Airtac BSAI Locking Clamp Cylinder BSAI40X700S
The AirTAC Airtac BSAI Locking Clamp Cylinder BSAI40X700S is a genuine double-acting ISO 15552 cylinder with a Ø40mm bore, 700mm 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
- Stroke700 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 BSAI40X700S
The AirTAC BSAI40X700-S is a double-acting ISO 15552 profile cylinder featuring an integrated spring-applied, air-released clamp-lock. It secures the 16 mm carbon steel rod at any point along its 700 mm travel, delivering a static holding force of 900 N. While the cylinder generates 628 N of push thrust at 0.5 MPa, the clamp holding force is a separate mechanical quantity. Buyers must size the 900 N holding capacity against the static load weight, not the pneumatic thrust.
This model includes a magnet (-S) for position sensing with CMSE reed or DMSE electronic switches. A third G1/8 enclasp port supplies unlock pressure, and the cylinder operates within a 0.15-0.7 MPa range. The variable air cushion only decelerates the piston near stroke ends, whereas the clamp provides the actual load holding.
Airtac BSAI Locking Clamp Cylinder BSAI40X700S Technical Specifications
| Model | Airtac BSAI Locking Clamp Cylinder BSAI40X700S |
|---|---|
| Series | BSAI ISO 15552 clamp-lock cylinder |
| Bore size | Ø40 mm |
| Stroke | 700 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 BSAI40X700S Is Used
Vertical Axis Hold
Prevents gravity-driven drops on vertical strokes by clamping the rod securely at any intermediate position during a power loss.
Machining Position Lock
Freezes the workpiece at a precise intermediate height for drilling or inspection without relying on continuous air pressure.
Mid-Travel Pause
Holds a product at a specific height inside the 700 mm stroke for scanning or processing before completing the cycle.
Is the Airtac BSAI Locking Clamp Cylinder BSAI40X700S the Right Clamp-Lock?
Choose this 40 mm bore when an application requires locking mid-stroke rather than only at the end of travel, which is the primary advantage over a SAIL cylinder. If the 900 N holding force or 628 N thrust is insufficient, stepping up to the 50 mm bore yields 1400 N of hold and 982 N of thrust. Conversely, lighter duties can use the 32 mm bore with 600 N hold. The clamp engages only after the rod stops, so it cannot brake a moving load. Furthermore, unlocking requires balanced air pressure on both piston sides to prevent abrupt rod movement. For safety-critical operations, add an independent external safety measure. This single-rod unit uses PT port threads (1/4 cylinder, G1/8 enclasp) and accepts Basic, FA, FB, CA, CB, CR, LB, TC, TCM1, and TCM2 mounts. Because the stroke is 700 mm, an external guide is recommended to prevent excessive side-loading on the 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 BSAI Locking Clamp Cylinder BSAI40X700S FAQ
The clamp-lock provides a static holding force of 900 N. It engages via a spring mechanism and clamps the rod at any position, but only after the cylinder has stopped moving.
The lock is released by applying 0.15-0.7 MPa of air pressure to the G1/8 enclasp port. To prevent the rod from jumping abruptly, the air pressures on both sides of the piston must be balanced before unlocking.
Related AirTAC Lock & Standard Cylinders
Request a Quote for Airtac BSAI Locking Clamp Cylinder BSAI40X700S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.