Airtac BSAI Locking Clamp Cylinder BSAI100X350S
The AirTAC Airtac BSAI Locking Clamp Cylinder BSAI100X350S is a genuine double-acting ISO 15552 cylinder with a Ø100mm bore, 350mm 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
- Stroke350 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 BSAI100X350S
The AirTAC BSAI100X350-S is a double-acting ISO 15552 profile cylinder equipped with a spring-applied, air-released enclasp mechanism that locks the single carbon steel rod at any position along its 350 mm travel. It delivers a static holding force of 5500 N and generates 3927 N of push thrust at 0.5 MPa (5497 N at the 0.7 MPa practical maximum). You must size the holding force against your static load, because the 5500 N clamp rating is a distinct quantity from the cylinder thrust. The -S magnet pairs precisely with AirTAC CMSE reed and DMSE solid-state sensors.
This bidirectional clamp engages only after the piston has stopped moving; it is not a dynamic brake. The lock releases via a separate G1/8 enclasp port, requiring 0.15-0.7 MPa of air pressure. Remember that the variable air cushions merely decelerate the rod near the stroke ends, while the clamp is what actually secures the load.
Airtac BSAI Locking Clamp Cylinder BSAI100X350S Technical Specifications
| Model | Airtac BSAI Locking Clamp Cylinder BSAI100X350S |
|---|---|
| Series | BSAI ISO 15552 clamp-lock cylinder |
| Bore size | Ø100 mm |
| Stroke | 350 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 BSAI100X350S Is Used
Mid-Stroke Vertical Hold
Freezes a heavy vertical lift at any intermediate height using the 5500 N clamp, preventing sudden drops during operation pauses.
Power-Loss Safety Stop
Spring-applied enclasp mechanism secures the carbon steel rod instantly upon air pressure loss, holding the load safely anywhere in the 350 mm travel.
Machining Position Lock
Locks the workpiece firmly in place for secondary processing or inspection, ensuring the 3927 N thrust does not shift the load during work.
Is the Airtac BSAI Locking Clamp Cylinder BSAI100X350S the Right Clamp-Lock?
Step down to the 80 mm bore if your layout permits, which provides 2513 N push thrust at 0.5 MPa and a 3600 N holding force. Choose this BSAI100X350-S over a SAIL stroke-end lock when you must freeze the load mid-travel rather than only at the extremes. If you just need basic actuation without position holding, a plain SAI cylinder is sufficient. For any safety-critical drop prevention, add an independent mechanical measure because this clamp cannot arrest a moving rod.
To replace a unit, match the 100 mm bore, 350 mm stroke, and PT tapered port threads. The 1/2 inch cylinder port stays distinct from the G1/8 unlock port. Mount using the single-rod BSAI set: Basic, FA, FB, CA, CB, CR, LB, TC, TCM1, or TCM2. Because the 350 mm stroke is long, use an external guide to prevent side-load wear on the 25 mm rod and M20x1.5 thread.
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 BSAI100X350S FAQ
The spring-applied clamp-lock provides a static holding force of 5500 N. It locks the rod at any position bidirectionally, but only after the cylinder has stopped moving.
The lock is released by applying 0.15-0.7 MPa of air to the G1/8 enclasp port. Pressures on both sides of the piston must be balanced during release, or the rod can jump abruptly.
Related AirTAC Lock & Standard Cylinders
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