Airtac BSAI Locking Clamp Cylinder BSAI80X500
The AirTAC Airtac BSAI Locking Clamp Cylinder BSAI80X500 is a genuine double-acting ISO 15552 cylinder with a Ø80mm bore, 500mm 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
- Stroke500 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 BSAI80X500
The AirTAC BSAI80X500 is a double-acting ISO 15552 profile cylinder featuring a spring-applied, air-released enclasp mechanism that clamps the piston rod. It provides a static holding force of 3600 N at any position along its 500 mm travel. Delivering 2513 N of thrust at 0.5 MPa, this bore 80 unit distinguishes holding force from thrust: the clamp resists an external static load, while thrust dictates the pneumatic movement capability.
This third-port enclasp system uses a dedicated G1/8 unlock port, separate from the 3/8 PT cylinder ports, requiring 0.15-0.7 MPa to release. The variable air cushion only decelerates the piston near stroke ends, while the clamp actually secures the load. A 25 mm carbon steel rod with an M20x1.5 thread handles high side loads, though the 500 mm stroke still requires external guidance.
Airtac BSAI Locking Clamp Cylinder BSAI80X500 Technical Specifications
| Model | Airtac BSAI Locking Clamp Cylinder BSAI80X500 |
|---|---|
| Series | BSAI ISO 15552 clamp-lock cylinder |
| Bore size | Ø80 mm |
| Stroke | 500 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 BSAI80X500 Is Used
Vertical Axis Load Holding
Maintains vertical payloads mid-stroke with a 3600 N static hold, preventing gravity-induced drops during cycle pauses.
Power Loss Safety Stop
Spring-applied clamp engages automatically upon air loss to freeze the 500 mm stroke in its current position.
Machining Position Freeze
Secures a workpiece at a precise coordinate for drilling or inspection, independent of pneumatic thrust pressure.
Is the Airtac BSAI Locking Clamp Cylinder BSAI80X500 the Right Clamp-Lock?
Choose this 80 mm bore when an application demands mid-stroke holding that a SAIL stroke-end lock cannot provide. Stepping down to a 63 mm bore drops the holding capacity to 2200 N and thrust to 1559 N, whereas moving up to 100 mm increases the hold to 5500 N. If the load only needs resting at the end of travel, a plain SAI cylinder suffices without the clamp complexity.
Remember the clamp locks only after the rod stops; it cannot brake a moving load. Unlocking requires balanced air pressure on both piston sides, or the rod may jump abruptly. For safety-critical scenarios, add an independent mechanical measure. This BSAI80X500 has a 500 mm stroke, so an external guide is recommended to prevent rod binding. It accepts Basic, FA, FB, CA, CB, CR, LB, TC, TCM1, and TCM2 mounts, using PT ports.
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 BSAI80X500 FAQ
The integrated enclasp provides a static holding force of 3600 N. It locks bidirectionally at any position along the 500 mm stroke, but only engages after the cylinder has stopped moving.
The clamp unlocks via a G1/8 enclasp port using 0.15-0.7 MPa air. You must balance pressure on both sides of the piston before unlocking, or the rod may jump. It is not a dynamic brake.
Related AirTAC Lock & Standard Cylinders
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