Airtac BSAI Locking Clamp Cylinder BSAI80X80S
The AirTAC Airtac BSAI Locking Clamp Cylinder BSAI80X80S is a genuine double-acting ISO 15552 cylinder with a Ø80mm bore, 80mm 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
- Stroke80 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 BSAI80X80S
The AirTAC BSAI80X80-S is a double-acting ISO 15552 profile cylinder featuring a built-in spring-applied, air-released clamp-lock mechanism. Unlike standard cylinders, this unit uses a third G1/8 enclasp port to release the clamp, allowing the rod to lock securely at ANY position along its 80 mm stroke. The integrated clamp provides a static holding force of 3600 N, while the cylinder itself generates 2513 N of thrust at 0.5 MPa. It is crucial to distinguish holding force from thrust: the 3600 N clamp rating resists external static loads, whereas the 2513 N thrust dictates the cylinder's motive power.
This model includes a carbon steel single rod (25 mm diameter, M20x1.5 thread) and an -S magnet for precise position sensing with AirTAC CMSE reed or DMSE solid-state switches. Remember that the variable air cushion only decelerates the piston near stroke end; the mechanical clamp is what actually holds the load. The clamp locks bidirectionally but only after the rod has stopped moving, meaning it cannot serve as an active braking device for a moving load.
Airtac BSAI Locking Clamp Cylinder BSAI80X80S Technical Specifications
| Model | Airtac BSAI Locking Clamp Cylinder BSAI80X80S |
|---|---|
| Series | BSAI ISO 15552 clamp-lock cylinder |
| Bore size | Ø80 mm |
| Stroke | 80 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 BSAI80X80S Is Used
Vertical Load Holding
Locks at any mid-stroke position on vertical axes to securely hold a 3600 N load during material transfer without relying on continuous air pressure.
Power Loss Safety
The spring-applied clamp engages automatically if air pressure drops, freezing the 80 mm bore cylinder in place to prevent uncontrolled descents.
Machining Position Lock
Holds a workpiece firmly at a specific non-end stroke coordinate during inspection or light machining, ensuring the part does not drift under vibration.
Is the Airtac BSAI Locking Clamp Cylinder BSAI80X80S the Right Clamp-Lock?
Select this 80 mm bore model when an application demands 2513 N push thrust at 0.5 MPa combined with a robust 3600 N static hold anywhere in the stroke. If your load requires less force, stepping down to a 63 mm bore offers 1559 N thrust and a 2200 N hold, whereas a 100 mm bore provides 3927 N thrust and a 5500 N hold. Choose this BSAI over a SAIL cylinder when you need to secure the load at a mid-stroke position rather than only at the stroke ends. If position holding is not required at all, a plain SAI cylinder suffices.
When replacing this cylinder, match the single-rod configuration, 80 mm bore, 80 mm stroke, and PT port threads. The 80 mm bore utilizes 3/8 cylinder ports plus the G1/8 enclasp port. Compatible mounts include Basic, FA, FB, CA, CB, CR, LB, TC, TCM1, and TCM2. For safe operation, ensure the cylinder has fully stopped before applying the clamp, and balance the air pressures on both sides of the piston before unlocking to prevent the rod from jumping abruptly. For safety-critical human loads, always add an independent mechanical 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 BSAI80X80S FAQ
The BSAI80X80-S provides a static holding force of 3600 N. The clamp is spring-applied and air-released, meaning it engages automatically to hold the load at any position along the stroke without requiring continuous air pressure.
The clamp locks only after the cylinder has stopped moving; it cannot brake a moving rod. To unlock it safely, you must balance the air pressures on both sides of the piston via the cylinder ports, otherwise the rod may jump abruptly when the G1/8 enclasp port releases the clamp.
Related AirTAC Lock & Standard Cylinders
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