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
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
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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Covers non-human-caused product damage.
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