Airtac BSAID Clamp Cylinder BSAID50X500
The AirTAC Airtac BSAID Clamp Cylinder BSAID50X500 is a genuine double-acting ISO 15552 cylinder with a Ø50mm bore, 500mm 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
- Stroke500 mm
- Cylinder portG1/4
- TypeDouble rod (BSAID)
- Enclasp portG1/8
- Rod threadM16×1.5
About the Airtac BSAID Clamp Cylinder BSAID50X500
The AirTAC BSAID50X500 is a double-acting ISO 15552 profile cylinder featuring a rod extending from both ends and an integrated clamp-lock mechanism. A spring-applied, air-released gripper clamps the 20mm carbon steel rod, holding the load at any position along the 500mm stroke with a static holding force of 1400 N. Because it is a double-rod design, it delivers equal thrust in both directions (825 N at 0.5 MPa), making it ideal for mounting a workpiece on one end and a guide or counterweight on the other for dual-side anti-rotation guidance.
It is vital to distinguish this 1400 N holding force from the 825 N cylinder thrust; you must size the clamp's holding capacity against the static load, not the pneumatic push force. The clamp operates via a third G1/8 enclasp port, separate from the 1/4 cylinder ports. Remember that the variable air cushion only decelerates the piston near stroke ends, while the clamp provides the actual holding power. The mechanism locks only after the rod has completely stopped, and it must be released with balanced air pressures to prevent abrupt movement.
Airtac BSAID Clamp Cylinder BSAID50X500 Technical Specifications
| Model | Airtac BSAID Clamp Cylinder BSAID50X500 |
|---|---|
| Series | BSAI ISO 15552 clamp-lock cylinder |
| Bore size | Ø50 mm |
| Stroke | 500 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 BSAID50X500 Is Used
Vertical Axis Holding
Maintains a 1400 N static hold on a vertical load at any 500mm stroke position, preventing gravity-driven drops during air pressure loss.
Machining Position Lock
Secures a dual-sided workpiece fixture rigidly for machining or inspection, using the second rod end for anti-rotation guidance.
Power Loss Safety
The spring-applied clamp engages automatically when air is removed, safely freezing the load mid-travel during an emergency shutdown.
Is the Airtac BSAID Clamp Cylinder BSAID50X500 the Right Clamp-Lock?
Choose this double-rod model when a process requires equal force both ways and mid-stroke holding without live pressure. If your application only needs end-of-stroke locking, a SAIL cylinder suffices, while a plain SAID works if no clamp is needed. If you need higher holding capacity, stepping up to a 63mm bore increases the static holding force to 2200 N (with 1402 N thrust at 0.5 MPa). For lighter loads, a 40mm bore offers 900 N holding force and 528 N pull thrust.
This BSAID50X500 uses PT tapered ports and accepts Basic, FA, LB, TC, TCM1, and TCM2 mounts (omitting FB/CA/CB/CR). Because the stroke is 500mm, the long unsupported rod requires an external guide to prevent side-load wear. The clamp is not a moving-rod brake; it locks only after stopping, and safety-critical applications need an 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 BSAID50X500 FAQ
The 1400 N static holding force is the clamp's capacity to hold a stationary load, which is separate from the 825 N pneumatic thrust that moves the rod. You must size the clamp against the static load weight, not the cylinder thrust.
The clamp locks only after the rod has stopped moving. To unlock it safely, air pressure on both sides of the piston must be balanced via the G1/8 enclasp port; otherwise, the rod can jump abruptly. It cannot brake a moving rod.
Related AirTAC Lock & Standard Cylinders
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