Airtac BSAID Clamp Cylinder BSAID80X900
The AirTAC Airtac BSAID Clamp Cylinder BSAID80X900 is a genuine double-acting ISO 15552 cylinder with a Ø80mm bore, 900mm 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 3600 N.
- BoreØ80 mm
- Stroke900 mm
- Cylinder portG3/8
- TypeDouble rod (BSAID)
- Enclasp portG1/8
- Rod threadM20×1.5
About the Airtac BSAID Clamp Cylinder BSAID80X900
The AirTAC BSAID80X900 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 point along its 900 mm stroke with a static holding force of 3600 N. Because it is a double-rod unit, the thrust is equal in both directions at 2268 N (0.5 MPa), and the second rod allows you to mount a counterweight, position flag, or dual-side guidance tool on the opposite end. A critical design distinction is that this 3600 N holding force is entirely separate from the cylinder thrust; you must size the clamp capacity against the static load weight, not the pneumatic push force.
This bidirectional enclasp locks the rod only after the cylinder has stopped, meaning it cannot brake a moving load. The lock releases via a third G1/8 enclasp port, which requires balanced air pressure on both piston sides to prevent the rod from jumping abruptly upon release. Remember that the variable air cushions only decelerate the piston near the stroke ends; the mechanical clamp is the sole device holding the load. For safety-critical human-adjacent applications, an additional independent safety measure is required.
Airtac BSAID Clamp Cylinder BSAID80X900 Technical Specifications
| Model | Airtac BSAID Clamp Cylinder BSAID80X900 |
|---|---|
| Series | BSAI ISO 15552 clamp-lock cylinder |
| Bore size | Ø80 mm |
| Stroke | 900 mm |
| Type | Double rod (BSAID), double acting |
| Cylinder port | G3/8 |
| Rod thread | M20×1.5 |
| Lock type | Spring-applied, air-released clamp (any position) |
|---|---|
| Static holding force | 3600 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 (Ø80 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 (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa (max) | 3519 N | — |
Equal force both directions (double rod). Rated to the 0.7 MPa operating maximum for this series. The clamp holding force (3600 N) is separate from cylinder thrust. Size with a margin.
Where the Airtac BSAID Clamp Cylinder BSAID80X900 Is Used
Vertical Load Holding
Secures heavy vertical lifting stages at any intermediate height with 3600 N of holding force, preventing sudden drops when air supply is removed.
Machining Position Lock
Holds a dual-side workpiece rigidly at a precise mid-stroke coordinate for machining or inspection, utilizing the second rod for a counterweight.
Emergency Power-Loss Hold
Spring-applied clamp engages instantly to freeze the 900 mm stroke position during sudden pneumatic pressure loss, requiring an independent safety measure for human safety.
Is the Airtac BSAID Clamp Cylinder BSAID80X900 the Right Clamp-Lock?
Choose this 80 mm bore when a 63 mm bore (1402 N pull thrust, 2200 N holding force) lacks the capacity to hold your load, and a 100 mm bore (3681 N pull thrust, 5500 N holding force) is oversized. Select the BSAID double-rod variant over the single-rod BSAI when your application requires equal force both directions and dual-side workpiece mounting. Choose this clamp-lock model over a plain SAID when you need to hold a position mid-stroke during power loss, whereas a standard SAID suffices if stopping only requires end-of-stroke cushions.
For this 900 mm stroke, the long unsupported rod demands an external guide to prevent excessive side-loading, despite the robust 25 mm rod and M20x1.5 thread. Operating pressure is 0.15-0.7 MPa. This unit uses PT tapered ports (3/8 cylinder, G1/8 enclasp) and accepts Basic, FA, LB, TC, TCM1, and TCM2 mounts (omitting FB, CA, CB, CR). It lacks a magnet (-S) for 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 BSAID80X900 FAQ
The static holding force is 3600 N. The bidirectional clamp locks the rod at any position along the 900 mm stroke, but only after the cylinder has stopped moving; it cannot brake a moving rod.
The clamp releases via a third G1/8 enclasp port, requiring balanced air pressure on both piston sides to prevent the rod from jumping. The double-rod design provides equal force both ways and allows mounting a guide or position flag on the opposite end.
Related AirTAC Lock & Standard Cylinders
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