Airtac BSE Clamp Standard Cylinder BSE50X400S
The AirTAC Airtac BSE Clamp Standard Cylinder BSE50X400S 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, 400mm stroke, PT1/4 cylinder ports, G1/8 lock-release port.
- BoreØ50 mm
- Stroke400 mm
- Static holding force1400 N
- Lock typeSpring-lock / air-release
- Cylinder portPT1/4
- Lock-release portG1/8
About the Airtac BSE Clamp Standard Cylinder BSE50X400S
The AirTAC BSE50X400S is a double-acting ISO 15552 profile cylinder with an integrated spring-applied, air-released rod lock. A collet clamps the Ø20 mm piston rod to deliver a 1400 N bidirectional static holding force with zero live air. Operating pressure is capped at 0.7 MPa, and the lock uses a dedicated G1/8 release port entirely separate from the PT1/4 cylinder drive ports.
Because the lock is fail-safe, a loss of air or an E-stop trip instantly secures the load at whatever position the rod stopped. The lock is a holding device, not a dynamic brake; you must engage it only after the rod stops and release it only when piston pressures are balanced, allowing at least 0.5 s before moving. This 400 mm stroke unit includes a -S magnet for CMSE reed and DMSE electronic sensors.
Rod Lock — 1400 N Static Holding (Ø50mm)
A spring clamps the collet onto the rod, so the Airtac BSE Clamp Standard Cylinder BSE50X400S 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 BSE50X400S Technical Specifications
| Model | Airtac BSE Clamp Standard Cylinder BSE50X400S |
|---|---|
| Series | BSE ISO 15552 rod-lock cylinder |
| Bore size | Ø50 mm |
| Stroke | 400 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 BSE50X400S
| B | Rod-lock cylinder prefix. |
|---|---|
| SE | ISO 15552 standard double-acting body. |
| 50 | Bore size in mm. |
| ×400 | 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 BSE50X400S Is Used
Vertical Pneumatic Lift
Secures a 1400 N vertical load instantly on air loss, preventing a raised materials platform from crashing down during an E-stop event.
Machine Tool Clamping
Holds a workpiece fixture with 1374 N drive force at 0.7 MPa, then locks the 400 mm stroke position so the clamp stays put if shop air drops.
Pallet Gate Stop
Acts as a fail-safe stop on a conveyor transfer line; the spring-applied collet keeps the gate extended even when the system is exhausted.
Is the Airtac BSE Clamp Standard Cylinder BSE50X400S the Right Cylinder?
Verify your suspended load stays under the 1400 N holding force limit. If you need less drive, the 40 mm bore offers 628 N push at 0.5 MPa and 900 N hold; if you need more, step up to the 63 mm bore for 1559 N push at 0.5 MPa and 2200 N hold. Always engage the lock only after the rod fully stops, and release it only when both sides are pressure-balanced, allowing at least 0.5 s before moving.
For a 400 mm stroke, use a non-rotational guide to prevent side loads from damaging the seals and the rod-lock collet. When replacing a unit, match the 50 mm bore, 400 mm stroke, PT port thread, basic mounting, and the -S magnet option. SE mounting accessories fit this body perfectly, except the FTC trunnion is not available for BSE models.
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 BSE50X400S FAQ
The drive force at 0.5 MPa is 982 N push and 825 N pull; at 0.7 MPa it is 1374 N push, yielding a maximum drive of 140 kgf. The integrated rod lock provides a separate 1400 N static holding force with no live air.
The lock is spring-applied, so losing air instantly forces the collet to clamp the rod bidirectionally at its stopped position. To release it safely, balance pressures on both sides of the piston and supply 0.15-0.7 MPa to the G1/8 release port, waiting at least 0.5 s before moving.
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