Airtac BSAI Locking Clamp Cylinder BSAI32X250
The AirTAC Airtac BSAI Locking Clamp Cylinder BSAI32X250 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 BSAI32X250
The AirTAC BSAI32X250 is a double-acting ISO 15552 profile cylinder with a built-in spring-applied, air-released clamp-lock. It grips the 12mm carbon steel rod to hold a load securely at any position along the 250mm stroke, providing a static holding force of 600 N. The base cylinder generates 563 N of thrust at 0.7 MPa. A critical distinction exists between holding force and thrust: you must size the 600 N clamp capacity against your static load, not the cylinder's thrust, because the lock's job is to keep the rod still, not to move it.
This enclasp mechanism operates via a third G1/8 PT unlock port, separate from the 1/8 cylinder ports, and requires balanced air pressure to release safely. The variable air cushions at both ends only decelerate the piston near stroke limits; they do not hold the load. Furthermore, the lock engages only after the rod has stopped, meaning it cannot brake a moving rod, and safety-critical applications need an independent fallback measure.
Airtac BSAI Locking Clamp Cylinder BSAI32X250 Technical Specifications
| Model | Airtac BSAI Locking Clamp Cylinder BSAI32X250 |
|---|---|
| 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 BSAI32X250 Is Used
Vertical Axis Holding
Locks a 600N load at any intermediate height on a vertical lift, preventing uncommanded descent during operation.
Power Loss Safety
Spring-applied clamp secures the rod instantly if air pressure drops, safely freezing the payload mid-stroke.
Machining Position Hold
Provides a rigid 600N clamp to immobilize a workpiece at a custom stroke depth for drilling or inspection.
Is the Airtac BSAI Locking Clamp Cylinder BSAI32X250 the Right Clamp-Lock?
Choose this 32mm bore model when an application requires mid-stroke holding rather than just end-of-stroke clamping, which is where it outperforms a SAIL cylinder. If your load demands a higher holding capacity, stepping up to the 40mm bore increases the static hold to 900 N and thrust to 879 N at 0.7 MPa. For simple transfer tasks without position-holding needs, a plain SAI cylinder suffices. To replace this unit, match the single-rod configuration, 250mm stroke, PT port threads, and the BSAI mounting set (Basic, FA, FB, CA, CB, CR, LB, TC, TCM1, TCM2). Because the stroke is 250mm, external side-load guidance is recommended to protect the 12mm rod and M10x1.25 thread from 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 BSAI32X250 FAQ
It uses a spring-applied, air-released mechanism that grips the rod at any stroke position with a 600 N static holding force. It locks bidirectionally, meaning it holds whether the rod was extending or retracting.
No, the clamp locks only after the cylinder has stopped; it cannot brake a moving rod. Additionally, it must be unlocked with balanced air pressures on both sides of the piston, or the rod may jump abruptly upon release.
Related AirTAC Lock & Standard Cylinders
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