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
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.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC BSE Cylinders
Request a Quote for Airtac BSE Clamp Standard Cylinder BSE125X450
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.