Airtac BSAID Clamp Cylinder BSAID125X80
The AirTAC Airtac BSAID Clamp Cylinder BSAID125X80 is a genuine double-acting ISO 15552 cylinder with a Ø125mm bore, 80mm 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 8600 N.
- BoreØ125 mm
- Stroke80 mm
- Cylinder portG1/2
- TypeDouble rod (BSAID)
- Enclasp portG1/8
- Rod threadM27×2
About the Airtac BSAID Clamp Cylinder BSAID125X80
The AirTAC BSAID125X80 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 position along its 80 mm travel with a static holding force of 8600 N. Because it is a double-rod actuator, the thrust is equal in both directions at 5734 N at 0.5 MPa, making it ideal for symmetrical push-pull tasks. A key distinction here is that this 8600 N holding force is a separate metric from the cylinder thrust; you must size the clamp capacity against the static load weight, not the pneumatic push force.
A primary reason to choose this double-rod layout is to mount a workpiece on one end and a guide, counterweight, or position flag on the opposite end, providing dual-side guidance and anti-rotation. The clamp mechanism relies on a third G1/8 enclasp port to release the rod, requiring a balanced air pressure between 0.15-0.7 MPa on both piston sides to unlock safely. Furthermore, the variable air cushion at the stroke ends only decelerates the piston; it is the mechanical clamp that actually holds the load, not the cushion.
Airtac BSAID Clamp Cylinder BSAID125X80 Technical Specifications
| Model | Airtac BSAID Clamp Cylinder BSAID125X80 |
|---|---|
| Series | BSAI ISO 15552 clamp-lock cylinder |
| Bore size | Ø125 mm |
| Stroke | 80 mm |
| Type | Double rod (BSAID), double acting |
| Cylinder port | G1/2 |
| Rod thread | M27×2 |
| Lock type | Spring-applied, air-released clamp (any position) |
|---|---|
| Static holding force | 8600 N |
| Enclasp / unlock port | G1/8 |
| Operating pressure | 0.15 – 0.7 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 500 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 (Ø125 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 (Ø125mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 6136 N | 5734 N |
| 0.7 MPa (max) | 8590 N | — |
Equal force both directions (double rod). Rated to the 0.7 MPa operating maximum for this series. The clamp holding force (8600 N) is separate from cylinder thrust. Size with a margin.
Where the Airtac BSAID Clamp Cylinder BSAID125X80 Is Used
Vertical Lift Holding
Secures heavy elevated platforms at any mid-stroke height with 8600 N of holding force, preventing gravity-driven drops during a sudden air loss.
Machining Position Lock
Freezes a dual-sided workpiece fixture rigidly in place for machining or inspection, using the second rod end for an anti-rotation guide.
Emergency Safety Stop
Provides a bidirectional clamping brake that engages once motion halts, maintaining load position safely during power or pressure failures.
Is the Airtac BSAID Clamp Cylinder BSAID125X80 the Right Clamp-Lock?
Select this 125 mm bore when an application demands heavy bidirectional force (5734 N both ways) and failsafe mid-stroke holding. If you need less force, stepping down to a 100 mm bore yields 3681 N thrust and a 5500 N holding force. Choose this BSAID model over a stroke-end-only SAIL lock when you must secure the rod at variable heights. If power-loss holding is not required at all, a plain SAID double-rod cylinder suffices. Remember the clamp locks only after the rod has completely stopped; it cannot brake a moving load, and safety-critical applications require an independent external measure.
For replacements, match the double-rod layout, 125 mm bore, 80 mm stroke, and PT tapered port threads. The mounting set for BSAID omits FB, CA, CB, and CR brackets, accepting only Basic, FA, LB, TC, TCM1, and TCM2. The 32 mm diameter carbon steel rod and M27x2 thread provide high side-load capacity, though external guidance is recommended for heavy loads. Without a -S magnet, this unit does not support 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 BSAID125X80 FAQ
The integrated clamp-lock provides a static holding force of 8600 N. It locks the rod at any position bidirectionally, but only engages after the cylinder has stopped moving; it is not a dynamic brake.
The clamp is released via a third G1/8 enclasp port, but only when air pressure is balanced on both sides of the piston. If pressures are unbalanced during unlock, the rod can jump abruptly, so ensure the load is stopped and stable before releasing.
Related AirTAC Lock & Standard Cylinders
Request a Quote for Airtac BSAID Clamp Cylinder BSAID125X80
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.