Airtac BSAID Clamp Cylinder BSAID50X350
The AirTAC Airtac BSAID Clamp Cylinder BSAID50X350 is a genuine double-acting ISO 15552 cylinder with a Ø50mm bore, 350mm 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
- Stroke350 mm
- Cylinder portG1/4
- TypeDouble rod (BSAID)
- Enclasp portG1/8
- Rod threadM16×1.5
About the Airtac BSAID Clamp Cylinder BSAID50X350
The AirTAC BSAID50X350 is a double-acting ISO 15552 profile cylinder featuring a double-rod design and an integrated clamp-lock. A spring-applied, air-released mechanism grips the carbon steel rod at any point along its 350 mm travel, delivering a static holding force of 1400 N. Because it is a double-rod unit, the thrust is identical in both directions at 825 N (0.5 MPa), and having a rod extending from each end allows you to mount a workpiece on one side and a guide or counterweight on the other for dual-side anti-rotation.
It is vital to separate holding force from thrust: the 1400 N clamp rating is the static load capacity of the brake, not the 825 N pneumatic thrust. The clamp only engages after the piston stops, meaning it cannot brake a moving load. Furthermore, the variable air cushion merely decelerates the piston near stroke ends, while the clamp provides the actual position holding. Release requires balanced air pressure on both sides of the piston via the G1/8 enclasp port to prevent abrupt rod jumps.
Airtac BSAID Clamp Cylinder BSAID50X350 Technical Specifications
| Model | Airtac BSAID Clamp Cylinder BSAID50X350 |
|---|---|
| Series | BSAI ISO 15552 clamp-lock cylinder |
| Bore size | Ø50 mm |
| Stroke | 350 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 BSAID50X350 Is Used
Vertical Load Holding
Suspends elevated loads at any intermediate height along the vertical stroke, preventing gravity-driven drops during air loss.
Mid-Travel Machining Lock
Secures the double-rod assembly firmly in place for precision drilling or inspection processes away from the end caps.
Dual-Side Tooling Index
Utilizes the second rod end for mounting a position flag or secondary tool, locking the carriage securely during station transitions.
Is the Airtac BSAID Clamp Cylinder BSAID50X350 the Right Clamp-Lock?
Choose this double-rod clamp-lock when you need to suspend a load mid-stroke and require symmetric force. If your application only needs holding at the stroke ends, a plain SAIL cylinder suffices, but BSAID wins when intermediate locking is required. If you need higher holding capacity, stepping up to bore 63 provides a 2200 N clamp force and 1402 N thrust. For this 350 mm stroke, the 20 mm rod and M16x1.5 thread offer good side-load capacity, but an external guide rail is still recommended to prevent binding.
This PT-port model operates at 0.15-0.7 MPa with speeds of 30-800 mm/s. It accepts Basic, FA, LB, TC, TCM1, and TCM2 mounts (omitting FB/CA/CB/CR due to the double-rod structure). As no magnet is specified, it will not support CMSE reed or DMSE solid-state sensors without modification. Remember that for human-safety critical stops, an additional independent mechanical measure is required, as the clamp unlocks only under balanced pressure.
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 BSAID50X350 FAQ
The clamp-lock provides a static holding force of 1400 N. It engages via a spring mechanism and can hold the load at any position along the 350 mm stroke, but only after the cylinder has come to a complete stop.
The clamp is released by supplying air to the 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 may jump abruptly upon release.
Related AirTAC Lock & Standard Cylinders
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