Airtac BSAID Clamp Cylinder BSAID125X600S
The AirTAC Airtac BSAID Clamp Cylinder BSAID125X600S is a genuine double-acting ISO 15552 cylinder with a Ø125mm bore, 600mm 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
- Stroke600 mm
- Cylinder portG1/2
- TypeDouble rod (BSAID)
- Enclasp portG1/8
- Rod threadM27×2
About the Airtac BSAID Clamp Cylinder BSAID125X600S
The AirTAC BSAID125X600-S is a double-acting ISO 15552 profile cylinder featuring a double-rod configuration and an integrated spring-applied, air-released clamp-lock. It provides a massive 8600 N static holding force, gripping the rod securely at any position along its 600 mm travel. Because it is a double-rod design, the thrust is equal in both directions, delivering 5734 N of push and pull force at 0.5 MPa. A crucial distinction is that this 8600 N clamp holding force is entirely separate from the cylinder thrust; you must size the holding capacity against the static load weight, not the pneumatic drive force.
The clamp mechanism locks bidirectionally after the cylinder has stopped, meaning it cannot brake a moving rod. Unlocking requires balanced air pressure on both sides of the piston to prevent the rod from jumping abruptly. This model uses a 1/2 inch PT cylinder port alongside a dedicated G1/8 enclasp port for the unlock function. Furthermore, the variable air cushions only decelerate the piston near the stroke ends; the mechanical clamp is the sole device responsible for holding the load in place.
Airtac BSAID Clamp Cylinder BSAID125X600S Technical Specifications
| Model | Airtac BSAID Clamp Cylinder BSAID125X600S |
|---|---|
| Series | BSAI ISO 15552 clamp-lock cylinder |
| Bore size | Ø125 mm |
| Stroke | 600 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 BSAID125X600S Is Used
Machining Position Hold
Secures heavy castings at an exact intermediate point along the 600 mm travel for multi-axis machining, using the 8600 N clamp to resist cutting forces without live air pressure.
Vertical Load Suspension
Holds a massive vertical payload stationary at any height in the stroke, utilizing the double-rod design to mount a counterweight on the opposing end for balance.
Power Loss Safety
Prevents a 5734 N load from dropping instantly during an air supply failure, as the spring-applied clamp engages automatically the moment the cylinder stops moving.
Is the Airtac BSAID Clamp Cylinder BSAID125X600S the Right Clamp-Lock?
Choose this BSAID125X600-S when an application requires positioning a workpiece on one rod end while mounting a guide, counterweight, or position flag on the opposite end, ensuring dual-side guidance and anti-rotation. If you do not need a rod extending from both sides, a single-rod BSAI125X600 provides the same 8600 N holding force. For lighter vertical axes, stepping down to a 100 mm bore drops the holding force to 5500 N and the equal thrust to 3681 N. This clamp-lock excels over a SAIL cylinder because it holds at any position, whereas SAIL only grips at the stroke end. If no intermediate holding is needed, a plain SAID cylinder suffices.
Safety is paramount: the clamp engages only after the rod stops, so human-safety applications require an additional independent safety measure. The rod must be unlocked with balanced pressures to avoid sudden shifts. Featuring a robust 32 mm carbon steel rod and an M27x2 thread, this cylinder handles significant side loads, but at 600 mm of stroke, an external guide is highly recommended to prevent bending. It accepts Basic, FA, LB, TC, TCM1, and TCM2 mounts, uses PT ports, and the included -S magnet works with AirTAC CMSE (reed) and DMSE (electronic) sensors.
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 BSAID125X600S FAQ
The 8600 N static holding force is the mechanical grip of the clamp-lock, which is completely separate from the 5734 N pneumatic thrust the cylinder generates at 0.5 MPa. You must size the holding force against the static load weight, not the thrust.
No, the clamp locks only after the cylinder has stopped moving; it cannot brake a moving rod. Additionally, it must be unlocked with balanced air pressures on both sides to prevent the rod from jumping, and human-safety applications require an independent safety measure.
Related AirTAC Lock & Standard Cylinders
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