Airtac BSAI Locking Clamp Cylinder BSAI40X600S
The AirTAC Airtac BSAI Locking Clamp Cylinder BSAI40X600S is a genuine double-acting ISO 15552 cylinder with a Ø40mm bore, 600mm 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
- Stroke600 mm
- Cylinder portG1/4
- TypeSingle rod (BSAI)
- Enclasp portG1/8
- Rod threadM12×1.25
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac BSAI Locking Clamp Cylinder BSAI40X600S
The AirTAC BSAI40X600-S is a double-acting ISO 15552 profile cylinder equipped with a built-in spring-applied, air-released clamp-lock. It clamps the 16mm carbon steel piston rod at any position along its 600mm travel, delivering a static holding force of 900 N. Because it carries the -S magnet option, it tracks position directly with AirTAC CMSE reed or DMSE solid-state sensors. Operating pressure spans 0.15-0.7 MPa, and the enclasp unlock mechanism uses a dedicated G1/8 port alongside the 1/4 PT cylinder ports.
A critical sizing distinction is that the 900 N clamp holding force is a separate metric from the cylinder's 628 N thrust at 0.5 MPa; you must size the holding capacity against your static load, not the push force. Furthermore, the variable air cushions only decelerate the piston near stroke ends, while the clamp is the actual device that holds the load. The clamp locks only after the rod stops, meaning it cannot brake a moving load, and it requires balanced air pressure to unlock safely without abrupt rod jump.
Airtac BSAI Locking Clamp Cylinder BSAI40X600S Technical Specifications
| Model | Airtac BSAI Locking Clamp Cylinder BSAI40X600S |
|---|---|
| Series | BSAI ISO 15552 clamp-lock cylinder |
| Bore size | Ø40 mm |
| Stroke | 600 mm |
| Type | Single rod (BSAI), 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 | — |
Push/pull as tabulated. 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 BSAI Locking Clamp Cylinder BSAI40X600S Is Used
Vertical Axis Drop Prevention
Holds a 900 N vertical load instantly at any height if air pressure drops, preventing sudden crashes on lifting stages.
Mid-Stroke Machining Hold
Clamps the rod securely at a specific intermediate travel point to resist cutting forces during part profiling.
Power Loss Safety Stop
Spring-applied enclasp engages automatically upon air loss to freeze the tool in place anywhere along the 600mm path.
Is the Airtac BSAI Locking Clamp Cylinder BSAI40X600S the Right Clamp-Lock?
Step down to a 32mm bore if your load requires less thrust (402 N push at 0.5 MPa) and only 600 N of holding capacity. Step up to a 50mm bore for higher force (982 N thrust, 1400 N holding). Choose this BSAI over a SAIL model when you need to secure the load at any intermediate point in the 600mm stroke, rather than just at the end. A plain SAI cylinder suffices if live air pressure continuously holds the load and no drop-protection is needed. For safety-critical stops, add an independent external measure, as the clamp cannot arrest moving mass.
This 40mm bore uses a 1/4 PT port thread and accepts Basic, FA, FB, CA, CB, CR, LB, TC, TCM1, and TCM2 mounts. The M12x1.25 rod thread handles moderate side loads, but at 600mm of stroke, you must use an external guide to prevent rod binding. To replace: match single-rod, 40mm bore, 600mm stroke, PT ports, and the -S magnet for CMSE/DMSE sensing.
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 BSAI Locking Clamp Cylinder BSAI40X600S FAQ
The built-in clamp-lock provides a static holding force of 900 N. It is spring-applied, air-released, and grips the rod bidirectionally at any position along the stroke.
No, the clamp locks only after the cylinder has stopped and cannot brake a moving rod. It must be unlocked with balanced air pressure to prevent abrupt movement, and safety-critical applications need an independent external braking measure.
Related AirTAC Lock & Standard Cylinders
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