Airtac BSE Clamp Standard Cylinder BSE125X125
The AirTAC Airtac BSE Clamp Standard Cylinder BSE125X125 is a genuine double-acting ISO 15552 cylinder with an integrated spring-applied, air-released ROD LOCK. If air is cut or an E-stop is hit, the collet clamps the Ø32mm rod and holds up to 8600 N in either direction — no drift. Ø125mm bore, 125mm stroke, PT1/2 cylinder ports, G1/8 lock-release port.
- BoreØ125 mm
- Stroke125 mm
- Static holding force8600 N
- Lock typeSpring-lock / air-release
- Cylinder portPT1/2
- Lock-release portG1/8
About the Airtac BSE Clamp Standard Cylinder BSE125X125
The AirTAC BSE125X125 is a double-acting ISO 15552 profile cylinder featuring an integrated spring-applied, air-released rod lock. A collet mechanism delivers a bidirectional static holding force of 8600 N. If air pressure drops or an E-stop trips, the lock engages automatically to hold the load safely in place.
Operating pressure is capped at 0.15-0.7 MPa, and the lock requires a separate G1/8 release port to unlock. The drive force is rated for a maximum of 876 kgf at 0.7 MPa, which is entirely separate from the 8600 N holding force. This specific SKU lacks a magnet, meaning position sensing via CMSE or DMSE sensors is not supported.
Rod Lock — 8600 N Static Holding (Ø125mm)
A spring clamps the collet onto the rod, so the Airtac BSE Clamp Standard Cylinder BSE125X125 holds its position in both directions when air is lost, exhausted or an E-stop trips. Apply 0.15–0.7 MPa to the G1/8 release port to unlock. Engage the lock only after the rod has stopped (it is not a dynamic brake), and release only when the pressures on both sides of the piston are balanced. Allow at least 0.5 s for full release before moving.
Airtac BSE Clamp Standard Cylinder BSE125X125 Technical Specifications
| Model | Airtac BSE Clamp Standard Cylinder BSE125X125 |
|---|---|
| Series | BSE ISO 15552 rod-lock cylinder |
| Bore size | Ø125 mm |
| Stroke | 125 mm |
| Static holding force | 8600 N |
| Cylinder port | PT1/2 |
| Lock-release port | G1/8 |
| Rod thread | M27×2 |
|---|---|
| Operating pressure | 0.15 – 0.7 MPa |
| Unlocking pressure | 0.15 – 0.7 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 500 mm/s |
| Cushion | Adjustable, 40 mm |
| Max stroke | Up to 1000 mm |
Specifications follow the official AirTAC BSE datasheet. The lock uses the SE standard body; SE mounting accessories fit BSE except FTC. Port options: PT (standard) / G (BSPP); lock-release port is G1/8.
Theoretical Output Force (Ø125mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 6136 N | 5734 N |
| 0.7 MPa (max) | 8590 N | — |
| Max drive (@0.7 MPa) | 876 kgf | |
Drive force is separate from the 8600 N static holding force of the lock. BSE operates up to 0.7 MPa. Size with a safety margin.
Model Code: Airtac BSE Clamp Standard Cylinder BSE125X125
| B | Rod-lock cylinder prefix. |
|---|---|
| SE | ISO 15552 standard double-acting body. |
| 125 | Bore size in mm. |
| ×125 | Stroke length in mm. |
| -S | Optional built-in magnet for CMSE / DMSE sensor sensing. |
Thread: PT (blank) / G. Mounting (BSE): Basic, LB, FA, FB, CA, CB, CR, TC (FTC is not available on BSE). Related: SE (no lock), BSED (double-rod rod lock). Sensors CMSE/DMSE fit magnetic BSE.
Where the Airtac BSE Clamp Standard Cylinder BSE125X125 Is Used
Heavy Vertical Lifts
Secures 8600 N vertical press platens or heavy lifting stages, preventing catastrophic drops if compressed air is lost mid-cycle.
Large Press Tooling
Holds heavy stamping or forming tooling rigidly in place during an emergency stop, ensuring the 876 kgf drive force does not cause unintended movement.
Overhead Crane Stops
Locks heavy material handling gantries in position during maintenance, relying on the collet clamp rather than live air pressure to hold the load.
Is the Airtac BSE Clamp Standard Cylinder BSE125X125 the Right Cylinder?
Verify your suspended load requires less than the 8600 N holding force. If you need less drive force, the 100 mm bore offers 3927 N push at 0.5 MPa and 5500 N hold. For heavier demands, the 125 mm bore provides 6136 N push at 0.5 MPa and 8600 N hold. Always engage the lock only after the rod stops, and release it only when piston pressures are balanced, allowing at least 0.5 seconds before moving. When replacing, match the 125 mm bore, 125 mm stroke, PT1/2 port, and mounting style. SE mounting accessories fit except FTC.
Quick checklist
- ✓ Load to hold ≤ 8600 N?
- ✓ Fail-safe hold on air loss / E-stop needed
- ✓ Lock engaged only when stopped
- ✓ G1/8 release-air line available
- ✓ Magnet (-S) for CMSE/DMSE sensors?
Installation & Safety Notes
- check Engage the lock only after the rod has stopped — not as a dynamic brake.
- check Release only when both piston sides are pressure-balanced.
- check Allow ≥0.5 s for full release before commanding motion.
- check Feed the G1/8 release port with 0.15–0.7 MPa clean air.
- check Add safety-rated controls for man-rated / overhead loads.
- check Use SE mounting accessories (FTC excepted).
Airtac BSE Clamp Standard Cylinder BSE125X125 FAQ
The spring-applied collet engages instantly, providing a 8600 N bidirectional static hold. The rod stays locked at its stopped position until air is restored to the G1/8 release port.
The drive force is 6136 N push and 5734 N pull at 0.5 MPa, and 8590 N push at 0.7 MPa, equating to 876 kgf max drive. This drive force is separate from the 8600 N static holding force.
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