Airtac BSAI Locking Clamp Cylinder BSAI32X125S
The AirTAC Airtac BSAI Locking Clamp Cylinder BSAI32X125S is a genuine double-acting ISO 15552 cylinder with a Ø32mm bore, 125mm 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
- Stroke125 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 BSAI32X125S
The AirTAC BSAI32X125-S is a double-acting ISO 15552 profile cylinder equipped with a spring-applied, air-released clamp-lock. It locks the carbon steel piston rod at any position along its 125 mm stroke, delivering a static holding force of 600 N. Because this is the magnet-equipped -S variant, it directly supports AirTAC CMSE reed and DMSE electronic solid-state sensors for precise position feedback.
It is crucial to distinguish this 600 N holding force from the cylinder thrust, which peaks at 563 N at 0.7 MPa. The clamp mechanism uses a dedicated G1/8 enclasp port—a third line separate from the standard 1/8 cylinder ports—to release the grip. Remember that the variable air cushions only decelerate the piston near stroke ends; the clamp is the sole device responsible for securing the load.
Airtac BSAI Locking Clamp Cylinder BSAI32X125S Technical Specifications
| Model | Airtac BSAI Locking Clamp Cylinder BSAI32X125S |
|---|---|
| Series | BSAI ISO 15552 clamp-lock cylinder |
| Bore size | Ø32 mm |
| Stroke | 125 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 BSAI32X125S Is Used
Vertical Axis Intermediate Hold
Locks a lifted load securely at any height along the 125 mm stroke, preventing falls during mid-cycle pauses without relying on continuous air pressure.
Power Loss Safety Stop
The spring-applied clamp engages automatically upon air loss, freezing the rod instantly to secure the workpiece wherever it was stopped.
Machining Position Lock
Holds a part rigidly against machining vibration with 600 N of static grip, ensuring accuracy while the cylinder is unpressurized.
Is the Airtac BSAI Locking Clamp Cylinder BSAI32X125S the Right Clamp-Lock?
Choose this 32 mm bore when an application requires intermediate stopping, whereas a plain SAI cylinder suffices for basic end-to-end movement. If 600 N of holding force is insufficient, stepping up to the 40 mm bore increases the static clamp hold to 900 N and thrust to 628 N at 0.5 MPa. Conversely, if you only need to prevent dropping at the fully extended or retracted end-points, the simpler SAIL stroke-end lock avoids the extra third-port plumbing.
This model features a PT tapered port thread and accepts Basic, FA, FB, CA, CB, CR, LB, TC, TCM1, and TCM2 mounts. The clamp locks only after the rod has stopped; 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. For safety-critical human loads, install an independent external 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 BSAI32X125S FAQ
The clamp-lock provides a static holding force of 600 N. It is bidirectional and grips the rod securely at any position along the stroke, but only after the piston has come to a complete stop.
The clamp uses a dedicated G1/8 enclasp port and requires balanced air pressure on both sides of the piston to unlock. If pressures are not balanced when released, the rod can move abruptly. It is not a moving-rod brake and cannot stop a load in motion.
Related AirTAC Lock & Standard Cylinders
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