Airtac BSE Clamp Standard Cylinder BSE125X800S
The AirTAC Airtac BSE Clamp Standard Cylinder BSE125X800S 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, 800mm stroke, PT1/2 cylinder ports, G1/8 lock-release port.
- BoreØ125 mm
- Stroke800 mm
- Static holding force8600 N
- Lock typeSpring-lock / air-release
- Cylinder portPT1/2
- Lock-release portG1/8
About the Airtac BSE Clamp Standard Cylinder BSE125X800S
The AirTAC BSE125X800S is a double-acting ISO 15552 profile cylinder with an integrated spring-applied, air-released rod lock. It delivers a massive 8590 N drive force at 0.7 MPa, while the fail-safe collet lock provides 8600 N of bidirectional static holding force with zero live air required to maintain the clamp.
Operating pressure is capped at 0.7 MPa, and the lock unlocks via a separate G1/8 port. Because the stroke is 800 mm, you must use external guide rails to prevent side loads from damaging the rod and collet mechanism. The -S magnet supports CMSE reed and DMSE electronic sensors.
Rod Lock — 8600 N Static Holding (Ø125mm)
A spring clamps the collet onto the rod, so the Airtac BSE Clamp Standard Cylinder BSE125X800S 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 BSE125X800S Technical Specifications
| Model | Airtac BSE Clamp Standard Cylinder BSE125X800S |
|---|---|
| Series | BSE ISO 15552 rod-lock cylinder |
| Bore size | Ø125 mm |
| Stroke | 800 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 BSE125X800S
| B | Rod-lock cylinder prefix. |
|---|---|
| SE | ISO 15552 standard double-acting body. |
| 125 | Bore size in mm. |
| ×800 | 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 BSE125X800S Is Used
Heavy Vertical Lift
Holds an 8590 N vertical press arm safely mid-stroke, using the 8600 N fail-safe collet to prevent a catastrophic drop if shop air exhausts.
Injection Mold Tooling
Clamps a heavy mold halve in place during an E-stop, relying on the 8600 N static hold rather than live air pressure to keep the tool secure.
Pallet Stacker Gate
Locks an 800 mm stroke diverter gate in the up position, using the spring-applied collet to ensure the lane stays blocked during power loss.
Is the Airtac BSE Clamp Standard Cylinder BSE125X800S the Right Cylinder?
Verify your suspended load requires 8600 N or less of holding force. If you need less drive, step down to the 100 mm bore (3927 N push @0.5 MPa, 5500 N hold); if you need more, the 125 mm is the largest available. Engage the lock only after the rod fully stops, and release it only when piston pressures are balanced, allowing at least 0.5 s before moving. For an 800 mm stroke, external guide rails are mandatory to manage side loads. To match this replacement exactly, confirm the 125 mm bore, 800 mm stroke, PT1/2 port, basic mounting, and -S magnet.
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 BSE125X800S FAQ
The drive force is 6136 N push and 5734 N pull at 0.5 MPa, reaching 8590 N push at 0.7 MPa (max 876 kgf drive). The separate static holding force of the spring-applied rod lock is 8600 N.
The lock is spring-applied and fail-safe, meaning it clamps the rod instantly if air is lost or exhausted, providing 8600 N of bidirectional hold. It is not a dynamic brake, so engage it only after the rod stops.
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