Airtac BSE Clamp Standard Cylinder BSE125X450
The AirTAC Airtac BSE Clamp Standard Cylinder BSE125X450 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, 450mm stroke, PT1/2 cylinder ports, G1/8 lock-release port.
- BoreØ125 mm
- Stroke450 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 BSE125X450
The AirTAC BSE125X450 is a double-acting ISO 15552 profile cylinder with an integrated spring-applied, air-released rod lock. It delivers 8590 N of push force at 0.7 MPa while providing a massive 8600 N bidirectional static holding force. Because the collet clamps the rod by spring force, the load remains safely held in both directions if air pressure drops or an E-stop is hit.
This 125 mm bore unit runs at 0.15-0.7 MPa and features a separate G1/8 release port to unlock the mechanism. The lock is not a dynamic brake; it must engage only after the piston stops, and you must allow at least 0.5 s for full release before moving. This SKU ships without a magnet, so it does not support position sensing.
Rod Lock — 8600 N Static Holding (Ø125mm)
A spring clamps the collet onto the rod, so the Airtac BSE Clamp Standard Cylinder BSE125X450 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 BSE125X450 Technical Specifications
| Model | Airtac BSE Clamp Standard Cylinder BSE125X450 |
|---|---|
| Series | BSE ISO 15552 rod-lock cylinder |
| Bore size | Ø125 mm |
| Stroke | 450 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 BSE125X450
| B | Rod-lock cylinder prefix. |
|---|---|
| SE | ISO 15552 standard double-acting body. |
| 125 | Bore size in mm. |
| ×450 | 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 BSE125X450 Is Used
Heavy Press Tooling Hold
Secures 8500 N press upper tooling instantly if shop air drops, preventing die damage during an unexpected E-stop event.
Large Vertical Lift
Holds a suspended 800 kg machining fixture at 450 mm stroke mid-cycle, using the 8600 N collet grip to stop uncommanded descent.
Pallet Stop Gate
Acts as a heavy pneumatic stop gate on an assembly line, staying firmly locked in place even during a total facility air loss.
Is the Airtac BSE Clamp Standard Cylinder BSE125X450 the Right Cylinder?
Verify your suspended load stays below the 8600 N static holding limit and requires less than the 876 kgf max drive. If your load is lighter, the 100 mm bore offers 3927 N push at 0.5 MPa and a 5500 N hold. If you need more force, the 125 mm is the largest available. Always balance pressures across the piston before releasing the lock, and allow >=0.5 s before commanding motion.
For this 450 mm stroke, use a guide to prevent side-load wear on the seals and collet. When replacing a unit, match the 125 mm bore, 450 mm stroke, PT1/2 cylinder port, and mounting style. SE mounting accessories fit this body perfectly except for FTC brackets.
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 BSE125X450 FAQ
The lock is spring-applied and fail-safe. If air is lost or exhausted, the clamping collet engages the 32 mm rod instantly, providing an 8600 N bidirectional static hold. It is not a dynamic brake; the rod must be stopped before engagement.
The drive force at 0.5 MPa is 6136 N push and 5734 N pull, reaching 8590 N push at 0.7 MPa (876 kgf max drive). The separate static holding force of the rod lock is 8600 N. Always balance piston pressures and wait 0.5 s before releasing the lock.
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