Airtac BSAID Clamp Cylinder BSAID125X100
The AirTAC Airtac BSAID Clamp Cylinder BSAID125X100 is a genuine double-acting ISO 15552 cylinder with a Ø125mm bore, 100mm 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
- Stroke100 mm
- Cylinder portG1/2
- TypeDouble rod (BSAID)
- Enclasp portG1/8
- Rod threadM27×2
About the Airtac BSAID Clamp Cylinder BSAID125X100
The AirTAC BSAID125X100 is a double-acting ISO 15552 profile cylinder featuring a double-rod configuration and a built-in spring-applied, air-released clamp-lock. It provides a static holding force of 8600 N, gripping the rod securely at any position along its 100 mm stroke. Because it is a double-rod design, the thrust is identical in both directions at 5734 N at 0.5 MPa. A crucial distinction is that this 8600 N holding force is entirely separate from the cylinder's 5734 N thrust; you must size the clamp's holding capacity against your static load, not the pneumatic push force.
This enclasp mechanism requires a third G1/8 pneumatic port to release the lock, operating within a 0.15-0.7 MPa pressure range. The double-rod layout serves a specific mechanical purpose: you can mount the primary workpiece on one end while attaching a guide, counterweight, or position flag to the opposite end, achieving dual-side guidance and anti-rotation. Remember that the variable air cushions only decelerate the piston near stroke ends; the clamp mechanism itself is what holds the load firmly in place.
Airtac BSAID Clamp Cylinder BSAID125X100 Technical Specifications
| Model | Airtac BSAID Clamp Cylinder BSAID125X100 |
|---|---|
| Series | BSAI ISO 15552 clamp-lock cylinder |
| Bore size | Ø125 mm |
| Stroke | 100 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 BSAID125X100 Is Used
Vertical Load Holding
Freezes a heavy vertical platform at any height using 8600 N of holding force, preventing sudden drops if air pressure is lost.
Machining Position Hold
Locks the dual rods rigidly in place during a machining or inspection process, absorbing process loads without relying on live air pressure.
Power Failure Safety
The spring-applied clamp engages instantly upon air loss, securing the guided workpiece exactly where it stopped along the 100 mm stroke.
Is the Airtac BSAID Clamp Cylinder BSAID125X100 the Right Clamp-Lock?
Choose this 125 mm bore model when an application demands substantial load retention mid-stroke, stepping up from a 100 mm bore that offers 3681 N thrust and 5500 N holding force. Select BSAID over a stroke-end-only SAIL cylinder when you need the rod to freeze at any point in its travel, not just at the extremes. If you simply need to move a load without holding it mid-travel, a plain SAID cylinder is sufficient. For replacement, verify the 125 mm bore, 100 mm stroke, PT port threads, and the double-rod layout. The mounting set omits FB, CA, CB, and CR, accepting only Basic, FA, LB, TC, TCM1, and TCM2 brackets. The robust 32 mm carbon steel rod and M27x2 thread handle high side loads well.
Implement the clamp safely by ensuring the cylinder has completely stopped before engaging the lock, as it cannot brake a moving rod. Furthermore, unlock the clamp only when air pressures on both sides of the piston are balanced; otherwise, the rod may jump abruptly. For human-safety-critical applications, always add an independent mechanical safety measure. Note that without the -S magnet option, this unit cannot host CMSE reed or 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 BSAID125X100 FAQ
The clamp-lock provides a static holding force of 8600 N. It is spring-applied and air-released, meaning it grips the rod securely at any position along the stroke without requiring continuous live air pressure.
The clamp locks only after the cylinder has stopped moving; it cannot brake a moving rod. To unlock it safely, you must balance the air pressures on both sides of the piston via the third G1/8 release port, otherwise the rod may jump. Safety-critical loads require an independent backup measure.
Related AirTAC Lock & Standard Cylinders
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