Airtac BSE Clamp Standard Cylinder BSE125X25
The AirTAC Airtac BSE Clamp Standard Cylinder BSE125X25 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, 25mm stroke, PT1/2 cylinder ports, G1/8 lock-release port.
- BoreØ125 mm
- Stroke25 mm
- Static holding force8600 N
- Lock typeSpring-lock / air-release
- Cylinder portPT1/2
- Lock-release portG1/8
About the Airtac BSE Clamp Standard Cylinder BSE125X25
The AirTAC BSE125X25 is a double-acting ISO 15552 profile cylinder with an integrated spring-applied, air-released rod lock. A collet clamps the 32 mm piston rod, delivering a bidirectional static holding force of 8600 N. If air pressure drops or an E-stop trips, the lock engages automatically to hold the load safely in place.
Operating pressure is capped at 0.15-0.7 MPa, and the lock is released via a separate G1/8 port. The lock is a holding device, not a dynamic brake; it must engage only after the rod fully stops. Release requires balanced piston pressures, allowing at least 0.5 s before motion. This unit has no magnet (-S) 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 BSE125X25 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 BSE125X25 Technical Specifications
| Model | Airtac BSE Clamp Standard Cylinder BSE125X25 |
|---|---|
| Series | BSE ISO 15552 rod-lock cylinder |
| Bore size | Ø125 mm |
| Stroke | 25 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 BSE125X25
| B | Rod-lock cylinder prefix. |
|---|---|
| SE | ISO 15552 standard double-acting body. |
| 125 | Bore size in mm. |
| ×25 | 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 BSE125X25 Is Used
Heavy Vertical Lift Hold
Secures 850 kg vertical press plungers and heavy elevator platforms instantly on air loss, using the 8600 N collet grip to prevent catastrophic drops.
Overhead Tool Clamp
Maintains heavy machining heads and large robotic grippers in position during E-stops, ensuring suspended tooling does not drift or fall when shop air exhausts.
Large Pneumatic Press
Locks the mid-stroke position of a 125 mm bore press platen safely during maintenance or emergency stops, holding the mass without relying on live air pressure.
Is the Airtac BSE Clamp Standard Cylinder BSE125X25 the Right Cylinder?
Verify your load does not exceed the 8600 N holding force. If your load is lighter, the BSE100 bore offers 3927 N push at 0.5 MPa and 5500 N holding force. If you need more drive, there is no larger BSE bore; this 125 mm bore provides 6136 N push at 0.5 MPa, 8590 N push at 0.7 MPa, and a maximum drive of 876 kgf. When replacing, match the 25 mm stroke, PT1/2 cylinder port, and mounting code. SE mounting accessories fit this body except FTC. Because the stroke is 25 mm, side-load risks are minimal, but ensure axial alignment to prevent guide wear.
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 BSE125X25 FAQ
The spring-applied collet instantly clamps the 32 mm rod, providing a bidirectional static holding force of 8600 N without any live air. It is a fail-safe hold, not a dynamic brake, so it must engage only after the rod has stopped.
At 0.5 MPa, the push force is 6136 N and pull is 5734 N. At the 0.7 MPa ceiling, push is 8590 N, yielding a max drive of 876 kgf. This drive force is separate from the 8600 N static holding force of the rod 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 BSE125X25
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.