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
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.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models usually ship in 3-4 days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC BSE Cylinders
Request a Quote for Airtac BSE Clamp Standard Cylinder BSE50X25S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.