Airtac BSAID Clamp Cylinder BSAID63X125S
The AirTAC Airtac BSAID Clamp Cylinder BSAID63X125S is a genuine double-acting ISO 15552 cylinder with a Ø63mm bore, 125mm 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 2200 N.
- BoreØ63 mm
- Stroke125 mm
- Cylinder portG3/8
- TypeDouble rod (BSAID)
- Enclasp portG1/8
- Rod threadM16×1.5
About the Airtac BSAID Clamp Cylinder BSAID63X125S
The AirTAC BSAID63X125-S is a double-acting ISO 15552 profile cylinder featuring a double-rod design and a built-in spring-applied, air-released clamp-lock. It provides bidirectional holding at any position along its 125 mm stroke, delivering a static holding force of 2200 N. Because it is a double-rod actuator, the thrust is equal in both directions, yielding 1402 N of push and pull force at 0.5 MPa. Buyers must distinguish between this 2200 N static holding force and the 1402 N thrust: the clamp secures the static load, whereas thrust dictates the dynamic moving capacity.
A rod extends from both ends, allowing you to mount a workpiece on one side and a guide or position flag on the opposite end for dual-side anti-rotation. The clamping mechanism relies on a separate G1/8 enclasp port and requires balanced air pressure between 0.15-0.7 MPa to unlock safely. Remember that the adjustable air cushions only decelerate the piston near stroke ends; the clamp itself is what holds the load. For position sensing, the integrated -S magnet works seamlessly with AirTAC CMSE reed and DMSE electronic switches.
Airtac BSAID Clamp Cylinder BSAID63X125S Technical Specifications
| Model | Airtac BSAID Clamp Cylinder BSAID63X125S |
|---|---|
| Series | BSAI ISO 15552 clamp-lock cylinder |
| Bore size | Ø63 mm |
| Stroke | 125 mm |
| Type | Double rod (BSAID), double acting |
| Cylinder port | G3/8 |
| Rod thread | M16×1.5 |
| Lock type | Spring-applied, air-released clamp (any position) |
|---|---|
| Static holding force | 2200 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 (Ø63 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 (Ø63mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 1559 N | 1402 N |
| 0.7 MPa (max) | 2182 N | — |
Equal force both directions (double rod). Rated to the 0.7 MPa operating maximum for this series. The clamp holding force (2200 N) is separate from cylinder thrust. Size with a margin.
Where the Airtac BSAID Clamp Cylinder BSAID63X125S Is Used
Vertical Lift Holding
Secures a dual-sided vertical lift stage at any mid-stroke point during a power loss, preventing gravity-driven drops with 2200 N of holding force.
Machining Position Lock
Locks a workpiece mounted on one rod end while using the opposite rod end for a position flag, ensuring rigid anti-rotation clamping for machining.
Emergency Safety Stop
Holds the load safely in any position when air pressure drops, serving as a fail-safe clamp that requires balanced pressure to release the rod.
Is the Airtac BSAID Clamp Cylinder BSAID63X125S the Right Clamp-Lock?
Choose this 63 mm bore model when an application requires 1402 N of thrust both ways alongside a robust 2200 N holding capability. If your load is lighter, stepping down to the 50 mm bore offers 825 N pull thrust and 1400 N of holding force. Conversely, heavier loads may require the 80 mm bore, which provides 2268 N pull thrust and 3600 N holding force. This BSAID variant is selected over a plain SAID double-rod cylinder when power-failure holding anywhere in the stroke is mandatory, and over a SAIL cylinder when you need mid-stroke locking rather than end-of-stroke holding only.
For safe operation, understand that the clamp engages only after the cylinder has stopped; it cannot brake a moving rod. It must be unlocked with balanced pressures on both sides of the piston, or the rod may jump abruptly. Safety-critical applications require an additional independent safety measure. As a replacement, verify the double-rod configuration, 63 mm bore, 125 mm stroke, PT threaded ports (3/8 cylinder port, G1/8 enclasp port), and the correct mounting set (Basic, FA, LB, TC, TCM1, TCM2). The 20 mm rod diameter and M16x1.5 thread handle side loads well, but external guidance is recommended for long unsupported strokes.
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 BSAID63X125S FAQ
The clamp-lock provides a static holding force of 2200 N at any position. As a double-rod cylinder, it generates an equal thrust of 1402 N in both the push and pull directions at 0.5 MPa.
The spring-applied clamp engages only after the cylinder stops; it cannot brake a moving rod. To unlock it safely, air pressure must be balanced on both sides of the piston via the G1/8 enclasp port, preventing abrupt rod movement.
Related AirTAC Lock & Standard Cylinders
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