Airtac BSAID Clamp Cylinder BSAID50X50
The AirTAC Airtac BSAID Clamp Cylinder BSAID50X50 is a genuine double-acting ISO 15552 cylinder with a Ø50mm bore, 50mm 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
- Stroke50 mm
- Cylinder portG1/4
- TypeDouble rod (BSAID)
- Enclasp portG1/8
- Rod threadM16×1.5
About the Airtac BSAID Clamp Cylinder BSAID50X50
The AirTAC BSAID50X50 is a double-acting ISO 15552 profile cylinder featuring a rod extending from both ends and a built-in spring-applied, air-released clamp-lock. It secures the load at any position along the 50mm stroke, delivering a static holding force of 1400 N. Because it is a double-rod unit, the thrust is identical in both directions at 825 N (0.5 MPa). Remember that this holding force is a separate metric from thrust; you must size the clamp's 1400 N capacity against your actual static load, not the cylinder's push force.
A second rod is typically chosen to mount a workpiece on one end and a guide, counterweight, or position flag on the other, providing dual-side guidance and anti-rotation. The clamp mechanism uses a third G1/8 enclasp port—separate from the 1/4 cylinder ports—and requires balanced air pressure (0.15-0.7 MPa) to unlock safely. Note that the variable air cushion only decelerates the piston near stroke ends; the clamp is what actually holds the load.
Airtac BSAID Clamp Cylinder BSAID50X50 Technical Specifications
| Model | Airtac BSAID Clamp Cylinder BSAID50X50 |
|---|---|
| Series | BSAI ISO 15552 clamp-lock cylinder |
| Bore size | Ø50 mm |
| Stroke | 50 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 BSAID50X50 Is Used
Vertical Mid-Stroke Hold
Suspends a vertically lifted payload at any point along the travel path, securing the 1400 N load without relying on continuous air pressure.
Power Loss Safety
Engages the spring-applied clamp automatically during an air or power failure, freezing the double-rod assembly safely in its current position.
Machining Position Lock
Holds a dual-side workpiece rigidly for secondary processing or inspection, using the second rod for anti-rotation guidance.
Is the Airtac BSAID Clamp Cylinder BSAID50X50 the Right Clamp-Lock?
Step up to the 63mm bore if you need greater thrust (1402 N pull at 0.5 MPa) and a higher 2200 N holding force, or step down to the 32mm bore for lighter 345 N pull and 600 N hold. Choose this BSAID model over a stroke-end-only SAIL lock when you must freeze the load mid-travel. If you only need standard movement without mid-stroke holding, a plain SAID cylinder suffices. For replacement, match the double-rod configuration, 50mm bore, 50mm stroke, PT thread ports, and the BSAID mounting set (Basic, FA, LB, TC, TCM1, TCM2), which omits FB, CA, CB, and CR. Without a -S magnet, CMSE or DMSE sensors cannot be fitted.
Always apply the clamp only after the rod has completely stopped, as it cannot brake a moving load. Unlock the clamp with balanced pressures on both sides of the piston to prevent abrupt rod movement. For safety-critical applications, an additional independent safety measure is required.
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 BSAID50X50 FAQ
The clamp-lock provides a static holding force of 1400 N at any position along the stroke. This holding capacity is independent of the cylinder's 825 N thrust and only engages after the rod has stopped moving.
The clamp is spring-applied and air-released via a third G1/8 port. You must balance the air pressure on both sides of the piston before unlocking; otherwise, the rod can jump abruptly. It cannot brake a moving rod, so safety-critical loads need an independent measure.
Related AirTAC Lock & Standard Cylinders
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