Airtac BSE Clamp Standard Cylinder BSE125X700
The AirTAC Airtac BSE Clamp Standard Cylinder BSE125X700 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, 700mm stroke, PT1/2 cylinder ports, G1/8 lock-release port.
- BoreØ125 mm
- Stroke700 mm
- Static holding force8600 N
- Lock typeSpring-lock / air-release
- Cylinder portPT1/2
- Lock-release portG1/8
About the Airtac BSE Clamp Standard Cylinder BSE125X700
The AirTAC BSE125X700 is a double-acting ISO 15552 profile cylinder with an integrated spring-applied, air-released rod lock. It delivers a massive 8600 N bidirectional static holding force with zero live air required, ensuring suspended loads remain safely frozen upon pressure loss or E-stop activation. Operating pressure is capped at 0.7 MPa, and the lock mechanism utilizes a dedicated G1/8 release port rather than relying on the adjustable air cushions.
This 125 mm bore unit drives 8590 N of push force at 0.7 MPa while traversing its 700 mm stroke at 30-500 mm/s. Because the lock is a collet device and not a dynamic brake, it must only engage after the rod fully stops, requiring at least 0.5 s for safe release once piston pressures balance. It uses standard SE mounting accessories except FTC, and this specific SKU lacks a magnet for position sensing.
Rod Lock — 8600 N Static Holding (Ø125mm)
A spring clamps the collet onto the rod, so the Airtac BSE Clamp Standard Cylinder BSE125X700 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 BSE125X700 Technical Specifications
| Model | Airtac BSE Clamp Standard Cylinder BSE125X700 |
|---|---|
| Series | BSE ISO 15552 rod-lock cylinder |
| Bore size | Ø125 mm |
| Stroke | 700 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 BSE125X700
| B | Rod-lock cylinder prefix. |
|---|---|
| SE | ISO 15552 standard double-acting body. |
| 125 | Bore size in mm. |
| ×700 | 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 BSE125X700 Is Used
Heavy Press Ram Arrest
Secures a 6000 N press ram mid-stroke during die changes. The 8600 N fail-safe collet lock holds the mass instantly if plant air drops, preventing catastrophic die crashes.
Large Vertical Lift Hold
Suspends heavy industrial lifting platforms. The spring-applied lock provides 8600 N of bidirectional holding force without live air, stopping the 700 mm stroke from creeping downward.
Palletizer Safety Gate
Holds a massive automated palletizer safety gate open during robotic loading. The rod lock engages only after the gate stops, ensuring it stays put during an E-stop event.
Is the Airtac BSE Clamp Standard Cylinder BSE125X700 the Right Cylinder?
Verify your suspended load stays strictly under the 8600 N static holding limit. If your load is lighter, stepping down to the 100 mm bore offers 5497 N push at 0.7 MPa and 5500 N holding force, saving space. If you need even more brute drive force, note that 125 mm is the largest standard BSE bore available. For any replacement, match the 700 mm stroke, PT1/2 cylinder port, and desired mounting. Because this stroke is 700 mm, always use external guide rails to prevent side-load damage to the extruded aluminum barrel and rod seal.
Adhere strictly to the safety operating rule: the collet lock must only engage after the piston stops moving, and you must balance pressures on both sides before releasing it. Allowing at least 0.5 s for full release before commanding motion prevents internal collet and rod damage.
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 BSE125X700 FAQ
On air loss, the spring-applied collet instantly clamps the rod, providing a fail-safe 8600 N bidirectional static hold. The drive figures are separate: [email protected] MPa is 6136 N, [email protected] MPa is 5734 N, [email protected] MPa is 8590 N, max drive is 876 kgf at 0.7 MPa.
You must balance the air pressures on both sides of the piston first. Then supply 0.15-0.7 MPa to the dedicated G1/8 release port to free the collet, and wait at least 0.5 s before commanding cylinder motion to prevent dynamic braking damage.
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