Airtac BSAI Locking Clamp Cylinder BSAI80X150S
The AirTAC Airtac BSAI Locking Clamp Cylinder BSAI80X150S is a genuine double-acting ISO 15552 cylinder with a Ø80mm bore, 150mm 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 3600 N.
- BoreØ80 mm
- Stroke150 mm
- Cylinder portG3/8
- TypeSingle rod (BSAI)
- Enclasp portG1/8
- Rod threadM20×1.5
- 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 BSAI80X150S
The AirTAC BSAI80X150-S is a double-acting ISO 15552 extruded aluminum profile cylinder with a built-in spring-applied, air-released clamp-lock. It secures the 25 mm carbon steel piston rod at any point along its 150 mm travel, providing a static holding force of 3600 N. Because it is a single-rod design, the practical thrust is 3518 N at 0.7 MPa extending and 2268 N retracting. Buyers must distinguish between this 3600 N holding force and the cylinder thrust: the clamp resists the static load, while thrust dictates the moving force, so size the hold against the load weight, not the push capability.
This unit includes a -S magnet for CMSE reed and DMSE solid-state sensors housed in the dual-side sensor grooves. The lock is bidirectional and engages only after the rod stops, meaning it cannot brake a moving load. A third G1/8 PT enclasp port releases the clamp when air pressure is balanced across the piston, preventing abrupt rod jumps upon unlock. Remember that the adjustable air cushions only decelerate the piston near stroke ends; they do not hold the load.
Airtac BSAI Locking Clamp Cylinder BSAI80X150S Technical Specifications
| Model | Airtac BSAI Locking Clamp Cylinder BSAI80X150S |
|---|---|
| Series | BSAI ISO 15552 clamp-lock cylinder |
| Bore size | Ø80 mm |
| Stroke | 150 mm |
| Type | Single rod (BSAI), double acting |
| Cylinder port | G3/8 |
| Rod thread | M20×1.5 |
| Lock type | Spring-applied, air-released clamp (any position) |
|---|---|
| Static holding force | 3600 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 1000 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 (Ø80 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 (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa (max) | 3519 N | — |
Push/pull as tabulated. Rated to the 0.7 MPa operating maximum for this series. The clamp holding force (3600 N) is separate from cylinder thrust. Size with a margin.
Where the Airtac BSAI Locking Clamp Cylinder BSAI80X150S Is Used
Vertical Axis Load Holding
Secures a raised vertical payload at any height along the travel, preventing gravity-driven drops during an air pressure loss.
Mid-Stroke Safety Lock
Holds a workpiece securely at an intermediate position for safe operator access or machining without relying on pneumatic pressure.
Inspection Positioning
Locks the rod rigidly at a precise inspection station point, ensuring the part remains completely stationary during quality checks.
Is the Airtac BSAI Locking Clamp Cylinder BSAI80X150S the Right Clamp-Lock?
Choose this 80 mm bore when a 50 mm bore (982 N thrust, 1400 N hold) lacks sufficient holding capacity, but a 100 mm bore (3927 N thrust, 5500 N hold) is oversized. Select BSAI over a SAIL model when you need the rod gripped at an arbitrary mid-stroke position rather than solely at the stroke end. If the application only requires end-of-stroke positioning without intermediate holding, a plain SAI cylinder is adequate.
For safe operation, the clamp locks after the cylinder halts and requires balanced pressure to unlock safely; human-safety-critical applications need an independent external measure. This BSAI80X150-S features PT port threads, a 3/8 cylinder port, a separate G1/8 enclasp port, and accepts Basic, FA, FB, CA, CB, CR, LB, TC, TCM1, or TCM2 mounts. The M20x1.5 rod thread on the 25 mm rod handles high side loads well, though long unsupported strokes over 300 mm still need an external guide.
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 BSAI80X150S FAQ
The clamp-lock provides a static holding force of 3600 N. It engages via a spring to hold the rod bidirectionally at any position, but only after the cylinder has stopped moving.
The lock is released by applying air to the separate G1/8 enclasp port, but only after the air pressures on both sides of the piston are balanced. If pressures are unbalanced, the rod can jump abruptly upon release.
Related AirTAC Lock & Standard Cylinders
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