Airtac BSAI Locking Clamp Cylinder BSAI80X450S
The AirTAC Airtac BSAI Locking Clamp Cylinder BSAI80X450S is a genuine double-acting ISO 15552 cylinder with a Ø80mm bore, 450mm 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 3600 N.
- BoreØ80 mm
- Stroke450 mm
- Cylinder portG3/8
- TypeSingle rod (BSAI)
- Enclasp portG1/8
- Rod threadM20×1.5
- 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 BSAI80X450S
The AirTAC BSAI80X450-S is a double-acting ISO 15552 profile cylinder with a built-in spring-applied, air-released clamp-lock. It grips the 25 mm carbon steel rod at any position along its 450 mm stroke, delivering a static holding force of 3600 N. Operating pressure is 0.15-0.7 MPa, generating 2513 N push thrust at 0.5 MPa. The -S magnet enables position sensing via CMSE reed or DMSE electronic switches.
Remember that the 3600 N holding force is distinct from the 2513 N thrust; size the clamp against the static load, not the cylinder push force. The clamp operates via a third G1/8 enclasp port, separate from the 3/8 cylinder ports. Note that the variable air cushion only decelerates the piston near stroke ends; the clamp itself holds the load. Furthermore, the clamp locks only after the rod stops and requires balanced pressure to unlock safely.
Airtac BSAI Locking Clamp Cylinder BSAI80X450S Technical Specifications
| Model | Airtac BSAI Locking Clamp Cylinder BSAI80X450S |
|---|---|
| Series | BSAI ISO 15552 clamp-lock cylinder |
| Bore size | Ø80 mm |
| Stroke | 450 mm |
| Type | Single rod (BSAI), double acting |
| Cylinder port | G3/8 |
| Rod thread | M20×1.5 |
| Lock type | Spring-applied, air-released clamp (any position) |
|---|---|
| Static holding force | 3600 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 (Ø80 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 (Ø80mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 2513 N | 2268 N |
| 0.7 MPa (max) | 3519 N | — |
Push/pull as tabulated. Rated to the 0.7 MPa operating maximum for this series. The clamp holding force (3600 N) is separate from cylinder thrust. Size with a margin.
Where the Airtac BSAI Locking Clamp Cylinder BSAI80X450S Is Used
Vertical Axis Hold
Prevents gravity-driven drops on vertical strokes by clamping the rod securely at any point in the 450 mm travel.
Power Loss Safety
Spring-applied lock engages automatically during air pressure loss to freeze the payload safely mid-cycle.
Machining Position Lock
Holds a workpiece rigidly for machining or inspection without relying on continuous live air pressure.
Is the Airtac BSAI Locking Clamp Cylinder BSAI80X450S the Right Clamp-Lock?
Choose this 80 mm bore when you need substantial holding power mid-stroke. If your load is lighter, the 63 mm bore offers 1402 N thrust at 0.5 MPa and a 2200 N hold. If you only need end-of-stroke holding, a plain SAIL is simpler. For standard movement without locking, use a base SAI cylinder. The clamp is not a moving-rod brake; it locks only after the cylinder stops, and safety-critical applications need an independent measure.
This 450 mm stroke exceeds 300 mm, so an external guide is recommended to manage side loads. The 25 mm rod and M20x1.5 thread handle high bending moments. Replacement requires a single-rod, 80 mm bore, 450 mm stroke, PT ported unit with the correct mounting set (Basic, FA, FB, CA, CB, CR, LB, TC, TCM1, TCM2) and a -S magnet for CMSE/DMSE sensors.
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 BSAI80X450S FAQ
The integrated clamp-lock provides a static holding force of 3600 N. It grips the rod bidirectionally at any position along the stroke, but only after the cylinder has stopped moving.
The clamp uses a third G1/8 enclasp port to release. You must apply air to unlock it only after the pressures on both sides of the piston are balanced; otherwise, the rod can jump abruptly.
Related AirTAC Lock & Standard Cylinders
Request a Quote for Airtac BSAI Locking Clamp Cylinder BSAI80X450S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.