Airtac BSAI Locking Clamp Cylinder BSAI100X225
The AirTAC Airtac BSAI Locking Clamp Cylinder BSAI100X225 is a genuine double-acting ISO 15552 cylinder with a Ø100mm bore, 225mm 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
- Stroke225 mm
- Cylinder portG1/2
- TypeSingle rod (BSAI)
- Enclasp portG1/8
- Rod threadM20×1.5
About the Airtac BSAI Locking Clamp Cylinder BSAI100X225
The AirTAC BSAI100X225 is a double-acting ISO 15552 profile cylinder equipped with a built-in clamp-lock mechanism. A spring-applied, air-released gripper engages the carbon steel piston rod to hold the load securely at any position along the 225 mm stroke. This specific bore provides a robust static holding force of 5500 N, while delivering up to 5497 N of practical thrust at 0.7 MPa. Buyers must distinguish this holding force from the cylinder's thrust: the 5500 N rating dictates static load retention, whereas thrust dictates the power to move the load.
The clamp operates via a third G1/8 enclasp port, requiring 0.15-0.7 MPa to release. It is crucial to understand that the variable air cushion at the stroke ends only decelerates the piston; the clamp is the true holding device. Furthermore, the lock engages only after the rod has completely stopped, meaning it cannot brake a moving load. Release requires balanced air pressure on both sides of the piston to prevent abrupt rod movement.
Airtac BSAI Locking Clamp Cylinder BSAI100X225 Technical Specifications
| Model | Airtac BSAI Locking Clamp Cylinder BSAI100X225 |
|---|---|
| Series | BSAI ISO 15552 clamp-lock cylinder |
| Bore size | Ø100 mm |
| Stroke | 225 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 BSAI100X225 Is Used
Vertical Load Holding
Maintains vertical payloads at any intermediate height using the 5500 N static clamp, preventing sudden drops during air pressure loss.
Machining Position Hold
Secures a workpiece firmly mid-stroke for machining or inspection, ensuring the rod remains completely immobilized without relying on air cushions.
Emergency Power Loss Hold
Spring-applied clamp engages instantly anywhere in the travel to freeze motion safely when the air supply is interrupted.
Is the Airtac BSAI Locking Clamp Cylinder BSAI100X225 the Right Clamp-Lock?
Choose the BSAI100X225 when an application demands secure mid-stroke holding that a stroke-end lock like SAIL cannot provide, and where the 5500 N static holding capacity matches the load. If the workload is lighter, stepping down to a bore 63 cylinder offers 2200 N holding force and 1402 N pull thrust at 0.5 MPa, which may suffice. Conversely, heavier suspended loads might require the 8600 N holding force of a bore 125 unit. For simple end-of-stroke positioning without intermediate holding, a plain SAI cylinder is sufficient.
Because the 225 mm stroke is under the 300 mm threshold, side-load risks are moderate, though the M20x1.5 rod thread provides excellent rigidity. This single-rod configuration supports mountings including Basic, FA, FB, CA, CB, CR, LB, TC, TCM1, and TCM2. Ensure the PT port threads match your fittings. Note that this unit lacks a magnet, so position sensing via CMSE or DMSE switches is not supported without modification. Always apply balanced pressure to unlock the clamp, and add independent safety measures for human-safety-critical loads.
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 BSAI100X225 FAQ
The clamp-lock provides a static holding force of 5500 N. It engages a spring-applied gripper on the rod to hold the load at any position, but it only locks after the cylinder has stopped moving.
The clamp is released via a third G1/8 enclasp port. You must balance the air pressure on both sides of the piston before unlocking; otherwise, the rod can jump abruptly. It is not a moving-rod brake.
Related AirTAC Lock & Standard Cylinders
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