Airtac BSAID Clamp Cylinder BSAID50X75S
The AirTAC Airtac BSAID Clamp Cylinder BSAID50X75S is a genuine double-acting ISO 15552 cylinder with a Ø50mm bore, 75mm 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 1400 N.
- BoreØ50 mm
- Stroke75 mm
- Cylinder portG1/4
- TypeDouble rod (BSAID)
- Enclasp portG1/8
- Rod threadM16×1.5
About the Airtac BSAID Clamp Cylinder BSAID50X75S
The AirTAC BSAID50X75-S 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 1400 N at any position along its 75 mm travel. Because it is a double-rod unit, the output force is equal in both directions at 825 N (0.5 MPa), and the extending rod from the rear end allows for mounting a counterweight, a position flag, or dual-side guidance to prevent rotation.
It is vital to distinguish this 1400 N holding force from the cylinder's 825 N thrust; the clamp mechanism secures the static load, while thrust drives the motion. The lock engages only after the piston has completely stopped, meaning it cannot brake a moving rod. Release requires balanced air pressure across the piston via the dedicated G1/8 enclasp port, preventing abrupt rod jumps. The variable air cushion at the ends merely decelerates the travel and does not contribute to holding the load.
Airtac BSAID Clamp Cylinder BSAID50X75S Technical Specifications
| Model | Airtac BSAID Clamp Cylinder BSAID50X75S |
|---|---|
| Series | BSAI ISO 15552 clamp-lock cylinder |
| Bore size | Ø50 mm |
| Stroke | 75 mm |
| Type | Double rod (BSAID), double acting |
| Cylinder port | G1/4 |
| Rod thread | M16×1.5 |
| Lock type | Spring-applied, air-released clamp (any position) |
|---|---|
| Static holding force | 1400 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 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 (Ø50 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa (max) | 1374 N | — |
Equal force both directions (double rod). Rated to the 0.7 MPa operating maximum for this series. The clamp holding force (1400 N) is separate from cylinder thrust. Size with a margin.
Where the Airtac BSAID Clamp Cylinder BSAID50X75S Is Used
Vertical Load Holding
Secures elevated loads at any point in the stroke, preventing sudden drops during air pressure loss without relying on end-stop cushions.
Machining Position Hold
Locks the rod rigidly in place for secondary machining or inspection processes, using the opposite rod end for a guide or flag.
Power Failure Safety
The spring-applied clamp engages automatically upon loss of air pressure, safely freezing the dual-rod assembly exactly where it stopped.
Is the Airtac BSAID Clamp Cylinder BSAID50X75S the Right Clamp-Lock?
Choose this double-rod clamp-lock model when a workpiece requires secure mid-stroke positioning alongside dual-side guidance or a secondary attachment on the opposite rod end. If your load only needs securing at the stroke extremes, a simpler SAIL cylinder suffices, while a plain SAID is adequate if no holding mechanism is required. For safety-critical applications, remember that this clamp locks only after stopping and requires an independent safety measure for human protection.
When replacing a unit, match the 50 mm bore, 75 mm stroke, and PT port threads. The double-rod design restricts mounting options to Basic, FA, LB, TC, TCM1, and TCM2. The included -S magnet pairs correctly with AirTAC CMSE reed and DMSE solid-state sensors for position feedback. The 20 mm carbon steel rod and M16x1.5 thread offer robust side-load resistance for this short stroke.
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 BSAID50X75S FAQ
The clamp-lock provides a static holding force of 1400 N. It engages via a spring mechanism to hold the double-rod piston securely at any position along the stroke, independent of the cylinder's 825 N thrust.
The lock only engages after the rod stops and cannot brake moving loads. To release it safely, air pressure must be balanced across both piston sides via the G1/8 enclasp port, preventing the rod from jumping abruptly upon release.
Related AirTAC Lock & Standard Cylinders
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