Airtac BSAID Clamp Cylinder BSAID40X150
The AirTAC Airtac BSAID Clamp Cylinder BSAID40X150 is a genuine double-acting ISO 15552 cylinder with a Ø40mm bore, 150mm 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
- Stroke150 mm
- Cylinder portG1/4
- TypeDouble rod (BSAID)
- Enclasp portG1/8
- Rod threadM12×1.25
About the Airtac BSAID Clamp Cylinder BSAID40X150
The AirTAC BSAID40X150 is a double-acting ISO 15552 profile cylinder featuring a double-rod configuration and a spring-applied, air-released clamp-lock. It provides a static holding force of 900 N, gripping the rod securely at any position along its 150 mm travel. Because it is a double-rod actuator, it delivers equal thrust in both directions (528 N push and 528 N pull at 0.5 MPa). A critical distinction is that this 900 N holding force is entirely separate from the cylinder's thrust; you must size the clamp against the static load, not the pneumatic force.
The clamp mechanism uses a third G1/8 enclasp port to release the rod, operating within a 0.15-0.7 MPa pressure range. Remember that the variable air cushions at the stroke ends only decelerate the piston; the mechanical clamp is what actually holds the load. Furthermore, the clamp locks only after the rod has stopped, meaning it cannot brake a moving load, and it must be unlocked with balanced air pressures to prevent the rod from jumping abruptly.
Airtac BSAID Clamp Cylinder BSAID40X150 Technical Specifications
| Model | Airtac BSAID Clamp Cylinder BSAID40X150 |
|---|---|
| Series | BSAI ISO 15552 clamp-lock cylinder |
| Bore size | Ø40 mm |
| Stroke | 150 mm |
| Type | Double rod (BSAID), 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 | — |
Equal force both directions (double rod). 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 BSAID Clamp Cylinder BSAID40X150 Is Used
Mid-Stroke Vertical Hold
Locks a lifted load at any intermediate height along the vertical axis with 900 N of holding force, preventing drops during processing.
Power Loss Safety
The spring-applied clamp engages automatically anywhere in the 150 mm travel if air pressure is lost, securing the dual-side tooling instantly.
Machining Positioning
Holds the carbon steel rod rigidly in place during drilling or inspection, using the second rod end for a counterweight or guide.
Is the Airtac BSAID Clamp Cylinder BSAID40X150 the Right Clamp-Lock?
Choose this double-rod clamp-lock cylinder when an application requires holding a workpiece at an arbitrary mid-stroke position, unlike a SAIL model which only locks at the stroke end. If your application does not require mid-stroke holding, a plain SAID cylinder suffices. If you need higher holding capacity, stepping up to a 50 mm bore increases the static hold to 1400 N and the bidirectional thrust to 825 N at 0.5 MPa. Conversely, a 32 mm bore reduces the hold to 600 N and thrust to 345 N.
When replacing this unit, match the double-rod configuration, 40 mm bore, 150 mm stroke, and PT port threads. The BSAID mounting set includes Basic, FA, LB, TC, TCM1, and TCM2 (omitting FB, CA, CB, and CR). The standard carbon steel rods feature M12x1.25 threads, providing a robust interface for mounting. As this is a non-magnet model, position sensing via CMSE or DMSE switches is not supported without modification. Always ensure the cylinder has stopped and pressures are balanced before unlocking to avoid sudden rod movement.
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 BSAID Clamp Cylinder BSAID40X150 FAQ
The BSAID40X150 features a static holding force of 900 N. This bidirectional clamp locks the rod at any position along the 150 mm stroke, and this holding capacity is separate from the 528 N thrust generated by the cylinder itself.
The clamp locks only after the cylinder has stopped; it cannot brake a moving rod. It must be unlocked by applying air to the G1/8 enclasp port only after the pressures on both sides of the piston are balanced, otherwise the rod may move abruptly. Safety-critical applications require an independent external safety measure.
Related AirTAC Lock & Standard Cylinders
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