Airtac BSAI Locking Clamp Cylinder BSAI100X25
The AirTAC Airtac BSAI Locking Clamp Cylinder BSAI100X25 is a genuine double-acting ISO 15552 cylinder with a Ø100mm bore, 25mm 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
- Stroke25 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 BSAI100X25
The AirTAC BSAI100X25 is a double-acting ISO 15552 profile cylinder with a built-in clamp-lock mechanism. A spring-applied, air-released gripper clamps the 25 mm carbon steel piston rod, holding the load at any position along the 25 mm stroke with a static holding force of 5500 N. Operating pressure ranges from 0.15 to 0.7 MPa, and the speed range is 30-500 mm/s. The cylinder thrust is separate from the clamp holding force; the bore generates 3927 N push thrust at 0.5 MPa, but you must size the 5500 N holding force against your static load, not the thrust.
The clamp locks only after the cylinder has stopped; it cannot brake a moving rod. The variable air cushion at the stroke ends only decelerates the piston, while the clamp secures the load. Unlocking requires balanced air pressure on both sides of the piston via the G1/8 enclasp port, preventing abrupt rod movement. For safety-critical applications, an additional independent safety measure is required.
Airtac BSAI Locking Clamp Cylinder BSAI100X25 Technical Specifications
| Model | Airtac BSAI Locking Clamp Cylinder BSAI100X25 |
|---|---|
| Series | BSAI ISO 15552 clamp-lock cylinder |
| Bore size | Ø100 mm |
| Stroke | 25 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 BSAI100X25 Is Used
Vertical Axis Holding
Secures heavy lifted loads at any point along the vertical travel, preventing drops when air pressure is removed.
Power Loss Safety
Engages automatically upon air loss to clamp the rod in place, providing a reliable emergency hold mid-stroke.
Machining Position Lock
Holds a workpiece firmly in a specific position for machining or inspection processes without relying on live air pressure.
Is the Airtac BSAI Locking Clamp Cylinder BSAI100X25 the Right Clamp-Lock?
Choose this 100 mm bore when a 50 mm bore (982 N thrust at 0.5 MPa, 1400 N holding force) lacks sufficient load capacity, or step down to a 50 mm bore if the 5500 N clamp force exceeds your requirements. Select the BSAI clamp-lock over an AirTAC SAIL model when you need to hold the load at any intermediate position, rather than only at the stroke end. If position holding is entirely unnecessary, a plain SAI cylinder suffices.
This BSAI100X25 configuration features a single carbon steel rod, 25 mm stroke, PT tapered port threads, and accepts Basic, FA, FB, CA, CB, CR, LB, TC, TCM1, and TCM2 mounts. The 25 mm rod thread provides high side-load resistance. Without a magnet specified, it does not support CMSE or DMSE sensors. Remember to balance pressures before unlocking to avoid rod jump.
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 BSAI100X25 FAQ
The clamp-lock provides a static holding force of 5500 N. It is spring-applied and air-released, allowing it to hold the load at any position along the stroke, bidirectionally.
No, the clamp locks only after the cylinder has stopped; it cannot brake a moving rod. Additionally, it must be unlocked with balanced air pressures on both sides via the G1/8 enclasp port, or the rod may move abruptly.
Related AirTAC Lock & Standard Cylinders
Request a Quote for Airtac BSAI Locking Clamp Cylinder BSAI100X25
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