Airtac BSAID Clamp Cylinder BSAID125X600
The AirTAC Airtac BSAID Clamp Cylinder BSAID125X600 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 BSAID125X600
The AirTAC BSAID125X600 is a double-acting ISO 15552 profile cylinder featuring a double-rod layout and a built-in clamp-lock mechanism. A spring-applied, air-released gripper secures the piston rod at any position along its 600mm travel, delivering a static holding force of 8600 N. Because it is a double-rod design, the thrust is equal in both directions at 5734 N (at 0.5 MPa), and the extending rod on the opposite end allows you to mount a guide, counterweight, or position flag for dual-side anti-rotation. The clamp holding force is a distinct quantity from the cylinder thrust; you must size the 8600 N holding capacity against your static load, not the 5734 N drive force.
This enclasp mechanism requires a third G1/8 port to release the lock, operating within a 0.15-0.7 MPa pressure range. It is vital to understand that the variable air cushion only decelerates the piston near the stroke ends; the clamp is what actually holds the load. The clamp locks only after the cylinder has stopped moving—it cannot brake a moving rod—and it must be unlocked with balanced air pressures on both sides of the piston to prevent the rod from jumping abruptly upon release.
Airtac BSAID Clamp Cylinder BSAID125X600 Technical Specifications
| Model | Airtac BSAID Clamp Cylinder BSAID125X600 |
|---|---|
| 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 BSAID125X600 Is Used
Vertical Load Holding
Locks a heavy vertical lift at any point in the 600mm travel with 8600 N of holding force, preventing gravity-driven drops during a power loss.
Machining Position Hold
Secures a dual-side workpiece or fixture rigidly in place for machining operations, using the second rod end for a counterweight or guide.
Emergency Safety Stop
Provides a bidirectional static hold anywhere along the stroke to freeze motion safely when air supply is interrupted, acting as a fail-safe clamp.
Is the Airtac BSAID Clamp Cylinder BSAID125X600 the Right Clamp-Lock?
Choose this 125mm bore when an application demands high equal force (5734 N both ways) and heavy mid-stroke holding. If you do not need bidirectional force, stepping down to a 100mm bore (3681 N pull thrust, 5500 N holding force) saves space and air. A plain SAID cylinder suffices if you only need to move a load without holding it unpowered, while a SAIL cylinder only locks at stroke ends; the BSAID is required when you must enclasp the rod at any intermediate point. At 600mm of stroke, the 32mm rod and M27x2 thread handle substantial side loads, but an external guide is still recommended for long unsupported strokes.
For replacements, match the double-rod configuration, 125mm bore, 600mm stroke, and PT tapered ports. The BSAID mounting set omits FB, CA, CB, and CR brackets, accepting only Basic, FA, LB, TC, TCM1, and TCM2. This unit has no magnet (-S not specified), so CMSE reed or DMSE electronic sensors cannot be used without a different rod assembly. Always ensure the cylinder has stopped and pressures are balanced before unlocking the clamp, and add an independent safety measure if human safety depends on the hold.
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 BSAID125X600 FAQ
The static holding force is 8600 N. This clamp force is separate from the cylinder's 5734 N drive thrust and holds the double rod bidirectionally at any position along the 600mm stroke.
No, the clamp locks only after the cylinder has stopped; it is not a dynamic brake. It must be unlocked with balanced air pressures on both sides via the G1/8 port, or the rod may jump. An independent safety measure is required for human-safety loads.
Related AirTAC Lock & Standard Cylinders
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