Airtac BSAID Clamp Cylinder BSAID40X225
The AirTAC Airtac BSAID Clamp Cylinder BSAID40X225 is a genuine double-acting ISO 15552 cylinder with a Ø40mm bore, 225mm 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
- Stroke225 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 BSAID40X225
The AirTAC BSAID40X225 is a double-acting ISO 15552 profile cylinder featuring a double-rod layout and an integrated spring-applied, air-released clamp-lock. It delivers an equal thrust of 528N in both directions at 0.5 MPa. A defining trait of this enclasp mechanism is that it locks the rod at any position along the 225mm travel, providing a documented static holding force of 900N. It is crucial to distinguish this holding force from the cylinder's thrust—the clamp resists a static load independently of pneumatic thrust, so you must size the holding capacity against the workpiece weight, not the push force.
Because the rod extends from both ends, operators can mount the workpiece on one side and a counterweight or position flag on the opposite end to achieve dual-side guidance and anti-rotation. The clamp requires a third G1/8 enclasp port to release, functioning only after the cylinder has stopped moving. Remember that the variable air cushion merely decelerates the piston near the stroke ends; it is the mechanical clamp, not the cushion, that secures the load.
Airtac BSAID Clamp Cylinder BSAID40X225 Technical Specifications
| Model | Airtac BSAID Clamp Cylinder BSAID40X225 |
|---|---|
| Series | BSAI ISO 15552 clamp-lock cylinder |
| Bore size | Ø40 mm |
| Stroke | 225 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 BSAID40X225 Is Used
Vertical Load Holding
Holds a lifted workpiece securely at any point on a vertical axis, preventing gravity-driven drops when air pressure is removed.
Machining Position Lock
Clamps the double-rod in place during drilling or milling, ensuring the part stays fixed without relying on continuous fluid pressure.
Power Loss Safety
The spring-applied enclasp engages automatically during an air supply failure, safely freezing the mechanism exactly where it stopped.
Is the Airtac BSAID Clamp Cylinder BSAID40X225 the Right Clamp-Lock?
Choose this double-rod enclasp model when a load must be held mid-stroke without live pressure, unlike a plain SAID which only moves the load. If you need higher resistance, stepping up to the 50mm bore provides a 1400N holding force and 825N pull thrust; if less is required, the 32mm bore offers 600N holding and 345N thrust. The 16mm carbon steel rod and M12x1.25 thread handle side loads well, but for this 225mm stroke an external guide is still recommended for heavy offsets.
This clamp locks bidirectionally but only after the rod stops; it cannot brake a moving piston. Unlocking requires balanced air pressure on both sides via the G1/8 port, or the rod may jump abruptly. For human-safety-critical holds, add an independent mechanical measure. This unit uses PT ports, has no magnet, and accepts Basic, FA, LB, TC, TCM1, or TCM2 mounts (omitting FB/CA/CB/CR).
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 BSAID40X225 FAQ
The integrated enclasp mechanism provides a static holding force of 900N. It locks the rod bidirectionally at any position along the 225mm stroke, but only engages after the cylinder has come to a complete stop.
The clamp is released by supplying air to the third G1/8 enclasp port. You must balance the air pressure on both sides of the piston first; otherwise, releasing the clamp can cause the rod to jump abruptly. An independent safety measure is required for human-safety applications.
Related AirTAC Lock & Standard Cylinders
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