Airtac BSAID Clamp Cylinder BSAID40X350S
The AirTAC Airtac BSAID Clamp Cylinder BSAID40X350S is a genuine double-acting ISO 15552 cylinder with a Ø40mm 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 900 N.
- BoreØ40 mm
- Stroke350 mm
- Cylinder portG1/4
- TypeDouble rod (BSAID)
- Enclasp portG1/8
- Rod threadM12×1.25
- 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 BSAID Clamp Cylinder BSAID40X350S
The AirTAC BSAID40X350-S is a double-acting ISO 15552 profile cylinder featuring a double-rod configuration and a spring-applied, air-released clamp-lock. It secures the load at any position along its 350 mm stroke, delivering a static holding force of 900 N. Because it is a double-rod unit, it provides equal thrust in both directions (528 N at 0.5 MPa), allowing a workpiece to mount on one end and a guide or position flag on the opposite end for dual-side anti-rotation.
It is vital to distinguish this 900 N static holding force from the 528 N thrust; the clamp sustains the load without live pressure, whereas thrust drives the motion. The lock engages bidirectionally only after the piston stops, meaning it cannot brake a moving rod. Furthermore, the variable air cushion at stroke ends only decelerates travel, while the actual holding is done by the clamp via a separate G1/8 enclasp port.
Airtac BSAID Clamp Cylinder BSAID40X350S Technical Specifications
| Model | Airtac BSAID Clamp Cylinder BSAID40X350S |
|---|---|
| Series | BSAI ISO 15552 clamp-lock cylinder |
| Bore size | Ø40 mm |
| Stroke | 350 mm |
| Type | Double rod (BSAID), double acting |
| Cylinder port | G1/4 |
| Rod thread | M12×1.25 |
| Lock type | Spring-applied, air-released clamp (any position) |
|---|---|
| Static holding force | 900 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 800 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 (Ø40 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa (max) | 880 N | — |
Equal force both directions (double rod). Rated to the 0.7 MPa operating maximum for this series. The clamp holding force (900 N) is separate from cylinder thrust. Size with a margin.
Where the Airtac BSAID Clamp Cylinder BSAID40X350S Is Used
Vertical Axis Hold
Secures a vertically lifted payload at any point in the 350 mm travel, preventing drops during a power loss while using the opposite rod end for a counterweight.
Machining Position Lock
Clamps a dual-sided workpiece fixture rigidly in place for machining or inspection, using the equal force both ways to maintain alignment.
Emergency Stop Safety
Holds the load securely mid-stroke when the system e-stops, though an independent safety measure is required if human safety is involved.
Is the Airtac BSAID Clamp Cylinder BSAID40X350S the Right Clamp-Lock?
Select this double-rod model when an application requires symmetrical force and a clamp that holds anywhere, unlike a SAIL cylinder which only locks at stroke ends. If 528 N of thrust is insufficient, stepping up to a 50 mm bore yields 825 N of pull force and a 1400 N holding force. If locking is unnecessary, a plain SAID cylinder suffices. The clamp locks only after the rod stops and requires balanced air pressure (0.15-0.7 MPa) to unlock safely; otherwise, the rod may jump, necessitating an independent safety measure for human safety.
This BSAID40X350-S includes a carbon steel rod, PT tapered ports, and an -S magnet for CMSE reed or DMSE electronic sensors. At 350 mm of stroke, the 16 mm rod needs external guidance to prevent side-loading. The double-rod design omits the FB, CA, CB, and CR mounts, accepting only Basic, FA, LB, TC, TCM1, and TCM2 brackets.
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 BSAID Clamp Cylinder BSAID40X350S FAQ
The clamp-lock provides a static holding force of 900 N at any position. The double-rod cylinder thrust is equal both ways at 528 N (at 0.5 MPa). Remember the holding force sustains the static load, while thrust moves it.
The spring-applied clamp locks the rod only after it has stopped; it cannot brake a moving rod. To unlock it safely via the G1/8 enclasp port, the air pressures on both sides of the piston must be balanced, or the rod may move abruptly.
Related AirTAC Lock & Standard Cylinders
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