Airtac BSAID Clamp Cylinder BSAID125X160
The AirTAC Airtac BSAID Clamp Cylinder BSAID125X160 is a genuine double-acting ISO 15552 cylinder with a Ø125mm 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 8600 N.
- BoreØ125 mm
- Stroke160 mm
- Cylinder portG1/2
- TypeDouble rod (BSAID)
- Enclasp portG1/8
- Rod threadM27×2
About the Airtac BSAID Clamp Cylinder BSAID125X160
The AirTAC BSAID125X160 is a double-acting ISO 15552 profile cylinder featuring a rod extending from both ends and a spring-applied, air-released clamp-lock mechanism. It provides a static holding force of 8600 N at any position along its 160 mm stroke. Because it is a double-rod design, the thrust is equal in both directions at 5734 N (0.5 MPa). It is vital to distinguish this holding force from cylinder thrust: the 8600 N clamp rating resists the static load, whereas thrust dictates motion capability.
The dual-rod architecture allows you to mount a workpiece on one end and a guide, counterweight, or position flag on the opposite end, providing dual-side guidance and anti-rotation. A third G1/8 enclasp port controls the unlock function, requiring balanced air pressure on both sides of the piston to prevent the rod from jumping abruptly upon release. Note that the variable air cushion only decelerates the piston near stroke end; the clamp is the true holding device.
Airtac BSAID Clamp Cylinder BSAID125X160 Technical Specifications
| Model | Airtac BSAID Clamp Cylinder BSAID125X160 |
|---|---|
| Series | BSAI ISO 15552 clamp-lock cylinder |
| Bore size | Ø125 mm |
| Stroke | 160 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 BSAID125X160 Is Used
Vertical Load Holding
Secures heavy vertical loads at any point in the travel path, preventing sudden drops during a power loss event.
Machining Position Lock
Holds a dual-side workpiece fixture perfectly stationary against cutting forces during secondary milling operations.
Dual-Tool Transfer
Uses the second rod end for a counterweight or position flag, maintaining balanced anti-rotation while clamped mid-cycle.
Is the Airtac BSAID Clamp Cylinder BSAID125X160 the Right Clamp-Lock?
Choose this 125 mm bore when an application demands substantial mid-stroke holding, stepping up from the 80 mm bore which offers 2268 N of pull thrust and a 3600 N holding force. Select the BSAID double-rod configuration over the single-rod BSAI when dual-side guidance or mounting a secondary tool is required. Alternatively, a plain SAID suffices if locking is only needed at stroke ends, while the SAIL series provides stroke-end locking for single-rod needs.
For replacements, match the double-rod format, 125 mm bore, 160 mm stroke, PT tapered ports, and the BSAID mounting set (Basic, FA, LB, TC, TCM1, TCM2), which omits the FB, CA, CB, and CR brackets. The robust 32 mm rod and M27x2 thread handle high side loads, but always incorporate an external guide for long strokes. Remember: the clamp locks only after the rod stops moving and is not a dynamic brake; safety-critical applications require an independent backup 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 BSAID125X160 FAQ
The clamp-lock provides a static holding force of 8600 N. It engages via spring pressure to hold the load at any position along the stroke, operating bidirectionally.
The clamp unlocks only when air pressure is balanced on both sides of the piston after the rod has stopped. Releasing it unbalanced can cause the rod to jump abruptly. It cannot brake a moving rod, so safety-critical loads need an independent measure.
Related AirTAC Lock & Standard Cylinders
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