Airtac BSAID Clamp Cylinder BSAID125X160S
The AirTAC Airtac BSAID Clamp Cylinder BSAID125X160S 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 BSAID125X160S
The AirTAC BSAID125X160-S is a double-acting ISO 15552 profile cylinder featuring a double-rod configuration and a built-in spring-applied, air-released clamp-lock. Because it is a double-rod unit, its thrust is identical in both directions at 5734 N (0.5 MPa), and the rod extending from both ends allows you to mount a workpiece on one side and a guide, counterweight, or position flag on the opposite end for dual-side anti-rotation. The integrated enclasp mechanism provides a massive 8600 N static holding force, gripping the rod securely at any position along its 160 mm travel. It is crucial to distinguish this holding force from the cylinder's 5734 N thrust—the 8600 N clamp rating is what resists the static load when air pressure is removed, so you must size the clamp force against your load, not the thrust.
This model includes a -S magnet for precise position sensing with AirTAC CMSE (reed) and DMSE (solid-state) switches fitted into the dual-side sensor grooves. The clamp operates via a dedicated G1/8 enclasp port, separate from the 1/2 cylinder air ports, requiring 0.15-0.7 MPa to release the spring-driven grip. Remember that the variable air cushion only decelerates the piston near stroke ends; it is the mechanical clamp that holds the load. Furthermore, the clamp locks only after the rod has stopped moving—it cannot brake a traveling rod—and it must be unlocked with balanced pressures on both piston sides to prevent the rod from jumping abruptly upon release.
Airtac BSAID Clamp Cylinder BSAID125X160S Technical Specifications
| Model | Airtac BSAID Clamp Cylinder BSAID125X160S |
|---|---|
| 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 BSAID125X160S Is Used
Vertical Load Holding
Secures heavy vertical lifting stages at any point in the 160 mm travel, providing 8600 N of holding force during power loss to prevent gravity-driven drops.
Machining Position Lock
Locks a dual-sided workpiece fixture rigidly in place for machining or inspection, using the double-rod design to maintain equal force and prevent deflection.
Dual-Side Tooling Mount
Mounts the primary work tool on one rod end and a counterweight or position flag on the opposite end, ensuring balanced guidance and anti-rotation.
Is the Airtac BSAID Clamp Cylinder BSAID125X160S the Right Clamp-Lock?
Select the 125 mm bore when your application demands high force and extreme holding capacity, stepping up from the 100 mm bore which offers 3681 N thrust and 5500 N holding force. If your load only needs to be held at the stroke ends rather than at any intermediate position, a plain SAI or SAIL cylinder would suffice, but the BSAID125X160-S is chosen specifically for its bidirectional, lock-anywhere capability along the travel. For safety-critical operations, note that the clamp locks only after the cylinder stops and requires balanced pressure to unlock safely; human-safety-dependent applications still require an independent external safety measure. As a direct replacement, match the double-rod design, 125 mm bore, 160 mm stroke, PT tapered ports, and the -S magnet. The BSAID accepts Basic, FA, LB, TC, TCM1, and TCM2 mountings (omitting FB, CA, CB, and CR due to the double-rod architecture). The M27 rod thread provides excellent rigidity, though for any stroke at or above 300 mm, an external guide is recommended to manage side loads.
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 BSAID125X160S FAQ
It provides a static holding force of 8600 N and locks at any position along the 160 mm stroke. Because it is a double-rod BSAID model, the cylinder's thrust is equal in both directions (5734 N at 0.5 MPa), and the clamp grips the rod bidirectionally.
The spring-applied clamp locks the rod only after it has stopped moving; it cannot brake a moving load. To unlock it safely, you must apply 0.15-0.7 MPa to the G1/8 enclasp port while balancing pressures on both sides of the piston, otherwise the rod may jump abruptly upon release.
Related AirTAC Lock & Standard Cylinders
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