Airtac BSAID Clamp Cylinder BSAID50X225
The AirTAC Airtac BSAID Clamp Cylinder BSAID50X225 is a genuine double-acting ISO 15552 cylinder with a Ø50mm 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 1400 N.
- BoreØ50 mm
- Stroke225 mm
- Cylinder portG1/4
- TypeDouble rod (BSAID)
- Enclasp portG1/8
- Rod threadM16×1.5
About the Airtac BSAID Clamp Cylinder BSAID50X225
The AirTAC BSAID50X225 is a double-acting ISO 15552 profile cylinder featuring a double-rod design and a built-in clamp-lock mechanism. A spring-applied, air-released gripper clamps the 20mm carbon steel rod to hold the load at any position along the 225mm stroke, delivering a static holding force of 1400 N. Because it is a double-rod unit, the thrust is equal in both directions at 825 N (0.5 MPa). It is crucial to distinguish this holding force from the cylinder thrust: the clamp's 1400 N resists a static load, whereas the 825 N thrust drives the motion.
The dual-rod layout serves a specific mechanical purpose beyond equal force: one end mounts the workpiece while the opposite end attaches a guide, counterweight, or position flag for dual-side guidance and anti-rotation. The clamp locks only after the rod has completely stopped; it cannot brake a moving load. Unlocking requires balanced air pressure on both sides of the piston via the dedicated G1/8 enclasp port, preventing abrupt rod jumps. Additionally, the variable air cushions at stroke ends only decelerate the piston—they do not hold the load.
Airtac BSAID Clamp Cylinder BSAID50X225 Technical Specifications
| Model | Airtac BSAID Clamp Cylinder BSAID50X225 |
|---|---|
| Series | BSAI ISO 15552 clamp-lock cylinder |
| Bore size | Ø50 mm |
| Stroke | 225 mm |
| Type | Double rod (BSAID), double acting |
| Cylinder port | G1/4 |
| Rod thread | M16×1.5 |
| Lock type | Spring-applied, air-released clamp (any position) |
|---|---|
| Static holding force | 1400 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 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 (Ø50 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa (max) | 1374 N | — |
Equal force both directions (double rod). Rated to the 0.7 MPa operating maximum for this series. The clamp holding force (1400 N) is separate from cylinder thrust. Size with a margin.
Where the Airtac BSAID Clamp Cylinder BSAID50X225 Is Used
Vertical Lift Holding
Secures a raised payload at any height along the vertical axis to prevent gravity-driven drops during cycle pauses.
Power-Loss Safety
Engages instantly upon air pressure loss to freeze the dual rods in place, protecting the work area from sudden collapses.
Machining Position Lock
Holds the workpiece rigidly at a custom intermediate stroke for precise drilling or inspection without drifting.
Is the Airtac BSAID Clamp Cylinder BSAID50X225 the Right Clamp-Lock?
Choose this 50mm bore model when an application requires 825 N of thrust in both directions combined with mid-stroke holding. If your load demands less force, the 40mm bore offers 528 N thrust and a 900 N hold; for heavier loads, the 63mm bore provides 1402 N thrust and a 2200 N hold. Select the BSAID50X225 over a stroke-end-only SAIL cylinder when you must secure the load anywhere in the travel, not just at the limits. If no clamping is needed, a plain SAID cylinder suffices.
For safety-critical positioning, add an independent external safety measure, as the clamp is not a moving-rod brake. This model features PT tapered ports (1/4 inch cylinder ports, G1/8 enclasp port). The BSAID mounting set omits FB, CA, CB, and CR brackets, accepting only Basic, FA, LB, TC, TCM1, and TCM2. The 20mm rod thread handles side loads well, but for this 225mm stroke, an external guide is recommended to prevent binding.
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 BSAID50X225 FAQ
The integrated clamp-lock provides a static holding force of 1400 N. It clamps the rod bidirectionally at any position, but only after the cylinder has stopped moving.
The clamp is spring-applied and air-released via a separate G1/8 enclasp port. You must balance the air pressure on both sides of the piston before unlocking, or the rod may jump abruptly.
Related AirTAC Lock & Standard Cylinders
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