Airtac BSAI Locking Clamp Cylinder BSAI100X300S
The AirTAC Airtac BSAI Locking Clamp Cylinder BSAI100X300S is a genuine double-acting ISO 15552 cylinder with a Ø100mm bore, 300mm 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 5500 N.
- BoreØ100 mm
- Stroke300 mm
- Cylinder portG1/2
- TypeSingle rod (BSAI)
- Enclasp portG1/8
- Rod threadM20×1.5
About the Airtac BSAI Locking Clamp Cylinder BSAI100X300S
The AirTAC BSAI100X300-S is a double-acting ISO 15552 profile cylinder equipped with a spring-applied, air-released enclasp mechanism. A defining feature is its ability to lock the carbon steel piston rod at ANY position along the 300 mm stroke, providing a robust static holding force of 5500 N. Because it includes a -S magnet, it integrates seamlessly with AirTAC CMSE reed and DMSE electronic sensors for position feedback. Operating strictly within a 0.15-0.7 MPa range, it generates a practical maximum thrust of 5497 N.
It is crucial to distinguish the 5500 N static holding force from the 5497 N cylinder thrust; the clamp secures the static load, while thrust moves it. Furthermore, the variable air cushion at the stroke ends only decelerates the piston to prevent impact damage, whereas the actual load holding is exclusively managed by the clamp. The enclasp mechanism requires a third G1/8 pneumatic port to release its grip, operating entirely separately from the primary 1/2 inch cylinder ports.
Airtac BSAI Locking Clamp Cylinder BSAI100X300S Technical Specifications
| Model | Airtac BSAI Locking Clamp Cylinder BSAI100X300S |
|---|---|
| Series | BSAI ISO 15552 clamp-lock cylinder |
| Bore size | Ø100 mm |
| Stroke | 300 mm |
| Type | Single rod (BSAI), double acting |
| Cylinder port | G1/2 |
| Rod thread | M20×1.5 |
| Lock type | Spring-applied, air-released clamp (any position) |
|---|---|
| Static holding force | 5500 N |
| Enclasp / unlock port | G1/8 |
| Operating pressure | 0.15 – 0.7 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 500 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 (Ø100 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 (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa (max) | 5498 N | — |
Push/pull as tabulated. Rated to the 0.7 MPa operating maximum for this series. The clamp holding force (5500 N) is separate from cylinder thrust. Size with a margin.
Where the Airtac BSAI Locking Clamp Cylinder BSAI100X300S Is Used
Vertical Load Holding
Secures heavy vertical loads at any intermediate height, preventing gravity-driven drops during operation or power loss.
Machining Position Lock
Holds a workpiece firmly in a specific mid-stroke position for machining or inspection processes without relying on continuous air pressure.
Power Loss Safety
The spring-applied clamp engages automatically upon air loss, freezing the rod exactly where it stopped to protect operators and tooling.
Is the Airtac BSAI Locking Clamp Cylinder BSAI100X300S the Right Clamp-Lock?
Step down to an 80 mm bore if your load requires less force, noting its thrust is 2513 N at 0.5 MPa with a 3600 N holding capacity. Choose this BSAI100X300-S over a SAIL model when you need to arrest and hold a load mid-stroke, rather than solely at the end of travel. If no intermediate holding is required, a plain SAI cylinder suffices. Remember that the clamp locks only after the rod has completely stopped; it cannot brake a moving load. Additionally, unlocking requires balanced air pressure on both piston sides, or the rod may jump abruptly.
For a drop-in replacement, match the 100 mm bore, 300 mm stroke, PT port threads, and single-rod configuration. The 300 mm stroke on this 25 mm diameter rod warrants an external guide to prevent excessive side-loading. Mounting options include Basic, FA, FB, CA, CB, CR, LB, TC, TCM1, and TCM2. The -S magnet enables precise tracking via CMSE and DMSE switches.
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 BSAI100X300S FAQ
The built-in enclasp clamp provides a static holding force of 5500 N. This holds the load at any position along the stroke, but it only engages after the cylinder has stopped moving and cannot act as a dynamic brake.
The clamp is released via a third G1/8 enclasp port. To prevent the rod from jumping abruptly, the air pressures on both sides of the piston must be balanced before unlocking, ensuring the cylinder has stopped completely.
Related AirTAC Lock & Standard Cylinders
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