Airtac BSE Clamp Standard Cylinder BSE125X150S
The AirTAC Airtac BSE Clamp Standard Cylinder BSE125X150S 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, 150mm stroke, PT1/2 cylinder ports, G1/8 lock-release port.
- BoreØ125 mm
- Stroke150 mm
- Static holding force8600 N
- Lock typeSpring-lock / air-release
- Cylinder portPT1/2
- Lock-release portG1/8
About the Airtac BSE Clamp Standard Cylinder BSE125X150S
The AirTAC BSE125X150S is a double-acting ISO 15552 profile cylinder equipped with an integrated spring-applied, air-released rod lock. It provides a massive 8600 N bidirectional static holding force with zero live air required to maintain the clamp. Operating pressure is capped at 0.7 MPa, and the drive generates 8590 N of push force at that ceiling.
This fail-safe collet engages automatically if air is exhausted or an E-stop trips, holding the load exactly where it stopped. A separate G1/8 release port unlocks the mechanism when pressures are balanced. The integrated -S magnet supports CMSE reed and DMSE electronic sensors for precise position feedback.
Rod Lock — 8600 N Static Holding (Ø125mm)
A spring clamps the collet onto the rod, so the Airtac BSE Clamp Standard Cylinder BSE125X150S 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 BSE125X150S Technical Specifications
| Model | Airtac BSE Clamp Standard Cylinder BSE125X150S |
|---|---|
| Series | BSE ISO 15552 rod-lock cylinder |
| Bore size | Ø125 mm |
| Stroke | 150 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 BSE125X150S
| B | Rod-lock cylinder prefix. |
|---|---|
| SE | ISO 15552 standard double-acting body. |
| 125 | Bore size in mm. |
| ×150 | 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 BSE125X150S Is Used
Heavy Vertical Lifts
Holds elevated machine platens weighing up to 8600 N securely in place during air loss, preventing catastrophic drops on large presses.
Large Tool Clamping
Maintains unyielding clamp pressure on heavy machining fixtures, keeping the workpiece locked even if the main air supply is suddenly exhausted.
Overhead Crane Stops
Secures extended positioning arms on heavy material handling cranes, locking the 876 kgf drive load immediately when an emergency stop is triggered.
Is the Airtac BSE Clamp Standard Cylinder BSE125X150S the Right Cylinder?
Verify your suspended load stays below the 8600 N holding force. If your application requires less drive power, the 100 mm bore offers 3927 N push at 0.5 MPa and 5500 N hold. If you need more, the 125 mm is the largest available. Always engage the lock only after the rod fully stops, and allow at least 0.5 s for release before resuming motion.
This 150 mm stroke configuration uses a PT1/2 cylinder port and a G1/8 release port. SE mounting accessories fit this body perfectly except for FTC. Because the stroke is under 300 mm, side-load risks are lower, but proper guide alignment is still recommended to protect the 32 mm rod and 40 mm cushions.
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 BSE125X150S FAQ
The spring-applied collet immediately clamps the rod, delivering 8600 N of bidirectional static holding force to prevent drift. The lock is fail-safe and requires no live air to maintain the hold.
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). This is separate from the 8600 N static holding force provided by the rod lock.
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