Airtac BSAID Clamp Cylinder BSAID80X400S
The AirTAC Airtac BSAID Clamp Cylinder BSAID80X400S is a genuine double-acting ISO 15552 cylinder with a Ø80mm bore, 400mm 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
- Stroke400 mm
- Cylinder portG3/8
- TypeDouble rod (BSAID)
- Enclasp portG1/8
- Rod threadM20×1.5
About the Airtac BSAID Clamp Cylinder BSAID80X400S
The AirTAC BSAID80X400-S is a double-acting ISO 15552 extruded aluminum profile cylinder featuring a rod extending from both ends and a spring-applied, air-released clamp-lock mechanism. It delivers equal thrust in both directions, generating 2268 N of pull force at 0.5 MPa, and its integrated enclasp gripper secures the rod at any position along the 400 mm stroke with a static holding force of 3600 N. Buyers must recognize that holding force and thrust are separate values; you must size the 3600 N clamp capacity against your static load, not the 2268 N cylinder thrust.
This unit includes a -S magnet for CMSE reed and DMSE solid-state sensors, utilizing the dual-side sensor grooves. The clamp requires a third G1/8 unlock port (separate from the 3/8 cylinder ports) and 0.15-0.7 MPa balanced pressure to release safely. The double-rod design is specifically 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. Furthermore, the variable air cushion only decelerates the piston near stroke ends; the clamp itself is the true holding device.
Airtac BSAID Clamp Cylinder BSAID80X400S Technical Specifications
| Model | Airtac BSAID Clamp Cylinder BSAID80X400S |
|---|---|
| Series | BSAI ISO 15552 clamp-lock cylinder |
| Bore size | Ø80 mm |
| Stroke | 400 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 BSAID80X400S Is Used
Vertical Axis Drop Prevention
Holds a suspended load at any point in the 400 mm travel during a power loss, relying on the 3600 N clamp rather than live air pressure.
Machining Position Hold
Secures a dual-sided workpiece fixture rigidly for intermediate machining or inspection without drifting under vibration.
Dual-Side Tooling Guidance
Uses the second rod end to mount a counterweight or external guide rail, preventing torsion while the clamp secures the position.
Is the Airtac BSAID Clamp Cylinder BSAID80X400S the Right Clamp-Lock?
Select this double-rod model when you need equal push/pull thrust and anti-rotation guidance alongside mid-stroke holding. If your load requires less holding capacity, the bore 63 double-rod version provides 1402 N thrust at 0.5 MPa and a 2200 N clamp hold. If you only need to hold at the stroke end, a SAIL cylinder suffices, but BSAID is required for true lock-anywhere functionality. Remember that the clamp locks only after the rod has completely stopped; it cannot brake a moving rod, and unlocking requires balanced air pressure to prevent abrupt rod jumps.
For replacement matching, confirm the 80 mm bore, 400 mm stroke, double rod, and PT port threads. The 25 mm carbon steel rod and M20x1.5 thread offer excellent side-load capacity, but at 400 mm stroke, an external guide is still recommended for heavy loads. This BSAID accepts Basic, FA, LB, TC, TCM1, and TCM2 mounts (omitting FB, CA, CB, and CR), and the -S magnet pairs directly with AirTAC CMSE and DMSE switches.
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 BSAID80X400S FAQ
The clamp provides a static holding force of 3600 N, which is entirely separate from the 2268 N thrust generated at 0.5 MPa. The clamp holds the load at any position, while thrust drives the motion.
No, the clamp locks only after the rod has stopped moving; it is not a brake. Additionally, the rod can jump if unlocked without balanced air pressure, so an independent safety measure is required for human-safety loads.
Related AirTAC Lock & Standard Cylinders
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