Airtac BSAID Clamp Cylinder BSAID125X150
The AirTAC Airtac BSAID Clamp Cylinder BSAID125X150 is a genuine double-acting ISO 15552 cylinder with a Ø125mm 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 8600 N.
- BoreØ125 mm
- Stroke150 mm
- Cylinder portG1/2
- TypeDouble rod (BSAID)
- Enclasp portG1/8
- Rod threadM27×2
About the Airtac BSAID Clamp Cylinder BSAID125X150
The AirTAC BSAID125X150 is a double-acting ISO 15552 profile cylinder featuring a double-rod layout and a spring-applied, air-released clamp-lock mechanism. It delivers an equal 5734 N of thrust in both directions at 0.5 MPa, while the integrated enclasp gripper provides a robust 8600 N static holding force. Buyers must distinguish between holding force and thrust: the 8600 N clamp rating is the static load capacity against the rod, entirely separate from the pneumatic thrust that moves the payload.
A rod extending from both ends allows you to mount a workpiece on one side and a counterweight, position flag, or guide on the opposite side for dual-side anti-rotation. This 125 mm bore model uses a substantial M27x2 rod thread and a 1/2 inch cylinder port, while a separate G1/8 enclasp port controls the unlock pressure. Note that the variable air cushion only decelerates the piston near stroke ends; the clamp itself is what secures the load. Operating pressure is 0.15-0.7 MPa.
Airtac BSAID Clamp Cylinder BSAID125X150 Technical Specifications
| Model | Airtac BSAID Clamp Cylinder BSAID125X150 |
|---|---|
| Series | BSAI ISO 15552 clamp-lock cylinder |
| Bore size | Ø125 mm |
| Stroke | 150 mm |
| Type | Double rod (BSAID), double acting |
| Cylinder port | G1/2 |
| Rod thread | M27×2 |
| Lock type | Spring-applied, air-released clamp (any position) |
|---|---|
| Static holding force | 8600 N |
| Enclasp / unlock port | G1/8 |
| Operating pressure | 0.15 – 0.7 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 500 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 (Ø125 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 (Ø125mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 6136 N | 5734 N |
| 0.7 MPa (max) | 8590 N | — |
Equal force both directions (double rod). Rated to the 0.7 MPa operating maximum for this series. The clamp holding force (8600 N) is separate from cylinder thrust. Size with a margin.
Where the Airtac BSAID Clamp Cylinder BSAID125X150 Is Used
Heavy Vertical Lifts
Holds a massive vertical payload at any point in the 150 mm travel with 8600 N of static grip, preventing sudden drops during air pressure loss.
Machining Fixture
Locks the double-rod assembly rigidly mid-stroke so a heavy workpiece remains completely immobilized for precision milling or inspection.
Dual-Side Tooling
Uses the second rod end to mount a counterweight or position flag while the primary side executes clamping, ensuring balanced anti-rotation guidance.
Is the Airtac BSAID Clamp Cylinder BSAID125X150 the Right Clamp-Lock?
Choose this BSAID125X150 when a heavy load requires dual-side guidance and absolute position holding mid-stroke; step down to the 100 mm bore if your application only needs 3681 N thrust and 5500 N holding capacity. This clamp-lock variant outperforms the SAIL series by gripping the rod at any position rather than just at stroke ends, whereas a plain SAID suffices if live air pressure continuously supports the load. The clamp locks only after the rod stops and cannot brake a moving payload. Release requires balanced air pressure on both piston sides, or the rod may jump abruptly; safety-critical applications need an independent external measure. Replacement requires a double-rod 125 mm bore, 150 mm stroke, PT port threads, and the BSAID mounting set (Basic, FA, LB, TC, TCM1, TCM2).
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 BSAID125X150 FAQ
The integrated enclasp clamp provides a static holding force of 8600 N. It grips the rod bidirectionally at any position along the 150 mm stroke, but it only engages after the cylinder has stopped moving.
The clamp unlocks via a separate G1/8 enclasp port, but only when air pressures on both piston sides are balanced. Without balanced pressure, the rod can jump abruptly upon release, so an independent safety measure is required for human safety.
Related AirTAC Lock & Standard Cylinders
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