Airtac BSE Clamp Standard Cylinder BSE125X500S
The AirTAC Airtac BSE Clamp Standard Cylinder BSE125X500S 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, 500mm stroke, PT1/2 cylinder ports, G1/8 lock-release port.
- BoreØ125 mm
- Stroke500 mm
- Static holding force8600 N
- Lock typeSpring-lock / air-release
- Cylinder portPT1/2
- Lock-release portG1/8
About the Airtac BSE Clamp Standard Cylinder BSE125X500S
The AirTAC BSE125X500S is a double-acting ISO 15552 profile cylinder featuring an integrated spring-applied, air-released rod lock. It provides a massive 8600 N bidirectional static holding force, ensuring suspended loads remain exactly where they stopped if air is exhausted or an E-stop trips. Operating pressure is capped at 0.7 MPa, and the 500 mm stroke operates at 30-500 mm/s.
This 125 mm bore unit uses a Ø32 mm rod with an M27x2 thread and PT1/2 cylinder ports. The lock uses a separate G1/8 release port. Because the body is an extruded aluminum ISO 15552 profile, SE mounting accessories fit perfectly, except FTC. The -S magnet allows precise position tracking with CMSE reed or 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 BSE125X500S 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 BSE125X500S Technical Specifications
| Model | Airtac BSE Clamp Standard Cylinder BSE125X500S |
|---|---|
| Series | BSE ISO 15552 rod-lock cylinder |
| Bore size | Ø125 mm |
| Stroke | 500 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 BSE125X500S
| B | Rod-lock cylinder prefix. |
|---|---|
| SE | ISO 15552 standard double-acting body. |
| 125 | Bore size in mm. |
| ×500 | 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 BSE125X500S Is Used
Heavy Press Slide Suspension
Secures a multi-ton press slide mid-cycle. The 8600 N collet lock prevents sudden drops during air loss, while 8590 N drive force handles the heavy pressing motion.
Palletizer Lift Carriage
Holds a vertical lift carriage loaded with goods firmly in place at 500 mm extension. The fail-safe spring lock engages instantly if the compressor fails.
Large Injection Mold Tooling
Clamps heavy mold halves open or closed. The lock maintains 8600 N of holding force without consuming live air, ensuring the mold cannot drift during machine E-stops.
Is the Airtac BSE Clamp Standard Cylinder BSE125X500S the Right Cylinder?
Verify your load requires less than the 8600 N holding force. If you need less, the next bore down is 100 mm, offering 3927 N push at 0.5 MPa and 5500 N holding force. As the largest standard bore, there is no larger up-size; 125 mm is the maximum capacity. Always engage the lock only after the rod fully stops, and release it only when piston pressures are balanced, allowing at least 0.5 s before moving.
At 500 mm stroke, side-load risks are high; use external guide rails to prevent binding. When replacing, match the 125 mm bore, 500 mm stroke, PT1/2 ports, and -S magnet. Remember the drive force (8590 N push at 0.7 MPa) moves the load, while the 8600 N collet force holds it statically.
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 BSE125X500S FAQ
The drive force is 6136 N push and 5734 N pull at 0.5 MPa, or 8590 N push at 0.7 MPa (max 876 kgf). The separate static holding force of the spring-applied rod lock is 8600 N.
The lock is fail-safe. A spring pushes a collet to clamp the rod bidirectionally with 8600 N of force. You must supply air to the G1/8 release port to unlock it, ensuring pressures are balanced before moving.
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