Airtac BSAID Clamp Cylinder BSAID125X175S
The AirTAC Airtac BSAID Clamp Cylinder BSAID125X175S is a genuine double-acting ISO 15552 cylinder with a Ø125mm bore, 175mm 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 8600 N.
- BoreØ125 mm
- Stroke175 mm
- Cylinder portG1/2
- TypeDouble rod (BSAID)
- Enclasp portG1/8
- Rod threadM27×2
About the Airtac BSAID Clamp Cylinder BSAID125X175S
The AirTAC BSAID125X175-S is a double-acting ISO 15552 profile cylinder featuring a double-rod configuration and a built-in spring-applied, air-released clamp-lock. It delivers an equal thrust of 5734 N in both directions at 0.5 MPa, while the integrated enclasp mechanism provides a robust static holding force of 8600 N. A crucial distinction for sizing is that this 8600 N holding force is a separate metric from the cylinder thrust; you must size the clamp capacity against the static load, not the pneumatic push force. The clamp locks the rod securely at any position along the 175 mm stroke and holds bidirectionally.
Because it is a double-rod actuator, one end can mount the primary workpiece while the opposite end carries a guide, counterweight, or position flag, delivering dual-side guidance and anti-rotation benefits. The unit operates at 0.15-0.7 MPa and requires a third G1/8 enclasp port to release the lock. Remember that the variable air cushion only decelerates the piston near stroke ends; the clamp itself is what actually holds the load. Furthermore, the clamp engages only after the rod has stopped moving and cannot serve as a dynamic brake.
Airtac BSAID Clamp Cylinder BSAID125X175S Technical Specifications
| Model | Airtac BSAID Clamp Cylinder BSAID125X175S |
|---|---|
| Series | BSAI ISO 15552 clamp-lock cylinder |
| Bore size | Ø125 mm |
| Stroke | 175 mm |
| Type | Double rod (BSAID), double acting |
| Cylinder port | G1/2 |
| Rod thread | M27×2 |
| Lock type | Spring-applied, air-released clamp (any position) |
|---|---|
| Static holding force | 8600 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 (Ø125 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 (Ø125mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 6136 N | 5734 N |
| 0.7 MPa (max) | 8590 N | — |
Equal force both directions (double rod). Rated to the 0.7 MPa operating maximum for this series. The clamp holding force (8600 N) is separate from cylinder thrust. Size with a margin.
Where the Airtac BSAID Clamp Cylinder BSAID125X175S Is Used
Vertical Load Holding
Freezes heavy vertical platens securely at any intermediate height using the 8600 N clamp, preventing gravity-driven drops during a sudden air loss.
Machining Position Lock
Locks a dual-sided workpiece carrier dead in place for high-force machining or inspection operations, utilizing the rear rod for a secondary position flag.
Mid-Stroke Safety Stop
Provides a bidirectional emergency hold anywhere in the travel path if the machine enters a fault state, engaging only after the actuator has fully stopped.
Is the Airtac BSAID Clamp Cylinder BSAID125X175S the Right Clamp-Lock?
Choose this double-rod clamp-lock model when an application demands equal force in both directions alongside multi-axis load stabilization or a secondary tool mount on the rear rod. If your load requires less than 5734 N of thrust or 8600 N of holding capacity, stepping down to the 100 mm bore (3681 N thrust, 5500 N hold) saves space and air. Conversely, this 125 mm bore is the largest available in the series. Choose this BSAID over a stroke-end-only SAIL cylinder when you must freeze the load securely at an intermediate point in the travel. If you only need standard extension and retraction without mid-stroke holding, a plain SAID cylinder suffices.
When replacing this actuator, match the double-rod configuration, 125 mm bore, 175 mm stroke, PT threaded ports (1/2 inch cylinder port plus the G1/8 enclasp port), and the -S magnet for CMSE reed and DMSE electronic sensors. The BSAID mounting set omits FB, CA, CB, and CR options, accepting only Basic, FA, LB, TC, TCM1, and TCM2. The substantial 32 mm rod and M27x2 thread handle high side loads well, though long unsupported strokes still need an external guide. Always ensure the clamp locks only after the cylinder stops, and unlock it only with balanced piston pressures to prevent abrupt rod jumps; safety-critical loads require an additional independent 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 BSAID125X175S FAQ
The clamp-lock provides a static holding force of 8600 N. It is a spring-applied, air-released mechanism that locks the rod at any position bidirectionally. It engages only after the cylinder has stopped moving and cannot brake a dynamic load.
The clamp must be released by applying air to the G1/8 enclasp port only after the air pressures on both sides of the piston are balanced. If pressures are unbalanced upon release, the rod can jump abruptly. Human safety applications require an independent backup measure.
Related AirTAC Lock & Standard Cylinders
Request a Quote for Airtac BSAID Clamp Cylinder BSAID125X175S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.