Airtac BSAID Clamp Cylinder BSAID50X400
The AirTAC Airtac BSAID Clamp Cylinder BSAID50X400 is a genuine double-acting ISO 15552 cylinder with a Ø50mm 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 1400 N.
- BoreØ50 mm
- Stroke400 mm
- Cylinder portG1/4
- TypeDouble rod (BSAID)
- Enclasp portG1/8
- Rod threadM16×1.5
About the Airtac BSAID Clamp Cylinder BSAID50X400
The AirTAC BSAID50X400 is a double-acting ISO 15552 profile cylinder featuring a double-rod configuration and an integrated clamp-lock mechanism. A spring-applied, air-released gripper secures the piston rod at any point along its 400 mm travel, delivering a static holding force of 1400 N. Because it is a double-rod design, the thrust is equal in both directions at 825 N (0.5 MPa). Buyers must distinguish this holding force from the cylinder thrust: the 1400 N rating dictates how much static load the clamp can freeze in place, whereas the 825 N thrust drives the motion.
This enclasp unit requires a third G1/8 unlock port alongside the standard 1/4 cylinder ports. The clamp locks only after the rod has stopped, meaning it cannot brake a moving load. Furthermore, it must be released using balanced air pressures; otherwise, the rod may jump abruptly. The double-rod architecture allows mounting a workpiece on one end and a guide or position flag on the other, providing dual-side guidance and preventing rotation.
Airtac BSAID Clamp Cylinder BSAID50X400 Technical Specifications
| Model | Airtac BSAID Clamp Cylinder BSAID50X400 |
|---|---|
| Series | BSAI ISO 15552 clamp-lock cylinder |
| Bore size | Ø50 mm |
| Stroke | 400 mm |
| Type | Double rod (BSAID), double acting |
| Cylinder port | G1/4 |
| Rod thread | M16×1.5 |
| Lock type | Spring-applied, air-released clamp (any position) |
|---|---|
| Static holding force | 1400 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 (Ø50 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa (max) | 1374 N | — |
Equal force both directions (double rod). Rated to the 0.7 MPa operating maximum for this series. The clamp holding force (1400 N) is separate from cylinder thrust. Size with a margin.
Where the Airtac BSAID Clamp Cylinder BSAID50X400 Is Used
Vertical Axis Hold
Freezes a lifting load at any intermediate height along the 400 mm stroke, preventing gravity-driven drops during an air-loss event.
Machining Position Lock
Secures a dual-sided workpiece fixture rigidly in place for machining or inspection, using the second rod end for a position flag.
Emergency Safety Hold
Acts as a fail-safe clamp that engages only after the cylinder stops, requiring balanced pressure to release safely.
Is the Airtac BSAID Clamp Cylinder BSAID50X400 the Right Clamp-Lock?
Choose this 50 mm bore when an application demands equal push/pull force (825 N at 0.5 MPa) and multi-axis stability. If your load requires less holding power, the 40 mm bore offers 900 N of holding force and 528 N of pull thrust; stepping up to the 63 mm bore provides 2200 N of holding force and 1402 N of pull thrust. Select the BSAID50X400 over a stroke-end-only SAIL model when you need to freeze the load anywhere in the 400 mm travel, not just at the extremes. If no intermediate locking is needed, a plain SAID cylinder suffices.
For safety-critical stops, add an independent external safety measure, as the clamp is not a dynamic brake. To replace this unit, match the double-rod format, 50 mm bore, 400 mm stroke, and PT port threads. The BSAID mounting set includes Basic, FA, LB, TC, TCM1, and TCM2 (omitting FB, CA, CB, and CR). This unit lacks a magnet (-S) for CMSE or DMSE sensors. Because the stroke is 400 mm, the 20 mm rod and M16x1.5 thread still require an external guide to manage side loads on long unsupported spans.
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 BSAID50X400 FAQ
The clamp-lock provides a static holding force of 1400 N. It engages via a spring-applied gripper at any position along the 400 mm stroke, independent of the 825 N pneumatic thrust.
The clamp locks only after the rod has stopped moving and cannot act as a brake. To release it safely, you must apply balanced air pressure to both sides of the piston via the G1/8 unlock port; otherwise, the rod may jump abruptly.
Related AirTAC Lock & Standard Cylinders
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