Airtac BSAI Locking Clamp Cylinder BSAI40X160S
The AirTAC Airtac BSAI Locking Clamp Cylinder BSAI40X160S is a genuine double-acting ISO 15552 cylinder with a Ø40mm bore, 160mm 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
- Stroke160 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 BSAI40X160S
The AirTAC BSAI40X160-S is a double-acting ISO 15552 profile cylinder featuring a built-in spring-applied, air-released enclasp mechanism. Unlike standard cylinders, this unit locks the carbon steel piston rod at ANY position along its 160mm travel, delivering a static holding force of 900N. At 0.7MPa it generates 879N of thrust, but buyers must distinguish between thrust and holding force: the 900N clamp rating dictates the static load capacity when air pressure is removed, not the cylinder's push force.
This clamping action is bidirectional, securing the load whether the rod was extending or retracting. A separate G1/8 enclasp port controls the unlock function, requiring 0.15-0.7MPa of balanced pressure to release the grip safely. The integrated variable air cushion decelerates the piston near stroke ends, but the cushion is strictly for impact absorption and does not hold the load. For position feedback, the -S magnet interfaces with AirTAC CMSE reed and DMSE solid-state sensors.
Airtac BSAI Locking Clamp Cylinder BSAI40X160S Technical Specifications
| Model | Airtac BSAI Locking Clamp Cylinder BSAI40X160S |
|---|---|
| Series | BSAI ISO 15552 clamp-lock cylinder |
| Bore size | Ø40 mm |
| Stroke | 160 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 BSAI40X160S Is Used
Vertical Axis Hold
Secures a 900N vertical load at any intermediate stroke position, preventing gravity-driven drops when compressed air is removed.
Power Loss Safety
Spring-applied clamping engages instantly upon air loss, freezing the 160mm stroke mid-travel to protect operators and tooling.
Machining Position Lock
Holds a workpiece rigidly at a precise mid-stroke coordinate for drilling or inspection, ensuring no deflection during the process.
Is the Airtac BSAI Locking Clamp Cylinder BSAI40X160S the Right Clamp-Lock?
Choose this 40mm bore clamp-lock cylinder when an application demands mid-stroke holding without maintaining live air pressure. If the 900N holding force is insufficient, stepping up to the 50mm bore provides 1400N of holding force alongside 982N thrust at 0.5MPa. Conversely, if the load is smaller, the 32mm bore offers 600N holding force. Select the BSAI over a SAIL model when you need to freeze the rod anywhere in the travel, rather than only at stroke ends. A plain SAI cylinder suffices if no emergency holding is required.
This model includes a 16mm carbon steel rod with an M12x1.25 thread, paired with PT-threaded 1/4 cylinder ports. It accepts Basic, FA, FB, CA, CB, CR, LB, TC, TCM1, and TCM2 mounts. Remember that the clamp only engages after the rod stops; it cannot brake a moving load. If human safety depends on the hold, add an independent mechanical measure. Furthermore, always balance pressures before unlocking to prevent abrupt rod jumps.
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 BSAI40X160S FAQ
The integrated enclasp mechanism provides a static holding force of 900N. It locks the rod at any position along the 160mm stroke, but only engages after the rod has completely stopped moving.
The clamp is air-released via a separate G1/8 enclasp port. You must balance the air pressures on both sides of the piston before unlocking; otherwise, the rod can jump abruptly. The lock is not a dynamic brake.
Related AirTAC Lock & Standard Cylinders
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