Airtac BSAID Clamp Cylinder BSAID40X500S
The AirTAC Airtac BSAID Clamp Cylinder BSAID40X500S is a genuine double-acting ISO 15552 cylinder with a Ø40mm bore, 500mm 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
- Stroke500 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 BSAID40X500S
The AirTAC BSAID40X500-S is a double-acting ISO 15552 profile cylinder featuring a double-rod layout and a spring-applied, air-released clamp-lock mechanism. It provides a static holding force of 900 N, gripping the rod securely at any position along its 500 mm travel. Because it is a double-rod unit, it delivers equal thrust in both directions (528 N at 0.5 MPa), making it ideal for mounting a workpiece on one end and a counterweight or position flag on the other. A carbon steel rod and PT thread ports are standard.
It is vital to distinguish the 900 N static holding force from the 528 N thrust; you must size the clamp against the static load, not the cylinder's motive force. The clamp operates via a dedicated G1/8 enclasp port, separate from the 1/4 cylinder ports, and requires 0.15-0.7 MPa to release. Remember that the variable air cushion only decelerates the piston near stroke ends; the clamp is the true load-holding device. Furthermore, the clamp locks only after the rod has stopped, meaning it cannot brake a moving load.
Airtac BSAID Clamp Cylinder BSAID40X500S Technical Specifications
| Model | Airtac BSAID Clamp Cylinder BSAID40X500S |
|---|---|
| Series | BSAI ISO 15552 clamp-lock cylinder |
| Bore size | Ø40 mm |
| Stroke | 500 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 BSAID40X500S Is Used
Vertical Axis Hold
Locks a suspended payload at any point in a 500 mm vertical drop to prevent uncommanded descent during an air loss event.
Machining Position Lock
Freezes a double-rod carriage securely mid-stroke so a workpiece remains rigid while a secondary operation is performed.
Dual-Side Tooling
Uses the opposing rod end to mount a counterweight or guide flag, ensuring balanced force while the clamp secures the assembly.
Is the Airtac BSAID Clamp Cylinder BSAID40X500S the Right Clamp-Lock?
Choose this double-rod model when a load must be held mid-stroke rather than only at the end of travel, a scenario where a SAIL stroke-end lock is insufficient. If live position holding is unnecessary, a plain SAID cylinder suffices. For higher load demands, stepping up to a 50 mm bore increases thrust to 825 N and holding force to 1400 N. Conversely, a 32 mm bore drops thrust to 345 N and holding force to 600 N.
When replacing, match the double-rod configuration, 40 mm bore, 500 mm stroke, PT port threads, and the correct mounting set. BSAID supports Basic, FA, LB, TC, TCM1, and TCM2 mounts, omitting the FB, CA, CB, and CR brackets. The included -S magnet works with AirTAC CMSE reed and DMSE solid-state sensors. Because the 500 mm stroke is long, an external guide is recommended to manage side loads. Always ensure pressures are balanced before unlocking, or the rod may jump abruptly; safety-critical applications require an independent backup measure.
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 BSAID40X500S FAQ
The integrated clamp-lock provides a static holding force of 900 N. It grips the carbon steel rod bidirectionally at any position along the 500 mm stroke, but it only engages after the cylinder has stopped moving.
The lock is released by supplying 0.15-0.7 MPa to the G1/8 enclasp port, but only after the air pressures on both sides of the piston are balanced. Releasing without balancing causes the rod to jump abruptly, so an independent safety measure is required for human-safety loads.
Related AirTAC Lock & Standard Cylinders
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