp force to 900 N and the thrust to 628 N. Conversely, if locking is only required at the fully extended or retracted stroke ends, a plain SAIL stroke-end lock cylinder is a simpler alternative. The BSAI series is necessary when you must enclasp the rod mid-stroke.
As a replacement match, ensure you specify the single-rod configuration, 32 mm bore, 250 mm stroke, and PT port threads. The 12 mm rod with an M10x1.25 thread provides a compact mounting interface, but at 250 mm of travel, external guidance is recommended to prevent excessive side-loading on the bearing. This cylinder accepts Basic, FA, FB, CA, CB, CR, LB, TC, TCM1, and TCM2 mounts. The clamp locks only after the rod has stopped moving—it cannot brake a moving load. Always balance the air pressure on both sides of the piston before unlocking, or the rod may jump abruptly. Safety-critical applications require an independent external holding 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 BSAI32X250S FAQ
The clamp-lock provides a static holding force of 600 N. It is a bidirectional, spring-applied gripper that locks the rod at any position along the 250 mm stroke, separate from the 402 N pneumatic thrust.
The clamp unlocks via a dedicated G1/8 enclasp port using 0.15-0.7 MPa air pressure. You must balance the pressure on both sides of the piston before releasing the clamp; otherwise, the rod can move abruptly. It only locks after the rod has stopped and cannot brake a moving load.
Related AirTAC Lock & Standard Cylinders
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