Airtac BSE Clamp Standard Cylinder BSE50X25
The AirTAC Airtac BSE Clamp Standard Cylinder BSE50X25 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, 25mm stroke, PT1/4 cylinder ports, G1/8 lock-release port.
- BoreØ50 mm
- Stroke25 mm
- Static holding force1400 N
- Lock typeSpring-lock / air-release
- Cylinder portPT1/4
- Lock-release portG1/8
About the Airtac BSE Clamp Standard Cylinder BSE50X25
The AirTAC BSE50X25 is a double-acting ISO 15552 profile cylinder featuring an integrated spring-applied, air-released rod lock. A collet clamps the Ø20 mm rod to deliver a 1400 N bidirectional static holding force with zero live air, keeping suspended loads exactly where they stopped during an E-stop or pressure drop. Operating pressure is capped at 0.7 MPa.
This 50 mm bore, 25 mm stroke unit uses a PT1/4 cylinder port and a separate G1/8 release port to unlock the mechanism. The lock is a holding device, not a dynamic brake; it must engage only after the rod stops and release once piston pressures balance. This SKU lacks a magnet, so position sensing is not available.
Rod Lock — 1400 N Static Holding (Ø50mm)
A spring clamps the collet onto the rod, so the Airtac BSE Clamp Standard Cylinder BSE50X25 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 BSE50X25 Technical Specifications
| Model | Airtac BSE Clamp Standard Cylinder BSE50X25 |
|---|---|
| Series | BSE ISO 15552 rod-lock cylinder |
| Bore size | Ø50 mm |
| Stroke | 25 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 BSE50X25
| B | Rod-lock cylinder prefix. |
|---|---|
| SE | ISO 15552 standard double-acting body. |
| 50 | 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 BSE50X25 Is Used
Pallet Elevator Hold
Secures a vertical pallet lift carrying 100 kg. The 1400 N fail-safe collet locks instantly on air loss, preventing a crash while the 982 N drive handles the lift.
Pneumatic Vise Clamp
Maintains 825 N of clamping pull on a steel block. If shop air drops, the collet holds the workpiece with 1400 N, preventing the part from ejecting.
Transfer Gate Stop
Acts as a hard stop on a packaging conveyor. The 1374 N push halts cartons, and the spring-applied lock keeps the gate rigidly extended during E-stops.
Is the Airtac BSE Clamp Standard Cylinder BSE50X25 the Right Cylinder?
Verify your load requires less than the 1400 N holding force and 1374 N push at 0.7 MPa. If you need less drive, step down to the 40 mm bore (628 N push at 0.5 MPa, 900 N hold); for more power, step up to the 63 mm bore (1559 N push at 0.5 MPa, 2200 N hold). Always balance pressures before unlocking, allowing at least 0.5 s for full release. When replacing, match the 50 mm bore, 25 mm stroke, PT1/4 port, and basic mounting. SE mounting accessories fit this body except FTC.
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 BSE50X25 FAQ
The drive force is 982 N push and 825 N pull at 0.5 MPa, reaching 1374 N push at 0.7 MPa (140 kgf max). The integrated rod lock provides a separate 1400 N static holding force with no live air.
The spring-applied collet clamps the rod immediately, delivering 1400 N of bidirectional hold. To resume motion, apply air to the G1/8 release port, balance piston pressures, and wait 0.5 s before moving.
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