Airtac BSAI Locking Clamp Cylinder BSAI50X1000S
The AirTAC Airtac BSAI Locking Clamp Cylinder BSAI50X1000S is a genuine double-acting ISO 15552 cylinder with a Ø50mm 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 1400 N.
- BoreØ50 mm
- Stroke1000 mm
- Cylinder portG1/4
- TypeSingle rod (BSAI)
- Enclasp portG1/8
- Rod threadM16×1.5
- 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 BSAI50X1000S
The AirTAC BSAI50X1000-S is a double-acting ISO 15552 profile cylinder featuring a built-in spring-applied, air-released clamp-lock. It provides a static holding force of 1400 N at any position along its 1000 mm stroke. The cylinder delivers 982 N thrust at 0.5 MPa, but remember that holding force and thrust are separate quantities; you must size the 1400 N clamp capacity against your static load, not the push thrust. A third G1/8 enclasp port controls the unlock mechanism.
This model includes a -S magnet for CMSE reed and DMSE solid-state sensors, using PT tapered ports. The clamp locks bidirectionally once the rod stops, but it cannot brake a moving piston. The variable air cushion only decelerates the piston near stroke ends; the clamp itself is what secures the load.
Airtac BSAI Locking Clamp Cylinder BSAI50X1000S Technical Specifications
| Model | Airtac BSAI Locking Clamp Cylinder BSAI50X1000S |
|---|---|
| Series | BSAI ISO 15552 clamp-lock cylinder |
| Bore size | Ø50 mm |
| Stroke | 1000 mm |
| Type | Single rod (BSAI), 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 | — |
Push/pull as tabulated. 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 BSAI Locking Clamp Cylinder BSAI50X1000S Is Used
Vertical Axis Mid-Stroke Hold
Secures a 1400 N vertical load at any point along the 1000 mm travel without relying on continuous air pressure.
Emergency Power Loss Hold
Spring-applied clamp engages instantly upon air loss, freezing the piston exactly where it stopped.
Machining Position Lock
Holds the workpiece rigidly at a custom stroke position for intermediate drilling or inspection tasks.
Is the Airtac BSAI Locking Clamp Cylinder BSAI50X1000S the Right Clamp-Lock?
Step down to a 40 mm bore (528 N thrust, 900 N hold) for lighter loads, or up to a 63 mm bore (1559 N thrust, 2200 N hold) if the 1400 N clamp capacity is insufficient. Choose this BSAI model over a SAIL cylinder when you need to hold position mid-stroke rather than only at the ends. If no locking is required, a plain SAI cylinder suffices. Because the stroke is 1000 mm, an external guide is recommended to manage side loads on the 20 mm rod.
Replacement match: single rod, 50 mm bore, 1000 mm stroke, PT ports. Mounting options include Basic, FA, FB, CA, CB, CR, LB, TC, TCM1, and TCM2. The clamp locks only after the rod stops; it must be unlocked with balanced air pressures (0.15-0.7 MPa) or the rod may jump. For human-safety applications, add an independent safety measure.
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 BSAI50X1000S FAQ
It provides a static holding force of 1400 N. The clamp locks the rod at any position bidirectionally, but only after the cylinder has stopped moving; it is not a dynamic brake.
The clamp is released by applying 0.15-0.7 MPa air to the G1/8 enclasp port. The air pressures on both sides of the piston must be balanced before unlocking, otherwise the rod can move abruptly.
Related AirTAC Lock & Standard Cylinders
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