Airtac BSAI Locking Clamp Cylinder BSAI40X1000
The AirTAC Airtac BSAI Locking Clamp Cylinder BSAI40X1000 is a genuine double-acting ISO 15552 cylinder with a Ø40mm bore, 1000mm 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
- Stroke1000 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 BSAI40X1000
The AirTAC BSAI40X1000 is a double-acting ISO 15552 profile cylinder featuring a built-in spring-applied, air-released clamp-lock. It delivers 628N of push thrust at 0.5MPa and firmly grips the 16mm carbon steel rod at any position along its 1000mm travel, providing a static holding force of 900N. You must size the holding force against your static load, as the 900N clamp capacity is a distinct quantity from the cylinder's 628N thrust. The lock engages bidirectionally once the piston stops, but it cannot brake a moving rod.
This enclasp mechanism requires a third G1/8 unlock port (separate from the 1/4 cylinder ports) and balanced air pressure to release safely without jumping. The variable air cushion only decelerates the piston near stroke ends; the clamp is the sole device holding the load. Without a magnet (-S), this specific unit does not support CMSE or DMSE sensors.
Airtac BSAI Locking Clamp Cylinder BSAI40X1000 Technical Specifications
| Model | Airtac BSAI Locking Clamp Cylinder BSAI40X1000 |
|---|---|
| Series | BSAI ISO 15552 clamp-lock cylinder |
| Bore size | Ø40 mm |
| Stroke | 1000 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 BSAI40X1000 Is Used
Vertical Axis Intermediate Hold
Pauses a 1000mm vertical lift at any midpoint, engaging the 900N clamp to secure the load without consuming continuous air pressure.
Power Failure Safety Stop
Spring-applied enclasp immediately grabs the rod upon air loss, freezing the payload safely wherever it stopped along the extended travel.
Machining Position Lock
Holds a workpiece rigidly at a custom stroke position for processing, ensuring the 16mm rod withstands operational vibration.
Is the Airtac BSAI Locking Clamp Cylinder BSAI40X1000 the Right Clamp-Lock?
Choose this 40mm bore model for long 1000mm strokes requiring intermediate positioning. If 628N thrust at 0.5MPa or the 900N holding capacity is insufficient, step up to the 50mm bore (982N thrust, 1400N holding force). If you only need to hold at stroke ends, a plain SAIL40 saves complexity; choose BSAI specifically for locking anywhere in the travel. For non-standard 1000mm lengths exceeding standard limits, an external guide is mandatory to prevent rod sagging and side-load damage.
Replacement requires a single-rod, 40mm bore, 1000mm stroke cylinder with PT ports. It accepts Basic, FA, FB, CA, CB, CR, LB, TC, TCM1, or TCM2 mounts. The clamp locks only after the rod stops; safety-critical applications need an independent backup measure, and pressures must be balanced before unlocking.
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 BSAI40X1000 FAQ
The built-in clamp-lock provides a static holding force of 900N. It engages bidirectionally at any position along the 1000mm stroke, but only after the piston has stopped moving.
The clamp uses a third G1/8 enclasp port and requires balanced air pressure on both sides of the piston to unlock. If pressures are unbalanced, the rod can jump abruptly upon release.
Related AirTAC Lock & Standard Cylinders
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