Airtac BSE Clamp Standard Cylinder BSE125X50S
The AirTAC Airtac BSE Clamp Standard Cylinder BSE125X50S 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, 50mm stroke, PT1/2 cylinder ports, G1/8 lock-release port.
- BoreØ125 mm
- Stroke50 mm
- Static holding force8600 N
- Lock typeSpring-lock / air-release
- Cylinder portPT1/2
- Lock-release portG1/8
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac BSE Clamp Standard Cylinder BSE125X50S
The AirTAC BSE125X50S is a double-acting ISO 15552 profile cylinder with an integrated spring-applied, air-released rod lock. It provides a massive 8600 N bidirectional static holding force with zero live air, ensuring heavy suspended loads remain exactly where they stopped during an E-stop or pressure loss. Operating pressure is capped at 0.7 MPa.
Unlocking requires 0.15-0.7 MPa supplied to the separate G1/8 release port. The lock is a fail-safe collet mechanism, not a dynamic brake, so you must engage it only after the rod fully stops and release it only when piston pressures are balanced. The -S option adds a magnet for 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 BSE125X50S 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 BSE125X50S Technical Specifications
| Model | Airtac BSE Clamp Standard Cylinder BSE125X50S |
|---|---|
| Series | BSE ISO 15552 rod-lock cylinder |
| Bore size | Ø125 mm |
| Stroke | 50 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 BSE125X50S
| B | Rod-lock cylinder prefix. |
|---|---|
| SE | ISO 15552 standard double-acting body. |
| 125 | Bore size in mm. |
| ×50 | 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 BSE125X50S Is Used
Press Tooling Hold
Secures heavy press tooling in place. The 8600 N collet lock engages instantly on air loss, preventing the 8590 N push load from dropping and damaging the dies.
Pallet Stacker Safety
Holds a raised pallet mast in position during an emergency exhaust. The fail-safe lock clamps the 32 mm rod bidirectionally, stopping catastrophic fallback instantly.
Heavy Clamp Drift Control
Maintains clamping pressure on heavy fabricated parts if the air supply drops. The mechanical lock sustains the load without relying on the 40 mm air cushion.
Is the Airtac BSE Clamp Standard Cylinder BSE125X50S the Right Cylinder?
Verify your load requires less than the 8600 N holding force and 876 kgf max drive force at 0.7 MPa. If you need less holding power, the neighboring 100 mm bore offers 5500 N hold and 561 kgf drive; if you need more drive force but less hold, note this 125 mm bore is the largest standard size available. Always allow at least 0.5 s for full release before moving.
For a 50 mm stroke, side-load is minimal, but always guide the load to prevent lateral stress on the M27x2 rod. When replacing, match the 125 mm bore, 50 mm stroke, PT1/2 cylinder port, basic mounting, and -S magnet. SE mounting accessories fit this body perfectly, except for FTC.
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 BSE125X50S FAQ
On air loss, the spring-applied collet clamps the rod instantly, providing an 8600 N bidirectional static hold. The drive forces are separate: 6136 N push and 5734 N pull at 0.5 MPa, 8590 N push at 0.7 MPa, and a maximum drive force of 876 kgf.
The lock is not a dynamic brake. You must engage it only after the rod stops, and release it only when pressures on both sides of the piston are balanced. Apply 0.15-0.7 MPa to the G1/8 release port and wait at least 0.5 s before moving.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC BSE Cylinders
Request a Quote for Airtac BSE Clamp Standard Cylinder BSE125X50S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.