Airtac BSAI Locking Clamp Cylinder BSAI80X175
The AirTAC Airtac BSAI Locking Clamp Cylinder BSAI80X175 is a genuine double-acting ISO 15552 cylinder with a Ø80mm bore, 175mm 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
- Stroke175 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 BSAI80X175
The AirTAC BSAI80X175 is a double-acting ISO 15552 profile cylinder featuring a built-in spring-applied, air-released clamp-lock. It provides a robust static holding force of 3600 N, gripping the 25 mm carbon steel rod to secure the load at any position along the 175 mm stroke. The base cylinder generates 2513 N of thrust at 0.5 MPa (or 3518 N at the 0.7 MPa practical maximum), but buyers must distinguish between thrust and holding force: thrust moves the load, while the 3600 N clamp force sustains it statically without requiring live air pressure.
This enclasp mechanism operates via a dedicated G1/8 unlock port, requiring 0.15-0.7 MPa to release the grip. It functions bidirectionally, locking securely whether the rod was extending or retracting. It is crucial to understand that the variable air cushion only decelerates the piston near the stroke end; the clamp itself is the sole device holding the load. Furthermore, the lock engages only after the cylinder has completely stopped, meaning it cannot brake a moving rod.
Airtac BSAI Locking Clamp Cylinder BSAI80X175 Technical Specifications
| Model | Airtac BSAI Locking Clamp Cylinder BSAI80X175 |
|---|---|
| Series | BSAI ISO 15552 clamp-lock cylinder |
| Bore size | Ø80 mm |
| Stroke | 175 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 BSAI80X175 Is Used
Vertical Axis Holding
Prevents gravity-driven drops on vertical lifts by clamping the 25 mm rod at any point in the 175 mm travel, sustaining up to 3600 N without live pressure.
Power Outage Safety
The spring-applied enclasp engages automatically upon air loss, freezing the load safely mid-stroke to protect operators and tooling.
Machining Position Hold
Secures a workpiece firmly at a custom intermediate stroke position for drilling or inspection, operating completely independently from the end-stroke air cushions.
Is the Airtac BSAI Locking Clamp Cylinder BSAI80X175 the Right Clamp-Lock?
Select this 80 mm bore model when an application demands 3600 N of static holding capacity alongside 2513 N of thrust at 0.5 MPa. If your load requires less holding force, stepping down to the 63 mm bore provides 1402 N of thrust and a 2200 N clamp. Conversely, heavier static loads up to 5500 N necessitate the 100 mm bore. Choose this BSAI clamp-lock over a SAIL cylinder when you need to hold the load at an intermediate stroke position rather than just at the end of travel. If no mid-stroke holding is required, a plain SAI cylinder suffices.
For safe operation, remember the clamp locks only after the rod stops and must be unlocked with balanced pressures on both sides of the piston to prevent the rod from jumping abruptly. Safety-critical applications require an additional independent measure. This single-rod configuration accepts Basic, FA, FB, CA, CB, CR, LB, TC, TCM1, and TCM2 mounts. It uses PT tapered ports (3/8 inch cylinder port, G1/8 enclasp port). The M20x1.5 rod thread and 25 mm rod diameter provide excellent side-load resilience. Sensors are not included (no -S magnet specified).
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 BSAI80X175 FAQ
It uses a spring-applied, air-released mechanism to grip the piston rod at any position along the 175 mm stroke, providing a static holding force of 3600 N. It operates bidirectionally and engages only after the cylinder has stopped moving.
The clamp must be unlocked by applying 0.15-0.7 MPa to the G1/8 enclasp port only after the air pressures on both sides of the piston are balanced. If pressures are unbalanced, the rod can jump abruptly. Safety-critical loads require an additional independent safety measure.
Related AirTAC Lock & Standard Cylinders
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