Airtac BSAID Clamp Cylinder BSAID40X100S
The AirTAC Airtac BSAID Clamp Cylinder BSAID40X100S is a genuine double-acting ISO 15552 cylinder with a Ø40mm bore, 100mm 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 900 N.
- BoreØ40 mm
- Stroke100 mm
- Cylinder portG1/4
- TypeDouble rod (BSAID)
- Enclasp portG1/8
- Rod threadM12×1.25
About the Airtac BSAID Clamp Cylinder BSAID40X100S
The AirTAC BSAID40X100-S is a double-acting ISO 15552 profile cylinder featuring a built-in spring-applied, air-released clamp-lock. It secures the carbon steel piston rod at any position along its 100mm travel, providing a reliable static holding force of 900 N. Because it is a double-rod unit, thrust is equal in both directions at 528 N (0.5 MPa), and the extending rod from both ends allows mounting a workpiece on one side and a guide or position flag on the other for dual-side anti-rotation.
It is crucial to distinguish this 900 N holding force from the cylinder's 528 N thrust; the clamp bears the static load, not the pneumatic pressure. Furthermore, the variable air cushion at the stroke ends only decelerates the piston and is not a holding device. The clamp engages via a separate G1/8 enclasp port, but locks only after the rod has completely stopped—it cannot brake a moving load.
Airtac BSAID Clamp Cylinder BSAID40X100S Technical Specifications
| Model | Airtac BSAID Clamp Cylinder BSAID40X100S |
|---|---|
| Series | BSAI ISO 15552 clamp-lock cylinder |
| Bore size | Ø40 mm |
| Stroke | 100 mm |
| Type | Double rod (BSAID), double acting |
| Cylinder port | G1/4 |
| Rod thread | M12×1.25 |
| Lock type | Spring-applied, air-released clamp (any position) |
|---|---|
| Static holding force | 900 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 800 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 (Ø40 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa (max) | 880 N | — |
Equal force both directions (double rod). Rated to the 0.7 MPa operating maximum for this series. The clamp holding force (900 N) is separate from cylinder thrust. Size with a margin.
Where the Airtac BSAID Clamp Cylinder BSAID40X100S Is Used
Vertical Axis Hold
Locks a lifting load at any intermediate height on a vertical plane, preventing gravity drops during cycle dwell without maintaining live air pressure.
Power Loss Safety
Spring-applied clamp instantly secures the double-ended rod wherever it sits upon an air supply failure, freezing the guided payload safely in place.
Machining Position Hold
Holds an inspection part or tooling payload perfectly stationary at a custom mid-stroke coordinate for precise milling or probing operations.
Is the Airtac BSAID Clamp Cylinder BSAID40X100S the Right Clamp-Lock?
Choose this 40mm bore model when an application requires mid-stroke holding and dual-side guidance. If your load demands a higher clamping capacity, stepping up to the 50mm bore provides a 1400 N holding force and 825 N pull thrust. Conversely, lighter duties can use the 32mm bore (600 N hold, 345 N pull). This BSAID variant is preferred over a stroke-end-only SAIL lock when you must freeze the load anywhere in the travel. A plain SAID suffices if no mid-stroke hold is needed.
For safe operation, unlock the clamp only when pressures on both sides of the piston are balanced to prevent abrupt rod jumps, and add independent safety measures for human-safety-critical loads. This BSAID40X100-S includes a magnet for CMSE reed and DMSE electronic sensors. It uses PT tapered ports (1/4 cylinder, G1/8 enclasp) and accepts Basic, FA, LB, TC, TCM1, or TCM2 mounts (omitting FB/CA/CB/CR due to the double-rod design). The M12x1.25 rod thread handles side loads well, but strokes over 300mm require an external guide.
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 BSAID40X100S FAQ
The 900 N static holding force is entirely separate from the 528 N thrust. The clamp resists external static loads when engaged, whereas thrust is the pneumatic moving force. You must size the holding force against the payload, not the thrust.
The clamp locks only after the rod stops and cannot brake a moving rod. To unlock it safely, you must balance the air pressures on both piston sides first; otherwise, the rod may jump abruptly. Safety-critical loads need an independent external safety measure.
Related AirTAC Lock & Standard Cylinders
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