Airtac BSE Clamp Standard Cylinder BSE125X225
The AirTAC Airtac BSE Clamp Standard Cylinder BSE125X225 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, 225mm stroke, PT1/2 cylinder ports, G1/8 lock-release port.
- BoreØ125 mm
- Stroke225 mm
- Static holding force8600 N
- Lock typeSpring-lock / air-release
- Cylinder portPT1/2
- Lock-release portG1/8
About the Airtac BSE Clamp Standard Cylinder BSE125X225
The AirTAC BSE125X225 is a double-acting, single-rod ISO 15552 profile cylinder featuring an integrated spring-applied, air-released rod lock. A collet clamps the Ø32 mm rod automatically, delivering an 8600 N bidirectional static holding force with zero live air. Operating pressure is capped at 0.15-0.7 MPa, and the lock unlocks via a separate G1/8 port.
This fail-safe mechanism ensures the rod stays exactly where it stopped if air is exhausted or an E-stop trips. The lock is a holding device, not a dynamic brake: engage it only after the rod fully stops, balance pressures on both piston sides, and allow at least 0.5 s for full release before moving. This SKU has no -S magnet, so it does not support CMSE or DMSE position sensors.
Rod Lock — 8600 N Static Holding (Ø125mm)
A spring clamps the collet onto the rod, so the Airtac BSE Clamp Standard Cylinder BSE125X225 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 BSE125X225 Technical Specifications
| Model | Airtac BSE Clamp Standard Cylinder BSE125X225 |
|---|---|
| Series | BSE ISO 15552 rod-lock cylinder |
| Bore size | Ø125 mm |
| Stroke | 225 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 BSE125X225
| B | Rod-lock cylinder prefix. |
|---|---|
| SE | ISO 15552 standard double-acting body. |
| 125 | Bore size in mm. |
| ×225 | 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 BSE125X225 Is Used
Heavy Vertical Lift Holding
Secures 8600 N vertical press or elevator loads instantly on air loss, preventing catastrophic drops during E-stop events.
Machine Tool Clamping
Locks heavy machining fixtures or large stamping dies in place with no live air, ensuring workpieces stay clamped if supply pressure drops.
Pallet Line Stop Gate
Holds a heavy pallet accumulator gate firmly closed during maintenance or cycle pauses, relying on the spring collet rather than continuous air.
Is the Airtac BSE Clamp Standard Cylinder BSE125X225 the Right Cylinder?
Verify your suspended load stays below the 8600 N holding force. If you need less holding capacity, step down to the 100 mm bore, which provides a 3927 N push at 0.5 MPa and a 5500 N hold. If you require more force, the 125 mm is the largest available BSE size. The 125 mm bore yields 6136 N push and 5734 N pull at 0.5 MPa, reaching a maximum drive of 876 kgf at 0.7 MPa.
When ordering a replacement, match the 125 mm bore, 225 mm stroke, PT1/2 cylinder port, and your specific mounting code. SE mounting accessories fit this ISO 15552 body perfectly, except for the FTC variant. Because the 225 mm stroke is under 300 mm, side-load risks are lower, but you should still guide heavy loads to prevent side forces on the collet lock.
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 BSE125X225 FAQ
The spring-applied collet clamps the rod instantly, delivering an 8600 N bidirectional static hold with no live air. It is a fail-safe holding device, not a dynamic brake; the rod must be stopped before engagement.
Drive force at 0.5 MPa is 6136 N push and 5734 N pull. At 0.7 MPa, push is 8590 N, yielding a max drive of 876 kgf. The separate static holding force of the lock is 8600 N.
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