Airtac BSAI Locking Clamp Cylinder BSAI40X100
The AirTAC BSAI Locking Clamp Cylinder BSAI40X100 is a genuine double-acting ISO 15552 cylinder with a Ø40mm bore, 100mm 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 900 N.
- BoreØ40 mm
- Stroke100 mm
- Cylinder portG1/4
- TypeSingle rod (BSAI)
- Enclasp portG1/8
- Rod threadM12×1.25
- 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 BSAI40X100
The AirTAC BSAI40X100 is a double-acting ISO 15552 profile cylinder featuring a built-in spring-applied, air-released clamp-lock. It secures the 16mm carbon steel rod at any position along the 100mm stroke, delivering a static holding force of 900 N. The cylinder generates 628 N of thrust at 0.5 MPa (879 N at 0.7 MPa). Buyers must distinguish this holding force from thrust: the 900 N clamp rating dictates static load capacity, while thrust determines the motion force.
This enclasp mechanism is bidirectional, locking the rod securely whether it was extending or retracting. It engages only after the piston stops, meaning it cannot brake a moving load. Release requires a 0.15-0.7 MPa air signal to the G1/8 unlock port, and pressures on both sides of the piston must be balanced to prevent the rod from jumping abruptly. The variable air cushion at the ends only decelerates travel; it does not hold the load.
Airtac BSAI Locking Clamp Cylinder BSAI40X100 Technical Specifications
| Model | Airtac BSAI Locking Clamp Cylinder BSAI40X100 |
|---|---|
| Series | BSAI ISO 15552 clamp-lock cylinder |
| Bore size | Ø40 mm |
| Stroke | 100 mm |
| Type | Single rod (BSAI), double acting |
| Cylinder port | G1/4 |
| Rod thread | M12×1.25 |
| Lock type | Spring-applied, air-released clamp (any position) |
|---|---|
| Static holding force | 900 N |
| Enclasp / unlock port | G1/8 |
| Operating pressure | 0.15 – 0.7 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Max stroke | Up to 800 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 (Ø40 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa (max) | 880 N | — |
Push/pull as tabulated. Rated to the 0.7 MPa operating maximum for this series. The clamp holding force (900 N) is separate from cylinder thrust. Size with a margin.
Where the Airtac BSAI Locking Clamp Cylinder BSAI40X100 Is Used
Vertical Load Holding
Suspends and locks a 40mm vertical axis payload mid-stroke during assembly, preventing gravity-driven drops when air pressure is removed.
Power Outage Safety
Engages the 900 N clamp instantly upon loss of air supply, freezing the rod at its exact current travel position.
Machining Position Hold
Secures a workpiece at a precise non-end-of-stroke coordinate for drilling or inspection, ensuring no deflection during the process.
Is the Airtac BSAI Locking Clamp Cylinder BSAI40X100 the Right Clamp-Lock?
Choose this 40mm bore when a 32mm bore (402 N thrust, 600 N hold) lacks sufficient holding capacity for a mid-stroke stop, but a 50mm bore (982 N thrust, 1400 N hold) is oversized. Select the BSAI40X100 over a SAIL40X100 if the application requires locking at any intermediate point rather than only at the stroke ends. If no mid-stroke holding is needed, a plain SAI cylinder suffices.
For safe operation, remember the clamp locks only after the cylinder stops and requires balanced pressure to unlock safely; safety-critical applications need an independent external measure. This single-rod PT-threaded model accepts Basic, FA, FB, CA, CB, CR, LB, TC, TCM1, and TCM2 mountings. Without a -S magnet, it cannot use CMSE or DMSE sensors.
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 BSAI40X100 FAQ
The BSAI40X100 provides a static holding force of 900 N. This clamp engages via spring pressure to hold the rod at any position bidirectionally, operating entirely independently from the cylinder's 628 N thrust force.
No, the clamp-lock engages only after the cylinder has stopped moving; it cannot brake a dynamic load. Additionally, unlocking requires balanced air pressure on both piston sides to prevent the rod from jumping, and human-safety applications require an independent external measure.
Related AirTAC Lock & Standard Cylinders
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