Airtac BSAID Clamp Cylinder BSAID50X400S
The AirTAC Airtac BSAID Clamp Cylinder BSAID50X400S 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 BSAID50X400S
The AirTAC BSAID50X400-S is a double-acting ISO 15552 profile cylinder featuring a double-rod configuration and a spring-applied, air-released clamp-lock. It provides a static holding force of 1400 N, gripping the rod securely at any position along its 400 mm travel. Because it is a double-rod actuator, the thrust is equal in both directions at 825 N (0.5 MPa). Buyers must distinguish this holding force from the thrust: the 1400 N rating dictates the static load the clamp can sustain, whereas the 825 N thrust drives the motion.
This design uses a rod extending from both ends, allowing you to mount a workpiece on one side and a guide, counterweight, or position flag on the opposite end for dual-side anti-rotation. The enclasp mechanism relies on a third G1/8 unlock port, separate from the 1/4 cylinder ports. Remember that the variable air cushion only decelerates the piston near stroke ends; the clamp is the sole device responsible for holding the load.
Airtac BSAID Clamp Cylinder BSAID50X400S Technical Specifications
| Model | Airtac BSAID Clamp Cylinder BSAID50X400S |
|---|---|
| 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 BSAID50X400S Is Used
Vertical Axis Intermediate Hold
Secures a vertically lifted payload at any point in the 400 mm travel, preventing drops during mid-stroke pauses without relying on continuous air pressure.
Emergency Power Loss Safety
Spring-applied clamp engages instantly upon air loss, holding the double-rod payload stationary anywhere in the cylinder's operating range.
Machining Position Lock
Locks the workpiece rigidly in place for machining or inspection, using the second rod end for a position flag or secondary guidance.
Is the Airtac BSAID Clamp Cylinder BSAID50X400S the Right Clamp-Lock?
Choose this double-rod model when a project requires symmetrical force (825 N both ways) and dual-end tooling. If your application only needs a lock at the stroke end, a SAIL cylinder suffices, but the BSAID50X400-S is necessary for holding at any intermediate position. If higher holding capacity is needed, stepping up to a 63 mm bore provides 2200 N of holding force and 1402 N of pull thrust. Conversely, a 40 mm bore drops the holding force to 900 N.
The clamp locks only after the rod has stopped; it cannot brake a moving load. Unlocking requires balanced air pressure (0.15-0.7 MPa) on both sides of the piston, or the rod may jump abruptly. For safety-critical applications, install an independent external safety measure. This unit includes a magnet for CMSE (reed) and DMSE (electronic) sensors. It uses PT ports and accepts Basic, FA, LB, TC, TCM1, and TCM2 mounts. Given the 400 mm stroke, use an external guide to prevent excessive side loading on the 20 mm rod.
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 BSAID50X400S FAQ
The clamp-lock provides a static holding force of 1400 N. It is bidirectional and engages at any position along the stroke, holding the load securely without live air pressure.
The clamp locks only after the cylinder has stopped moving; it cannot brake a moving rod. To unlock it safely, apply balanced air pressure (0.15-0.7 MPa) to both sides of the piston via the G1/8 enclasp port to prevent abrupt rod movement.
Related AirTAC Lock & Standard Cylinders
Request a Quote for Airtac BSAID Clamp Cylinder BSAID50X400S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.