Airtac BSAID Clamp Cylinder BSAID125X1000S
The AirTAC Airtac BSAID Clamp Cylinder BSAID125X1000S is a genuine double-acting ISO 15552 cylinder with a Ø125mm bore, 1000mm 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
- Stroke1000 mm
- Cylinder portG1/2
- TypeDouble rod (BSAID)
- Enclasp portG1/8
- Rod threadM27×2
About the Airtac BSAID Clamp Cylinder BSAID125X1000S
The AirTAC BSAID125X1000-S is a double-acting ISO 15552 profile cylinder featuring a double-rod design and a spring-applied, air-released clamp-lock. It secures the load at any position along its 1000mm stroke, delivering a static holding force of 8600 N. Because it is a double-rod unit, the thrust is identical in both directions at 5734 N (0.5 MPa), and having a rod extending from both ends allows you to mount a workpiece on one side and a counterweight or position flag on the other for dual-side guidance.
It is crucial to distinguish this 8600 N holding force from the cylinder's 5734 N thrust; the clamp's job is to maintain a static position, not to drive the load. The lock engages only after the piston has stopped moving, acting as an enclasp gripper rather than a dynamic brake. Unlocking requires balanced air pressure on both sides of the piston via the dedicated G1/8 enclasp port; otherwise, the rod can jump abruptly. Note that the variable air cushions only decelerate the piston near the stroke ends, while the clamp is what actually holds the load.
Airtac BSAID Clamp Cylinder BSAID125X1000S Technical Specifications
| Model | Airtac BSAID Clamp Cylinder BSAID125X1000S |
|---|---|
| Series | BSAI ISO 15552 clamp-lock cylinder |
| Bore size | Ø125 mm |
| Stroke | 1000 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 BSAID125X1000S Is Used
Vertical Lift Holding
Maintains a heavy vertical platform at any intermediate height with 8600 N of holding force, preventing sudden drops if air pressure is lost.
Machining Position Lock
Clamps a large workpiece securely in place during machining or inspection, using the double-rod design to mount a secondary tool or gauge on the opposite end.
Power Failure Safety
Spring-applied clamp engages instantly upon loss of air pressure to freeze the rod safely wherever it has stopped along the 1000mm travel.
Is the Airtac BSAID Clamp Cylinder BSAID125X1000S the Right Clamp-Lock?
Choose this 125mm bore model when an application demands massive holding capacity and equal force both ways over a long 1000mm travel. If you do not need double-rod functionality, the single-rod BSAI125X1000 offers the same 8600 N clamp but a higher 6136 N push thrust. If your load is lighter, stepping down to a 100mm bore reduces the holding force to 5500 N and the pull thrust to 3681 N. Conversely, if you only need to hold the load at the stroke ends rather than mid-travel, a plain SAID cylinder without the clamp-lock is simpler and more cost-effective.
When replacing this unit, match the double-rod configuration, 125mm bore, 1000mm stroke, PT port threads, and the -S magnet for CMSE (reed) and DMSE (solid-state) sensors. The BSAID mounting set omits FB, CA, CB, and CR options, accepting only Basic, FA, LB, TC, TCM1, and TCM2 brackets. The robust 32mm carbon steel rod with an M27x2 thread handles high side loads, but at 1000mm of stroke, an external guide is strongly recommended to prevent rod binding. Remember that the clamp locks only after the cylinder stops and cannot arrest a moving load; safety-critical applications require an additional independent safety measure.
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 BSAID125X1000S FAQ
The spring-applied clamp-lock provides a static holding force of 8600 N. It engages only after the cylinder has stopped moving and can hold the load at any position along the 1000mm stroke, but it cannot brake a moving rod.
The clamp is released by supplying air to the dedicated G1/8 enclasp port, but only after the air pressures on both sides of the piston are balanced. If pressures are not balanced, the rod can move abruptly upon unlocking.
Related AirTAC Lock & Standard Cylinders
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