Airtac BSAID Clamp Cylinder BSAID80X350
The AirTAC Airtac BSAID Clamp Cylinder BSAID80X350 is a genuine double-acting ISO 15552 cylinder with a Ø80mm bore, 350mm 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
- Stroke350 mm
- Cylinder portG3/8
- TypeDouble rod (BSAID)
- Enclasp portG1/8
- Rod threadM20×1.5
About the Airtac BSAID Clamp Cylinder BSAID80X350
The AirTAC BSAID80X350 is a double-acting ISO 15552 profile cylinder featuring a rod out both ends and a built-in spring-applied, air-released clamp-lock. It delivers a bidirectional holding force of 3600 N at any position along its 350 mm travel. Because it is a double-rod unit, it generates equal thrust in both directions—2268 N at 0.5 MPa—making it ideal for mounting a workpiece on one end and a counterweight or position flag on the other. Note that this static holding force is distinct from the cylinder's thrust; you must size the clamp's 3600 N capacity against the static load, not the pneumatic push force.
The clamp mechanism operates via a third G1/8 enclasp port and requires 0.15-0.7 MPa to unlock. It is critical to understand that the variable air cushion only decelerates the piston near stroke end; the mechanical clamp is what actually secures the load. Furthermore, the clamp locks only after the rod has stopped—it cannot brake a moving rod—and it must be released with balanced air pressures to prevent the rod from jumping abruptly.
Airtac BSAID Clamp Cylinder BSAID80X350 Technical Specifications
| Model | Airtac BSAID Clamp Cylinder BSAID80X350 |
|---|---|
| Series | BSAI ISO 15552 clamp-lock cylinder |
| Bore size | Ø80 mm |
| Stroke | 350 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 BSAID80X350 Is Used
Vertical Lift Holding
Holds a suspended load at any point along the 350 mm vertical travel to prevent gravity drops during operation.
Machining Position Lock
Secures a dual-sided workpiece fixture rigidly in place during milling or drilling without relying on live air pressure.
Power Loss Safety
The spring-applied clamp engages automatically anywhere in the stroke if air pressure drops, safely freezing the rod.
Is the Airtac BSAID Clamp Cylinder BSAID80X350 the Right Clamp-Lock?
Choose this 80 mm bore double-rod model when you need equal force both ways and mid-stroke holding that exceeds the 1400 N capacity of a 50 mm bore. If your load is lighter, a 63 mm bore offers 1402 N thrust and a 2200 N hold. This BSAID80X350 is preferred over a stroke-end-only SAIL cylinder when you must secure the load anywhere in the 350 mm travel. If you only need standard double-rod motion without mid-stroke holding, a plain SAID cylinder suffices.
For replacement, verify the 80 mm bore, 350 mm stroke, PT tapered port threads, and carbon steel dual rods. The correct mounting set for this double-rod body is Basic, FA, LB, TC, TCM1, or TCM2 (omitting FB, CA, CB, CR). Because the stroke is 350 mm, the 25 mm rod diameter provides good side-load resistance, but an external guide is still recommended for unsupported loads. Always ensure the rod has stopped before clamping, and use balanced pressures to unlock safely.
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 BSAID80X350 FAQ
The built-in clamp-lock provides a static holding force of 3600 N. It locks the rod at any position bidirectionally, but only after the cylinder has stopped; it cannot brake a moving rod.
The clamp is released via a third G1/8 enclasp port, but you must balance the air pressures on both sides of the piston first. If pressures are unbalanced, the rod can jump abruptly upon release.
Related AirTAC Lock & Standard Cylinders
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