Airtac BSAID Clamp Cylinder BSAID80X250S
The AirTAC Airtac BSAID Clamp Cylinder BSAID80X250S is a genuine double-acting ISO 15552 cylinder with a Ø80mm bore, 250mm 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
- Stroke250 mm
- Cylinder portG3/8
- TypeDouble rod (BSAID)
- Enclasp portG1/8
- Rod threadM20×1.5
About the Airtac BSAID Clamp Cylinder BSAID80X250S
The AirTAC BSAID80X250-S 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 an equal thrust of 2268 N in both directions at 0.5 MPa, while the integrated enclasp mechanism provides a static holding force of 3600 N. Because holding force and thrust are separate quantities, you must size the 3600 N clamp capacity against your static load, not the cylinder's push/pull thrust.
This double-rod design lets you mount a workpiece on one end and a guide or position flag on the opposite end for dual-side anti-rotation. The clamp locks the rod at any position along the 250 mm stroke, but it only engages after the piston stops; it cannot brake a moving load. A third G1/8 enclasp port supplies the unlock pressure, and the variable air cushion solely decelerates the piston near stroke ends without holding the load.
Airtac BSAID Clamp Cylinder BSAID80X250S Technical Specifications
| Model | Airtac BSAID Clamp Cylinder BSAID80X250S |
|---|---|
| Series | BSAI ISO 15552 clamp-lock cylinder |
| Bore size | Ø80 mm |
| Stroke | 250 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 BSAID80X250S Is Used
Vertical Axis Load Holding
Freezes a lifted workpiece at any height along the 250 mm travel with 3600 N of holding force during a complete air pressure loss.
Mid-Stroke Machining Hold
Secures the dual rods at a precise intermediate point for machining or inspection, using the second rod end for a position flag.
Emergency Safety Stop
Provides a bidirectional static hold once the piston stops moving, preventing unintended drift on double-acting assemblies.
Is the Airtac BSAID Clamp Cylinder BSAID80X250S the Right Clamp-Lock?
Choose this 80 mm bore if your application needs the 3600 N holding force to secure a load mid-stroke; step down to a 63 mm bore (1402 N pull thrust, 2200 N hold) for lighter loads, or up to a 100 mm bore (3681 N pull thrust, 5500 N hold) for heavier static masses. Select BSAID over a stroke-end-only SAIL when you must freeze the load anywhere in the travel. If you just need equal bidirectional thrust without mid-stroke holding, a plain SAID suffices.
For safe operation, the clamp locks only after the cylinder stops and must be released with balanced air pressures on both sides to prevent the rod from jumping. Human-safety-critical loads require an additional independent safety measure. This replacement features a carbon steel rod, PT tapered ports (3/8 cylinder, G1/8 enclasp), and the -S magnet for CMSE reed and DMSE electronic sensors. The BSAID mounting set omits FB, CA, CB, and CR, accepting only Basic, FA, LB, TC, TCM1, and TCM2. The 25 mm rod and M20x1.5 thread handle high side loads, but at 250 mm stroke an external guide is still advised.
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 BSAID80X250S FAQ
The integrated clamp-lock provides a static holding force of 3600 N. It engages via a spring to hold the double rod at any position bidirectionally, but only after the cylinder has fully stopped moving.
The clamp is released by supplying 0.15-0.7 MPa to the G1/8 enclasp port, but only after the air pressures on both sides of the piston are balanced. If pressures are unbalanced, the rod can jump abruptly upon release.
Related AirTAC Lock & Standard Cylinders
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