Airtac BSE Clamp Standard Cylinder BSE125X75
The AirTAC Airtac BSE Clamp Standard Cylinder BSE125X75 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, 75mm stroke, PT1/2 cylinder ports, G1/8 lock-release port.
- BoreØ125 mm
- Stroke75 mm
- Static holding force8600 N
- Lock typeSpring-lock / air-release
- Cylinder portPT1/2
- Lock-release portG1/8
About the Airtac BSE Clamp Standard Cylinder BSE125X75
The AirTAC BSE125X75 is a double-acting ISO 15552 profile cylinder featuring an integrated spring-applied, air-released rod lock. It supplies massive drive power, pushing with 8590 N at 0.7 MPa, while a separate collet mechanism delivers a bidirectional static holding force of 8600 N. Operating pressure is capped at 0.7 MPa, and the lock-release port is G1/8.
Because the clamp engages mechanically via spring force, the rod is safely locked in both directions the instant air is exhausted or an E-stop trips. This unit lacks a magnet (-S), so it does not support CMSE or DMSE position sensors. The ISO 15552 mounting interface ensures standard SE accessories fit perfectly, except for FTC.
Rod Lock — 8600 N Static Holding (Ø125mm)
A spring clamps the collet onto the rod, so the Airtac BSE Clamp Standard Cylinder BSE125X75 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 BSE125X75 Technical Specifications
| Model | Airtac BSE Clamp Standard Cylinder BSE125X75 |
|---|---|
| Series | BSE ISO 15552 rod-lock cylinder |
| Bore size | Ø125 mm |
| Stroke | 75 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 BSE125X75
| B | Rod-lock cylinder prefix. |
|---|---|
| SE | ISO 15552 standard double-acting body. |
| 125 | Bore size in mm. |
| ×75 | 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 BSE125X75 Is Used
Heavy Press Tooling
Secures massive 8600 N press fixtures. If shop air drops suddenly, the collet locks the 32 mm rod instantly, preventing heavy tooling from crashing downward.
Pallet Stop Gate
Halts heavy pallets on a high-mass conveyor. The 8590 N drive force stops the load, then the fail-safe lock holds it firmly in place during E-stop events.
Vertical Lift Arm
Suspends heavy vertical lift arms safely. The spring-applied collet clamps the rod mechanically, ensuring the arm does not drift downward when air is removed.
Is the Airtac BSE Clamp Standard Cylinder BSE125X75 the Right Cylinder?
Verify your suspended load requires less than the 8600 N holding force. If your application needs less drive power, the adjacent bore 100 offers 3927 N push at 0.5 MPa and a 5500 N hold; if you need more, 125 is the largest standard BSE size. Remember the lock is not a dynamic brake: engage it only after the rod fully stops, and release it only when piston pressures are balanced, allowing at least 0.5 s before moving. When replacing, match the 125 mm bore, 75 mm stroke, PT1/2 cylinder port, and mounting style.
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 BSE125X75 FAQ
The lock is spring-applied and air-released, providing an 8600 N static holding force with no live air. The drive forces are 6136 N push and 5734 N pull at 0.5 MPa, 8590 N push at 0.7 MPa, and a maximum drive of 876 kgf.
You must supply 0.15-0.7 MPa to the separate G1/8 release port. Release the lock only after the pressures on both sides of the piston are balanced, and wait at least 0.5 seconds before commanding cylinder movement to ensure full release.
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