Airtac BSE Clamp Standard Cylinder BSE50X125
The AirTAC Airtac BSE Clamp Standard Cylinder BSE50X125 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 Ø20mm rod and holds up to 1400 N in either direction — no drift. Ø50mm bore, 125mm stroke, PT1/4 cylinder ports, G1/8 lock-release port.
- BoreØ50 mm
- Stroke125 mm
- Static holding force1400 N
- Lock typeSpring-lock / air-release
- Cylinder portPT1/4
- 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 BSE50X125
The AirTAC BSE50X125 is a double-acting single-rod ISO 15552 profile cylinder featuring an integrated spring-applied, air-released rod lock. A separate G1/8 release port supplies air to unlock the clamping collet. If air pressure drops, exhausts, or an E-stop trips, the lock engages instantly to hold the rod in both directions.
This fail-safe mechanism provides a 1400 N static holding force without requiring live air. Operating pressure is capped at 0.7 MPa, and the cylinder port is PT1/4. This specific SKU lacks a magnet, meaning CMSE or DMSE position sensors cannot be used. The lock is a holding device, not a dynamic brake, and must only engage after the piston rod has fully stopped.
Rod Lock — 1400 N Static Holding (Ø50mm)
A spring clamps the collet onto the rod, so the Airtac BSE Clamp Standard Cylinder BSE50X125 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 BSE50X125 Technical Specifications
| Model | Airtac BSE Clamp Standard Cylinder BSE50X125 |
|---|---|
| Series | BSE ISO 15552 rod-lock cylinder |
| Bore size | Ø50 mm |
| Stroke | 125 mm |
| Static holding force | 1400 N |
| Cylinder port | PT1/4 |
| Lock-release port | G1/8 |
| Rod thread | M16×1.5 |
|---|---|
| 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 – 800 mm/s |
| Cushion | Adjustable, 30 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 (Ø50mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 982 N | 825 N |
| 0.7 MPa (max) | 1374 N | — |
| Max drive (@0.7 MPa) | 140 kgf | |
Drive force is separate from the 1400 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 BSE50X125
| B | Rod-lock cylinder prefix. |
|---|---|
| SE | ISO 15552 standard double-acting body. |
| 50 | Bore size in mm. |
| ×125 | 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 BSE50X125 Is Used
Vertical Pneumatic Lifts
Secures elevated platens carrying 1400 N loads, preventing sudden drops if the main air supply is interrupted during an E-stop event.
Machine Tool Clamping
Holds workpiece actuators firmly in position during machining cycles, ensuring the clamp does not drift or release upon air exhaustion.
Pallet Stop Gates
Maintains a rigid stop position for pallets on an assembly line conveyor, locking the rod instantly when the system halts.
Is the Airtac BSE Clamp Standard Cylinder BSE50X125 the Right Cylinder?
Verify your suspended load stays below the 1400 N holding capacity. If your load is lighter, the 40 mm bore offers a 628 N push at 0.5 MPa and a 900 N hold. If you need more force, stepping up to the 63 mm bore yields a 1559 N push at 0.5 MPa and a 2200 N hold.
Always engage the lock only after the rod stops moving. To release safely, balance pressures on both sides of the piston and allow at least 0.5 seconds before commanding motion. For replacements, match the 50 mm bore, 125 mm stroke, PT1/4 port, and your specific mounting code. SE mounting accessories fit this body, except FTC brackets.
Quick checklist
- ✓ Load to hold ≤ 1400 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 BSE50X125 FAQ
The rod lock is spring-applied and air-released, meaning a loss of air pressure causes the internal collet to clamp the rod immediately. It provides a bidirectional static holding force of 1400 N to keep the load exactly where it stopped.
The drive force is separate from the holding force. At 0.5 MPa, the push force is 982 N and the pull force is 825 N. At the 0.7 MPa maximum operating pressure, the push force is 1374 N, yielding a maximum drive of 140 kgf. The static holding force remains 1400 N.
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Standard models are processed and dispatched in 3-5 business days.
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