Airtac BSAI Locking Clamp Cylinder BSAI100X450S
The AirTAC Airtac BSAI Locking Clamp Cylinder BSAI100X450S is a genuine double-acting ISO 15552 cylinder with a Ø100mm bore, 450mm 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
- Stroke450 mm
- Cylinder portG1/2
- 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 BSAI100X450S
The AirTAC BSAI100X450-S is a double-acting ISO 15552 profile cylinder equipped with a spring-applied, air-released clamp-lock. It secures the carbon steel piston rod at any position along its 450 mm travel, providing a static holding force of 5500 N. Because it is a single-rod design, the practical thrust is 3927 N extending and 3681 N retracting at 0.5 MPa, with a maximum push of 5497 N at 0.7 MPa. Buyers must recognize that holding force and thrust are separate quantities; you size the 5500 N clamp against the static load, not the cylinder push force.
This unit includes a -S magnet for precise position detection via AirTAC CMSE reed or DMSE solid-state sensors. The clamp mechanism relies on a dedicated G1/8 enclasp port to release the grip, separate from the 1/2 inch PT cylinder ports. Remember that the variable air cushions only decelerate the piston near stroke ends; the mechanical clamp is what actually holds the load. The lock engages only after the rod stops and cannot brake a moving load.
Airtac BSAI Locking Clamp Cylinder BSAI100X450S Technical Specifications
| Model | Airtac BSAI Locking Clamp Cylinder BSAI100X450S |
|---|---|
| Series | BSAI ISO 15552 clamp-lock cylinder |
| Bore size | Ø100 mm |
| Stroke | 450 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 BSAI100X450S Is Used
Vertical Axis Hold
Prevents heavy vertical platens from dropping when air pressure is lost, locking the load securely at any point in the 450 mm travel.
Machining Position Hold
Clamps the rod during drilling or milling operations to eliminate rod drift, ensuring the workpiece remains rigidly fixed.
Emergency Power Loss Hold
The spring-applied clamp instantly engages upon air loss, freezing the cylinder position to protect operators and tooling.
Is the Airtac BSAI Locking Clamp Cylinder BSAI100X450S the Right Clamp-Lock?
Choose this 100 mm bore when a 50 mm bore (982 N push, 1400 N hold) lacks the clamping strength for a heavy vertical load, but a 125 mm bore is physically oversized. A plain SAI cylinder suffices if you only need standard thrust, but you need the BSAI clamp-lock to hold a mid-stroke position without maintaining live air pressure. Note that a SAIL cylinder only locks at stroke ends, whereas this BSAI locks anywhere. The clamp locks after the rod stops and requires balanced piston pressure via the G1/8 port to unlock safely, preventing abrupt rod jumps. For safety-critical human loads, add an independent mechanical safety measure.
For replacement, verify the single-rod configuration, 100 mm bore, 450 mm stroke, and 1/2 inch PT cylinder ports. The -S magnet works with CMSE/DMSE sensors. Mounting options include Basic, FA, FB, CA, CB, CR, LB, TC, TCM1, and TCM2. The M20x1.5 rod thread provides robust pull strength, but at 450 mm stroke, an external guide is highly recommended to manage side 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 BSAI100X450S FAQ
The clamp-lock provides a static holding force of 5500 N. It locks the rod at any position along the stroke, but it only engages after the cylinder has stopped moving and cannot brake a moving rod.
The clamp is released by applying air to the G1/8 enclasp port only after the piston pressures are balanced, preventing abrupt rod jumps. The air cushions do not hold the load; they only decelerate the piston near stroke ends.
Related AirTAC Lock & Standard Cylinders
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