Airtac BSE Clamp Standard Cylinder BSE125X75S
The AirTAC Airtac BSE Clamp Standard Cylinder BSE125X75S 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 BSE125X75S
The AirTAC BSE125X75S is a double-acting ISO 15552 profile cylinder equipped with an integrated spring-applied, air-released rod lock. It delivers a massive 8590 N push force at 0.7 MPa, alongside a bidirectional static holding force of 8600 N. The lock uses a clamping collet that secures the 32 mm piston rod instantly if air pressure is exhausted or an E-stop is triggered.
This fail-safe mechanism is designed for static holding, not dynamic braking. You must engage the lock only after the rod has fully stopped, and release it only when pressures are balanced, allowing at least 0.5 s for full release. Operating pressure is capped at 0.7 MPa, and the lock is supplied via a separate G1/8 release port. The -S option includes a magnet for CMSE reed and DMSE electronic sensors.
Rod Lock — 8600 N Static Holding (Ø125mm)
A spring clamps the collet onto the rod, so the Airtac BSE Clamp Standard Cylinder BSE125X75S 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 BSE125X75S Technical Specifications
| Model | Airtac BSE Clamp Standard Cylinder BSE125X75S |
|---|---|
| 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 BSE125X75S
| 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 BSE125X75S Is Used
Heavy Press Tooling Clamp
Secures 8600 N vertical press tooling. The spring-applied collet prevents the 8590 N drive load from dropping if shop air is suddenly lost during a press cycle.
Automated Welding Fixture
Holds heavy chassis components in place during robotic welding. The fail-safe lock maintains the exact position when the 0.7 MPa air supply is removed for safety.
Pallet Stopper Gate
Blocks heavy pallets on a high-mass conveyor line. The collet locks the rod with 8600 N of holding force during an E-stop, keeping the gate rigid in both directions.
Is the Airtac BSE Clamp Standard Cylinder BSE125X75S the Right Cylinder?
Verify your suspended load does not exceed the 8600 N holding force. If your application needs less drive force, step down to the 100 mm bore, which offers a 3927 N push at 0.5 MPa and a 5500 N hold. If you need more force, the 125 mm is the largest available BSE size. Always engage the lock only after the rod stops, and release it only when piston pressures are balanced, allowing 0.5 s. For the 75 mm stroke, side-load is minimal, but ensure standard SE mounting accessories are used (except FTC, which is unavailable). Confirm your replacement needs a PT1/2 cylinder port, G1/8 release port, and M27x2 rod thread.
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 BSE125X75S FAQ
The drive force is 6136 N push and 5734 N pull at 0.5 MPa, and 8590 N push at 0.7 MPa (max 876 kgf). The static holding force of the integrated rod lock is 8600 N.
The lock is spring-applied and air-released. If air is lost or exhausted, the collet clamps the rod and holds it bidirectionally at whatever position it stopped. It is a static hold, not a dynamic brake, so engage it only after the rod stops.
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