Airtac BSAID Clamp Cylinder BSAID125X175
The AirTAC Airtac BSAID Clamp Cylinder BSAID125X175 is a genuine double-acting ISO 15552 cylinder with a Ø125mm bore, 175mm 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
- Stroke175 mm
- Cylinder portG1/2
- TypeDouble rod (BSAID)
- Enclasp portG1/8
- Rod threadM27×2
About the Airtac BSAID Clamp Cylinder BSAID125X175
The AirTAC BSAID125X175 is a double-acting ISO 15552 profile cylinder featuring a double-rod configuration and a built-in clamp-lock mechanism. A spring-applied, air-released gripper secures the 32 mm carbon steel rod at any position along its 175 mm stroke, delivering a static holding force of 8600 N. Because it is a double-rod design, the thrust is identical in both directions at 5734 N (pull value at 0.5 MPa), and the rod extending from both ends allows you to mount a workpiece on one side and a guide or position flag on the other for dual-side guidance.
It is vital to distinguish between this 8600 N static holding force and the 5734 N thrust: the clamp holds the static load without live pressure, while thrust drives the movement. The clamp locks only after the cylinder has stopped moving—it cannot brake a rod in motion. Furthermore, the variable air cushion at the stroke ends only decelerates the piston; it does not hold the load. Unlocking requires balanced air pressures on both piston sides via the dedicated G1/8 enclasp port, or the rod may jump abruptly.
Airtac BSAID Clamp Cylinder BSAID125X175 Technical Specifications
| Model | Airtac BSAID Clamp Cylinder BSAID125X175 |
|---|---|
| Series | BSAI ISO 15552 clamp-lock cylinder |
| Bore size | Ø125 mm |
| Stroke | 175 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 BSAID125X175 Is Used
Vertical Load Holding
Locks a heavy vertical workpiece securely at any point in the 175 mm travel, preventing gravity-driven drops during a sudden air pressure loss.
Machining Position Hold
Clamps a dual-sided fixture rigidly in place for machining or inspection operations, ensuring zero unwanted movement without relying on live air pressure.
Dual-Side Tooling Mount
Utilizes the rod extending from both ends to mount a primary work tool on one side and a counterweight or anti-rotation guide on the opposite end.
Is the Airtac BSAID Clamp Cylinder BSAID125X175 the Right Clamp-Lock?
Step down to the 100 mm bore if your application requires less thrust (3681 N pull at 0.5 MPa) and a lower 5500 N holding capacity, or step up if you need the absolute maximum holding power. Choose this BSAID clamp-lock over a plain SAID double-rod cylinder when unpowered mid-stroke position holding is required, and over a SAIL cylinder when you need to lock anywhere along the travel rather than only at the stroke ends. For safety-critical loads, always add an independent mechanical safety measure, as the clamp is not a moving-rod brake.
This BSAID125X175 replacement features a 125 mm bore, 175 mm stroke, PT tapered ports (1/2 inch cylinder port, G1/8 enclasp port), and a 32 mm rod with an M27x2 thread. The robust rod diameter handles high side loads, though external guidance is recommended for long strokes. The double-rod design omits the FB, CA, CB, and CR mountings, accepting only Basic, FA, LB, TC, TCM1, and TCM2 brackets. Without a -S magnet, it will not support CMSE or DMSE 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 BSAID125X175 FAQ
The built-in spring-applied, air-released clamp-lock provides a static holding force of 8600 N. It secures the double-rod at any position along the stroke, but only after the cylinder has stopped moving; it cannot brake a rod in motion.
The clamp is released by applying 0.15-0.7 MPa of air pressure to the dedicated G1/8 enclasp port. You must balance the air pressures on both sides of the piston before unlocking, otherwise the rod can move abruptly and cause a hazard.
Related AirTAC Lock & Standard Cylinders
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