Airtac BSE Clamp Standard Cylinder BSE125X80
The AirTAC Airtac BSE Clamp Standard Cylinder BSE125X80 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, 80mm stroke, PT1/2 cylinder ports, G1/8 lock-release port.
- BoreØ125 mm
- Stroke80 mm
- Static holding force8600 N
- Lock typeSpring-lock / air-release
- Cylinder portPT1/2
- Lock-release portG1/8
About the Airtac BSE Clamp Standard Cylinder BSE125X80
The AirTAC BSE125X80 is a double-acting ISO 15552 profile cylinder with an integrated spring-applied, air-released rod lock. A collet clamps the 32 mm piston rod, providing a bidirectional fail-safe holding force of 8600 N. If air pressure drops or an E-stop trips, the rod stays locked at its exact position without live air.
Operating pressure is capped at 0.7 MPa for both the drive and the G1/8 lock-release port. The cylinder features adjustable air cushions at both ends, but the collet lock provides the actual holding power. This SKU has no magnet, so position sensing is not available without modifying the configuration.
Rod Lock — 8600 N Static Holding (Ø125mm)
A spring clamps the collet onto the rod, so the Airtac BSE Clamp Standard Cylinder BSE125X80 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 BSE125X80 Technical Specifications
| Model | Airtac BSE Clamp Standard Cylinder BSE125X80 |
|---|---|
| Series | BSE ISO 15552 rod-lock cylinder |
| Bore size | Ø125 mm |
| Stroke | 80 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 BSE125X80
| B | Rod-lock cylinder prefix. |
|---|---|
| SE | ISO 15552 standard double-acting body. |
| 125 | Bore size in mm. |
| ×80 | 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 BSE125X80 Is Used
Heavy Press Tooling
Holds large press dies mid-stroke. The 8600 N collet lock prevents the 8590 N drive load from drifting down if shop air is exhausted during tool changes.
Vertical Lift Platforms
Secures vertical lifting stages on automated assembly lines. The fail-safe lock engages instantly on air loss, preventing heavy payloads from crashing down.
Machine Guard Gates
Locks heavy machine safety gates open during maintenance. The spring-applied collet keeps the gate rigidly positioned even if the E-stop bleeds the system.
Is the Airtac BSE Clamp Standard Cylinder BSE125X80 the Right Cylinder?
Verify your suspended load requires less than the 8600 N holding force. If you need less drive power, the 100 mm bore offers a 3927 N push at 0.5 MPa and a 5500 N hold. If you need more, the 125 mm is the largest standard size. Always balance piston pressures before unlocking, and allow at least 0.5 s for full release before commanding motion.
For a drop-in replacement, match the 125 mm bore, 80 mm stroke, PT1/2 cylinder port, and your specific mounting choice. SE-compatible mounting accessories fit this body, except FTC. Since the 80 mm stroke is short, side-load risks are minimal, but ensure the load is guided to prevent binding.
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 BSE125X80 FAQ
The drive force is 6136 N push and 5734 N pull at 0.5 MPa, 8590 N push at 0.7 MPa, with a max drive of 876 kgf. The separate static holding force of the rod lock is 8600 N.
The lock is spring-applied and air-released. If air is lost, a collet clamps the rod with 8600 N of bidirectional holding force. It is not a dynamic brake; engage it only after the rod stops.
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