Airtac BSAI Locking Clamp Cylinder BSAI32X400S
The AirTAC Airtac BSAI Locking Clamp Cylinder BSAI32X400S is a genuine double-acting ISO 15552 cylinder with a Ø32mm bore, 400mm 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
- Stroke400 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 BSAI32X400S
The AirTAC BSAI32X400-S is a double-acting ISO 15552 profile cylinder equipped with a spring-applied, air-released clamp-lock mechanism. It secures the 12mm carbon steel rod at any position along its 400mm travel, providing a static holding force of 600 N. Because the rod extends 400mm on a 32mm bore, you should support the load with an external guide to prevent excessive side-loading on the rod seals. The base cylinder generates 402 N of push thrust at 0.5 MPa, but remember that holding force and thrust are separate quantities; you must size the 600 N clamp capacity against your static load, not the pneumatic thrust.
This unit features a PT tapered port thread type and includes a -S magnet for position sensing. It works precisely with AirTAC CMSE reed switches and DMSE solid-state electronic sensors. A third G1/8 enclasp port supplies air to release the brake, requiring 0.15-0.7 MPa. The clamp locks only after the piston has stopped moving; it cannot brake a moving rod. Furthermore, you must balance the air pressure on both sides of the piston before unlocking, or the rod may jump abruptly. The variable air cushion at the stroke ends only decelerates the piston and does not contribute to holding the load.
Airtac BSAI Locking Clamp Cylinder BSAI32X400S Technical Specifications
| Model | Airtac BSAI Locking Clamp Cylinder BSAI32X400S |
|---|---|
| Series | BSAI ISO 15552 clamp-lock cylinder |
| Bore size | Ø32 mm |
| Stroke | 400 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 BSAI32X400S Is Used
Vertical Axis Hold
Secures a 32mm bore vertical lift at any intermediate height during a process cycle, preventing gravity drops without maintaining live air pressure.
Power Loss Safety
Engages the 600 N clamp instantly upon air loss to freeze the rod mid-stroke, protecting operators and workpieces from unexpected falls.
Machining Position Lock
Holds a workpiece firmly at a precise non-end location for drilling or inspection, ensuring the load remains completely motionless.
Is the Airtac BSAI Locking Clamp Cylinder BSAI32X400S the Right Clamp-Lock?
Step down if your static load is very light, but stepping up to a BSAI40 bore increases the holding force to 900 N and thrust to 628 N at 0.5 MPa. Choose this BSAI model over a SAIL cylinder when you need to lock at any point in the 400mm travel, rather than just holding at the stroke end. If you only need a standard pneumatic actuator without an intermediate hold, a plain SAI cylinder suffices. For safety-critical stops, add an independent mechanical measure since the clamp is not a dynamic brake. This single-rod replacement accepts Basic, FA, FB, CA, CB, CR, LB, TC, TCM1, and TCM2 mounts. The 400mm stroke on a 32mm bore requires an external guide to manage side loads and prevent rod deflection.
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 BSAI32X400S FAQ
The clamp-lock provides a static holding force of 600 N. It locks the rod bidirectionally at any position along the 400mm stroke, but only after the piston has stopped moving.
You must balance the air pressure on both sides of the piston before applying air to the G1/8 enclasp port. If pressures are unbalanced, the rod can jump abruptly upon release.
Related AirTAC Lock & Standard Cylinders
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