Airtac BSAI Locking Clamp Cylinder BSAI40X160
The AirTAC BSAI Locking Clamp Cylinder BSAI40X160 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 BSAI40X160
The AirTAC BSAI40X160 is a double-acting ISO 15552 profile cylinder featuring a built-in spring-applied, air-released clamp-lock. It delivers a practical maximum thrust of 879 N at 0.7 MPa, while the integrated enclasp mechanism provides a distinct static holding force of 900 N. It is vital to distinguish these two figures: the thrust moves the load, but the clamp's 900 N is what secures the payload statically at any point along the 160 mm stroke without needing live air pressure.
This bidirectional lock engages only after the piston rod has come to a complete stop, meaning it cannot brake a moving load. Unlocking requires a third G1/8 pneumatic port and balanced pressure on both sides of the piston to prevent abrupt rod jumps upon release. Furthermore, the variable air cushions at the stroke ends only decelerate the piston; they do not hold the load. The clamp mechanism is the sole device responsible for static position holding.
Airtac BSAI Locking Clamp Cylinder BSAI40X160 Technical Specifications
| Model | Airtac BSAI Locking Clamp Cylinder BSAI40X160 |
|---|---|
| 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 BSAI40X160 Is Used
Vertical Load Holding
Secures a 40 mm bore vertical payload at any point in its 160 mm travel, preventing drops when air pressure is removed.
Mid-Stroke Machining Hold
Clamps the rod securely during machining or inspection processes, ensuring the workpiece remains entirely stationary.
Power Loss Safety Stop
Engages instantly upon air loss to freeze the cylinder in its current position, safely halting operations mid-cycle.
Is the Airtac BSAI Locking Clamp Cylinder BSAI40X160 the Right Clamp-Lock?
Select this 40 mm bore model when an application requires holding a load mid-stroke, a capability where the BSAI surpasses the SAIL series (which only locks at stroke ends). If your setup only requires end-of-stroke holding without live pressure, a plain SAI cylinder suffices. If the 628 N thrust at 0.5 MPa or the 900 N holding capacity is insufficient, stepping up to the 50 mm bore yields 982 N of thrust and 1400 N of holding force.
For safety, remember that this clamp locks after the rod stops and requires balanced pressures to unlock safely; human-safety applications need an independent external measure. The BSAI40X160 features a 16 mm carbon steel rod with an M12x1.25 thread and PT tapered ports (1/4 cylinder, G1/8 enclasp). It supports mountings Basic, FA, FB, CA, CB, CR, LB, TC, TCM1, and TCM2. As this is a 160 mm stroke under the 800 mm limit, an external guide is not strictly required, but the 16 mm rod handles standard side loads well.
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 BSAI40X160 FAQ
The BSAI40X160 features a static holding force of 900 N. This clamp-lock mechanism can secure the load at any position along the 160 mm stroke, operating bidirectionally to hold the rod whether it was extending or retracting.
The clamp uses a third G1/8 enclasp port and requires balanced air pressure on both sides of the piston to unlock safely. It only locks after the rod has stopped moving and cannot act as a brake; releasing it without balanced pressure can cause the rod to jump abruptly.
Related AirTAC Lock & Standard Cylinders
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