Airtac BSE Clamp Standard Cylinder BSE50X125S
The AirTAC Airtac BSE Clamp Standard Cylinder BSE50X125S 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
About the Airtac BSE Clamp Standard Cylinder BSE50X125S
The AirTAC BSE50X125S is a double-acting single-rod 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 fail-safe hold with zero live air required. Operating pressure is capped at 0.7 MPa, and the lock unlocks via a dedicated G1/8 port.
This 50 mm bore unit generates 982 N push at 0.5 MPa and 1374 N at 0.7 MPa. The -S magnet option supports CMSE reed and DMSE electronic sensors. SE mounting accessories fit this body, though FTC is not supported, and the lock must only engage after the rod fully stops.
Rod Lock — 1400 N Static Holding (Ø50mm)
A spring clamps the collet onto the rod, so the Airtac BSE Clamp Standard Cylinder BSE50X125S 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 BSE50X125S Technical Specifications
| Model | Airtac BSE Clamp Standard Cylinder BSE50X125S |
|---|---|
| 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 BSE50X125S
| 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 BSE50X125S Is Used
Vertical Pneumatic Lift
Secures a 1400 N vertical elevator platform in place instantly if air pressure drops, preventing uncontrolled descent during E-stop events.
Machine Tool Clamp
Holds a machining fixture with 1374 N drive force, maintaining a rigid 1400 N collet grip on the rod so the clamp stays locked even if air exhausts.
Pallet Stopper Gate
Acts as a hard stop on a packaging line, using the fail-safe spring collet to hold the load securely in both directions during maintenance lockout.
Is the Airtac BSE Clamp Standard Cylinder BSE50X125S the Right Cylinder?
Verify your suspended load stays under the 1400 N static holding limit. If you need less force, the 40 mm bore provides 628 N push at 0.5 MPa and 900 N hold; if scaling up, the 63 mm bore offers 1559 N push at 0.5 MPa and 2200 N hold. Always balance pressures across the piston before releasing the lock, allowing at least 0.5 s for full release before motion. Match replacement specs by confirming 125 mm stroke, PT1/4 port, M16x1.5 rod thread, and your specific mounting code. For this 125 mm stroke, ensure external guides support side loads to prevent binding.
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 BSE50X125S FAQ
The spring-applied collet clamps the rod immediately, providing a 1400 N bidirectional static hold with no live air. It is a fail-safe holding lock, not a dynamic brake, so it must only engage after the rod has completely stopped.
Drive force is separate from the hold: push is 982 N and pull is 825 N at 0.5 MPa, push is 1374 N at 0.7 MPa, max drive is 140 kgf, and the static holding force is 1400 N.
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 BSE50X125S
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.