Airtac BSAI Locking Clamp Cylinder BSAI100X900
The AirTAC Airtac BSAI Locking Clamp Cylinder BSAI100X900 is a genuine double-acting ISO 15552 cylinder with a Ø100mm bore, 900mm 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 5500 N.
- BoreØ100 mm
- Stroke900 mm
- Cylinder portG1/2
- 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 BSAI100X900
The AirTAC BSAI100X900 is a double-acting ISO 15552 profile cylinder equipped with a spring-applied, air-released clamp-lock mechanism. It delivers a substantial 3927 N push thrust at 0.5 MPa (5497 N at 0.7 MPa), while the integrated enclasp gripper provides a static holding force of 5500 N. Crucially, buyers must distinguish between these two values: the cylinder thrust moves the load, but the clamp holding force is what secures the static payload. You must size the holding capacity against the load weight, not the thrust.
Unlike standard air cushions that only decelerate the piston near the stroke ends, the mechanical clamp physically bites the 25 mm carbon steel rod to freeze it at any position. This bidirectional lock engages via a third G1/8 enclasp port, operating reliably within the 0.15-0.7 MPa pressure range. Note that the lock functions strictly as a static hold; it cannot brake a moving rod and must only be released when cylinder pressures are balanced to prevent sudden rod jumping.
Airtac BSAI Locking Clamp Cylinder BSAI100X900 Technical Specifications
| Model | Airtac BSAI Locking Clamp Cylinder BSAI100X900 |
|---|---|
| Series | BSAI ISO 15552 clamp-lock cylinder |
| Bore size | Ø100 mm |
| Stroke | 900 mm |
| Type | Single rod (BSAI), double acting |
| Cylinder port | G1/2 |
| Rod thread | M20×1.5 |
| Lock type | Spring-applied, air-released clamp (any position) |
|---|---|
| Static holding force | 5500 N |
| Enclasp / unlock port | G1/8 |
| Operating pressure | 0.15 – 0.7 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 500 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 (Ø100 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 (Ø100mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 3927 N | 3682 N |
| 0.7 MPa (max) | 5498 N | — |
Push/pull as tabulated. Rated to the 0.7 MPa operating maximum for this series. The clamp holding force (5500 N) is separate from cylinder thrust. Size with a margin.
Where the Airtac BSAI Locking Clamp Cylinder BSAI100X900 Is Used
Vertical Z-Axis Holding
Secures heavy vertical lifting stages at any point in the 900 mm travel, preventing gravity-induced drops during air pressure loss.
Machining Position Freeze
Locks a workpiece rigidly in place mid-stroke for machining or inspection operations, absorbing cutting vibrations without relying on live air pressure.
Emergency Drop Protection
Acts as a fail-safe clamp that instantly engages the rod when supply pressure drops, holding the load securely until system pressure is restored.
Is the Airtac BSAI Locking Clamp Cylinder BSAI100X900 the Right Clamp-Lock?
Select this 100 mm bore model when a process demands high force combined with mid-stroke positioning, stepping up from a BSAI80X900 (which offers 2513 N thrust and 3600 N holding force). If full-stroke end holding is all that is required, a simpler SAIL cylinder suffices, but the BSAI is essential for locking anywhere along the 900 mm travel. For replacement, verify the single-rod configuration, PT tapered port threads, and the 1/2 inch cylinder ports. It supports Basic, FA, FB, CA, CB, CR, LB, TC, TCM1, and TCM2 mounts. Because this is a non-magnet variant, position sensing via CMSE or DMSE switches is not supported without modification.
Given the 900 mm stroke, the M20x1.5 rod thread and 25 mm diameter provide robust structural integrity, but an external guide is highly recommended to prevent excessive side-loading on the extended rod. Always ensure the cylinder has completely stopped before engaging the clamp, and apply balanced air pressure to the unlock port to avoid abrupt movement. For safety-critical human loads, an independent mechanical safety measure is required.
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 BSAI100X900 FAQ
The BSAI100X900 features a static holding force of 5500 N. The spring-applied clamp can secure the rod at any position along the 900 mm stroke, independent of the cylinder's 5497 N maximum thrust at 0.7 MPa.
The clamp locks only after the cylinder has completely stopped; it cannot brake a moving rod. To unlock it safely via the G1/8 port, the air pressures on both sides of the piston must be balanced, otherwise the rod may jump abruptly. An independent safety measure is required for human safety applications.
Related AirTAC Lock & Standard Cylinders
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