Airtac BSAI Locking Clamp Cylinder BSAI50X160
The AirTAC Airtac BSAI Locking Clamp Cylinder BSAI50X160 is a genuine double-acting ISO 15552 cylinder with a Ø50mm 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 1400 N.
- BoreØ50 mm
- Stroke160 mm
- Cylinder portG1/4
- TypeSingle rod (BSAI)
- Enclasp portG1/8
- Rod threadM16×1.5
- 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 BSAI50X160
The AirTAC BSAI50X160 is a double-acting ISO 15552 profile cylinder equipped with a spring-applied, air-released clamp-lock mechanism. A defining feature of this series is its capacity to enclasp the 20 mm carbon steel piston rod and secure the load at ANY position along the 160 mm stroke, delivering a static holding force of 1400 N. The bidirectional clamp engages firmly whether the rod was extending or retracting, operating entirely independently from the variable air cushions at the stroke ends. Note that the cushion only decelerates the piston near travel completion, whereas the clamp is the actual load-holding device.
It is vital to distinguish this 1400 N holding force from the cylinder thrust, which peaks at 1374 N at 0.7 MPa (982 N at 0.5 MPa). You must size the clamp holding force against your static load, not the thrust. The enclasp mechanism relies on a third G1/8 port (separate from the 1/4 cylinder ports) and requires 0.15-0.7 MPa to release. Remember that the clamp locks only after the rod has stopped, meaning it cannot brake a moving load, and unlocking demands balanced air pressures on both sides of the piston to prevent abrupt rod movement.
Airtac BSAI Locking Clamp Cylinder BSAI50X160 Technical Specifications
| Model | Airtac BSAI Locking Clamp Cylinder BSAI50X160 |
|---|---|
| Series | BSAI ISO 15552 clamp-lock cylinder |
| Bore size | Ø50 mm |
| Stroke | 160 mm |
| Type | Single rod (BSAI), double acting |
| Cylinder port | G1/4 |
| Rod thread | M16×1.5 |
| Lock type | Spring-applied, air-released clamp (any position) |
|---|---|
| Static holding force | 1400 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 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 (Ø50 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa (max) | 1374 N | — |
Push/pull as tabulated. Rated to the 0.7 MPa operating maximum for this series. The clamp holding force (1400 N) is separate from cylinder thrust. Size with a margin.
Where the Airtac BSAI Locking Clamp Cylinder BSAI50X160 Is Used
Vertical Axis Hold
Secures a 160 mm vertical lift at any intermediate point without relying on continuous air pressure, utilizing the 1400 N clamp.
Machining Position Lock
Freezes the extended rod during drilling or milling operations to prevent deflection, functioning separately from the cushions.
Power Loss Safety
The spring-applied clamp engages automatically upon air pressure loss, holding the load exactly where it stopped.
Is the Airtac BSAI Locking Clamp Cylinder BSAI50X160 the Right Clamp-Lock?
Select this 50 mm bore model when an application requires mid-stroke holding that a plain SAI or a stroke-end-only SAIL cannot provide. If your load demands less holding capacity, stepping down to the 40 mm bore offers 900 N holding force and 528 N pull thrust at 0.5 MPa. Conversely, heavier loads might require the 63 mm bore, which provides 2200 N holding force and 1402 N pull thrust. The 20 mm rod and M16x1.5 thread offer robust side-load resistance, though external guidance is recommended for long unsupported strokes.
This BSAI50X160 features PT tapered ports and standard carbon steel rod material without a magnet. It supports BSAI mounting options including Basic, FA, FB, CA, CB, CR, LB, TC, TCM1, and TCM2. Because the clamp locks only after the cylinder stops and cannot brake moving rods, safety-critical applications require an additional independent safety measure. Furthermore, always ensure balanced pressures before unlocking to avoid hazardous rod jumping.
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 BSAI50X160 FAQ
The clamp-lock provides a static holding force of 1400 N. It can secure the load at any position along the 160 mm stroke, but it only engages after the rod has stopped moving.
The clamp is released via a third G1/8 enclasp port using 0.15-0.7 MPa air pressure. You must balance the air pressures on both sides of the piston before unlocking, otherwise the rod can move abruptly.
Related AirTAC Lock & Standard Cylinders
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