Airtac BSE Clamp Standard Cylinder BSE50X25S
The AirTAC Airtac BSE Clamp Standard Cylinder BSE50X25S 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
- 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 BSE50X25S
The AirTAC BSE50X25S is a double-acting ISO 15552 profile cylinder with an integrated spring-applied, air-released rod lock. It provides a bidirectional static holding force of 1400 N with no live air, ensuring suspended loads stay put if air pressure drops. Operating pressure is capped at 0.7 MPa, and the cylinder port is PT1/4.
This 50 mm bore, 25 mm stroke model includes a magnet for position sensing. The lock uses a separate G1/8 release port and must engage only after the rod fully stops. Because it uses the standard SE body, SE mounting accessories fit perfectly, except for FTC.
Rod Lock — 1400 N Static Holding (Ø50mm)
A spring clamps the collet onto the rod, so the Airtac BSE Clamp Standard Cylinder BSE50X25S 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 BSE50X25S Technical Specifications
| Model | Airtac BSE Clamp Standard Cylinder BSE50X25S |
|---|---|
| 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 BSE50X25S
| 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 BSE50X25S Is Used
Vertical Pneumatic Lift
Holds a 1400 N vertical lift assembly firmly in place during an E-stop, preventing gravity drift without needing continuous live air.
Tooling Clamp
Secures a machining fixture with 982 N of drive force at 0.5 MPa, then locks the 20 mm rod instantly if the main air supply exhausts.
Pallet Stop Gate
Acts as a mid-stroke stop gate on a conveyor line; the collet lock maintains the 25 mm extended position securely even during sudden pressure loss.
Is the Airtac BSE Clamp Standard Cylinder BSE50X25S the Right Cylinder?
Verify your load requires a holding force at or below 1400 N. If you need less drive power, step down to the 40 mm bore, which offers 628 N push at 0.5 MPa and a 900 N hold. If you need more, step up to the 63 mm bore, providing 1559 N push at 0.5 MPa and a 2200 N hold. The 0.5 MPa push here is 982 N.
Engage the lock only after the rod stops, and release it only when piston pressures are balanced, allowing at least 0.5 s before moving. To replace this unit, match the 50 mm bore, 25 mm stroke, PT1/4 port, basic mounting, and -S magnet. The short 25 mm stroke minimizes side-load risks, but always ensure axial alignment.
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 BSE50X25S FAQ
It is a fail-safe, spring-applied collet that clamps the rod bidirectionally. If air is lost, it provides a 1400 N static holding force at whatever position the rod stopped. It is not a dynamic brake and must only engage after the rod stops.
The drive force is separate from the 1400 N hold. At 0.5 MPa, push is 982 N and pull is 825 N. At the 0.7 MPa ceiling, push is 1374 N, yielding a max drive of 140 kgf.
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