Airtac BSAI Locking Clamp Cylinder BSAI80X200
The AirTAC Airtac BSAI Locking Clamp Cylinder BSAI80X200 is a genuine double-acting ISO 15552 cylinder with a Ø80mm bore, 200mm 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
- Stroke200 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 BSAI80X200
The AirTAC BSAI80X200 is a double-acting ISO 15552 profile cylinder featuring a built-in spring-applied, air-released clamp-lock. It secures the carbon steel piston rod at any position along its 200 mm stroke, delivering a static holding force of 3600 N. This bidirectional enclasp mechanism operates via a dedicated G1/8 unlock port, requiring 0.15-0.7 MPa to release the grip. The clamp functions independently of the variable air cushions, which only decelerate the piston near stroke ends.
It is crucial to distinguish this 3600 N holding force from the cylinder thrust, which reaches 3518 N at 0.7 MPa. You must size the clamp capacity against your static load, not the thrust. The 25 mm rod and M20x1.5 thread provide robust side-load resistance, while the lock engages only after the rod stops. It cannot brake a moving load, and unlocking requires balanced air pressures to prevent abrupt rod movement.
Airtac BSAI Locking Clamp Cylinder BSAI80X200 Technical Specifications
| Model | Airtac BSAI Locking Clamp Cylinder BSAI80X200 |
|---|---|
| Series | BSAI ISO 15552 clamp-lock cylinder |
| Bore size | Ø80 mm |
| Stroke | 200 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 BSAI80X200 Is Used
Vertical Load Holding
Prevents gravity-driven drops on vertical axes by clamping the rod securely at any intermediate stroke position during power loss.
Machining Position Lock
Freezes the workpiece in a specific intermediate location for machining or inspection without relying on continuous air pressure.
Emergency Mid-Stroke Stop
Holds the load safely at any point in the travel when the air supply is removed, providing bidirectional security.
Is the Airtac BSAI Locking Clamp Cylinder BSAI80X200 the Right Clamp-Lock?
Select this 80 mm bore model when a process requires mid-stroke holding that a plain SAI cannot provide, or when a SAIL stroke-end lock is insufficient because the load must freeze at variable positions. If the application needs less force, the 63 mm bore offers 1559 N thrust at 0.5 MPa and a 2200 N hold; if more is required, the 100 mm bore provides 3927 N thrust and a 5500 N hold. For this single-rod configuration, the mounting set includes Basic, FA, FB, CA, CB, CR, LB, TC, TCM1, and TCM2.
For safety, remember the clamp locks only after the rod stops and releases only under balanced pressure. Human-safety applications require an independent secondary measure. This unit uses PT ports, has no standard magnet (CMSE/DMSE sensors require an -S option), and the 200 mm stroke is well within standard limits, so no external side-load guide is strictly necessary for short strokes, though the 25 mm rod handles side loads well.
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 BSAI80X200 FAQ
The BSAI80X200 provides a static holding force of 3600 N. The clamp locks the rod at any position bidirectionally, but it only engages after the cylinder has stopped; it cannot brake a moving rod.
The clamp is spring-applied and air-released via a dedicated G1/8 port. To prevent the rod from jumping abruptly, the lock must only be released when the air pressures on both sides of the piston are balanced or the cylinder has stopped.
Related AirTAC Lock & Standard Cylinders
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