Airtac BSAI Locking Clamp Cylinder BSAI100X800S
The AirTAC Airtac BSAI Locking Clamp Cylinder BSAI100X800S is a genuine double-acting ISO 15552 cylinder with a Ø100mm bore, 800mm 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
- Stroke800 mm
- Cylinder portG1/2
- TypeSingle rod (BSAI)
- Enclasp portG1/8
- Rod threadM20×1.5
About the Airtac BSAI Locking Clamp Cylinder BSAI100X800S
The AirTAC BSAI100X800-S is a double-acting ISO 15552 profile cylinder featuring a spring-applied, air-released clamp-lock that grips the 25mm carbon steel rod. It delivers 3927N of thrust at 0.5MPa and secures the load at any position with a 5500N static holding force. You must size the holding capacity against your static load, not the cylinder thrust, because the clamp holding force and pneumatic thrust are two separate quantities. The integrated variable air cushion only decelerates the piston near stroke ends; the mechanical clamp is what actually holds the load.
This 100mm bore model operates at 0.15-0.7MPa and runs at 30-500mm/s. The lock engages only after the rod has stopped, meaning it cannot brake a moving load. It releases via a separate G1/8 enclasp port once air pressures on both sides of the piston are balanced. The -S magnet works with AirTAC CMSE reed and DMSE electronic sensors for position feedback.
Airtac BSAI Locking Clamp Cylinder BSAI100X800S Technical Specifications
| Model | Airtac BSAI Locking Clamp Cylinder BSAI100X800S |
|---|---|
| Series | BSAI ISO 15552 clamp-lock cylinder |
| Bore size | Ø100 mm |
| Stroke | 800 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 BSAI100X800S Is Used
Vertical Axis Load Holding
Secures heavy elevated platens at any point in the 800mm travel, preventing gravity-driven falls when air pressure is removed.
Emergency Power Loss Safety
Spring-applied clamp immediately grips the rod upon air loss, holding the stopped load securely until pressure is restored.
Machining Position Hold
Locks a workpiece at a precise intermediate machining location, absorbing cutting vibrations without relying on live air pressure.
Is the Airtac BSAI Locking Clamp Cylinder BSAI100X800S the Right Clamp-Lock?
Choose this 100mm bore for heavy vertical loads requiring a 5500N static hold and 3927N thrust at 0.5MPa. If your load is lighter, stepping down to the 80mm bore gives 2513N thrust and a 3600N hold. If you need more force, the 125mm bore offers 6136N thrust and an 8600N hold. This BSAI model beats the SAIL series when you must lock at any mid-stroke position rather than just at the stroke end. A plain SAI cylinder suffices if you only need standard motion without any holding brake.
For safety, the clamp locks only after the rod stops and requires balanced pressure to unlock, preventing abrupt rod jumps. Human-safety-critical applications require an independent external safety measure. This 800mm stroke configuration uses PT tapered ports (1/2 inch cylinder port, G1/8 enclasp port) and accepts Basic, FA, FB, CA, CB, CR, LB, TC, TCM1, or TCM2 mounts. Because the 800mm stroke is long, an external guide is recommended to prevent side-load damage to the M20x1.5 rod thread.
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 BSAI100X800S FAQ
The integrated clamp-lock provides a static holding force of 5500N. It is bidirectional, holding the load at any position along the 800mm stroke after the rod has stopped.
The clamp unlocks via a separate G1/8 enclasp port only after the air pressures on both sides of the piston are balanced. This prevents abrupt movement. The lock cannot brake a moving rod, so safety-critical setups need an independent measure.
Related AirTAC Lock & Standard Cylinders
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