Airtac BSAID Clamp Cylinder BSAID40X150S
The AirTAC Airtac BSAID Clamp Cylinder BSAID40X150S 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 BSAID40X150S
The AirTAC BSAID40X150-S is a double-acting ISO 15552 profile cylinder featuring a rod out both ends and an integrated spring-applied, air-released clamp-lock. It delivers an equal thrust of 528 N in both directions at 0.5 MPa. A defining trait of this enclasp mechanism is its ability to lock the piston at ANY position along the 150 mm travel, providing a static holding force of 900 N. You must size this holding force against your static load, as the clamp holding capacity is a distinct quantity separate from the cylinder's push or pull thrust.
This unit includes a -S magnet for precise position sensing via CMSE reed or DMSE electronic solid-state switches. The double-rod architecture is specifically chosen so you can mount a workpiece on one end and a guide, counterweight, or position flag on the other, achieving dual-side anti-rotation. Note that the variable air cushion only decelerates the piston near stroke end; the mechanical clamp is what actually secures the load. Furthermore, the clamp requires a third G1/8 enclasp port to release, operating within a balanced 0.15-0.7 MPa pressure range.
Airtac BSAID Clamp Cylinder BSAID40X150S Technical Specifications
| Model | Airtac BSAID Clamp Cylinder BSAID40X150S |
|---|---|
| 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 BSAID40X150S Is Used
Vertical Axis Intermediate Hold
Locks a lifted payload securely at any point along the 150 mm vertical travel to prevent gravity-induced dropping during power loss.
Machining Position Fixture
Uses the double-rod design to mount a machining fixture on one end and an anti-rotation guide on the other, holding the part rigidly with 900 N of clamping force.
Emergency Safety Stop
Secures the mechanism instantly wherever it stops in the stroke, providing a reliable mechanical hold until balanced air pressure is restored.
Is the Airtac BSAID Clamp Cylinder BSAID40X150S the Right Clamp-Lock?
Select this double-rod model when your application demands equal bi-directional force and multi-axis guidance alongside intermediate position holding. If you only need end-of-stroke locking, a plain SAIL cylinder suffices; if no lock is required, a standard SAID is lighter. To adjust power, stepping down to a 32 mm bore yields 345 N thrust and 600 N holding force, while stepping up to a 50 mm bore provides 825 N thrust and 1400 N holding force. The 16 mm rod and M12x1.25 thread offer robust side-load capacity, but for any stroke exceeding 300 mm, always add an external guide.
When specifying a replacement, match the double-rod configuration, 40 mm bore, 150 mm stroke, and PT tapered ports. The enclasp unlock port is G1/8. Ensure you select the correct double-rod mounting set: Basic, FA, LB, TC, TCM1, or TCM2, as BSAID omits the FB, CA, CB, and CR brackets. Remember that the clamp locks only after the rod has stopped moving—it cannot brake a dynamic load. It must be unlocked with balanced air pressures on both sides of the piston, or the rod may jump abruptly; safety-critical applications require an additional independent safety measure.
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 BSAID40X150S FAQ
The BSAID40X150-S provides a static holding force of 900 N and can lock the rod at any position along the 150 mm stroke. This bidirectional clamp is spring-applied and air-released, meaning it holds the load securely without requiring continuous live air pressure.
The clamp cannot brake a moving rod; it only locks after the cylinder has stopped. To release the lock safely, air pressures on both sides of the piston must be balanced. If unlocked under unbalanced pressure, the rod can move abruptly, so an independent safety measure is required for human-safety applications.
Related AirTAC Lock & Standard Cylinders
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