Airtac BSAID Clamp Cylinder BSAID40X175S
The AirTAC Airtac BSAID Clamp Cylinder BSAID40X175S is a genuine double-acting ISO 15552 cylinder with a Ø40mm 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 900 N.
- BoreØ40 mm
- Stroke175 mm
- Cylinder portG1/4
- TypeDouble rod (BSAID)
- Enclasp portG1/8
- Rod threadM12×1.25
About the Airtac BSAID Clamp Cylinder BSAID40X175S
The AirTAC BSAID40X175-S is a double-acting ISO 15552 profile cylinder featuring a double-rod configuration and an integrated spring-applied, air-released clamp-lock. It secures the load at ANY position along the 175mm stroke, delivering a static holding force of 900 N. Because it is a double-rod actuator, the thrust is equal in both directions at 528 N (pull-side value at 0.5 MPa). It is crucial to distinguish this holding force from the cylinder thrust: the 900 N clamp rating dictates the static load capacity, whereas the 528 N thrust dictates the dynamic motion force.
This enclasp mechanism is bidirectional and locks the carbon steel rod securely once motion ceases. It requires a third G1/8 enclasp port to release the grip, operating strictly within a 0.15-0.7 MPa pressure range. The double-rod layout allows mounting a workpiece on one end and a guide or position flag on the opposite end, providing dual-side anti-rotation. Furthermore, the integrated variable air cushion only decelerates the piston near stroke ends; it is the mechanical clamp that truly sustains the load.
Airtac BSAID Clamp Cylinder BSAID40X175S Technical Specifications
| Model | Airtac BSAID Clamp Cylinder BSAID40X175S |
|---|---|
| Series | BSAI ISO 15552 clamp-lock cylinder |
| Bore size | Ø40 mm |
| Stroke | 175 mm |
| Type | Double rod (BSAID), double acting |
| Cylinder port | G1/4 |
| Rod thread | M12×1.25 |
| Lock type | Spring-applied, air-released clamp (any position) |
|---|---|
| Static holding force | 900 N |
| Enclasp / unlock port | G1/8 |
| Operating pressure | 0.15 – 0.7 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Max stroke | Up to 800 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 (Ø40 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa (max) | 880 N | — |
Equal force both directions (double rod). Rated to the 0.7 MPa operating maximum for this series. The clamp holding force (900 N) is separate from cylinder thrust. Size with a margin.
Where the Airtac BSAID Clamp Cylinder BSAID40X175S Is Used
Vertical Lift Hold
Holds an elevated workpiece at any intermediate height on a vertical axis, preventing gravity-driven drops during a power loss.
Machining Position Lock
Secures a dual-side guided fixture firmly in place during drilling or milling, using the 900 N clamp to resist cutting forces.
Mid-Stroke Safety Hold
Freezes the double-rod actuator instantly wherever it stops along the travel, providing a fail-safe hold without relying on air pressure.
Is the Airtac BSAID Clamp Cylinder BSAID40X175S the Right Clamp-Lock?
Select this double-rod model when your application requires equal push/pull thrust and anti-rotation guidance via a secondary rod end. If you need a higher holding capacity, stepping up to a 50 mm bore increases the clamp force to 1400 N and the thrust to 825 N. Choose this BSAID clamp-lock over a plain SAID when unpowered position retention is mandatory. Unlike a SAIL cylinder that only secures the load at stroke extremes, this enclasp locks anywhere. For replacements, match the 40 mm bore, 175 mm stroke, PT port threads, and the double-rod layout. The mounting set omits FB, CA, CB, and CR brackets, accepting only Basic, FA, LB, TC, TCM1, and TCM2. The -S magnet works with AirTAC CMSE reed and DMSE electronic sensors.
Remember that the clamp locks only after the cylinder has stopped; it cannot brake a moving rod. You must unlock the clamp with balanced air pressures on both piston sides to prevent abrupt rod jumps, and human-safety-critical holds require an independent external safety measure.
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 BSAID40X175S FAQ
The integrated clamp-lock provides a static holding force of 900 N. It locks the carbon steel rod at any position bidirectionally, but only after the cylinder has stopped moving.
The clamp is released by supplying air to the G1/8 enclasp port, but only after balancing pressures on both piston sides to prevent abrupt rod jumps. The BSAID is the double-rod version, offering equal thrust both ways and a second rod end for mounting guides, unlike the single-rod BSAI.
Related AirTAC Lock & Standard Cylinders
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