Airtac BSE Clamp Standard Cylinder BSE50X350S
The AirTAC Airtac BSE Clamp Standard Cylinder BSE50X350S 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, 350mm stroke, PT1/4 cylinder ports, G1/8 lock-release port.
- BoreØ50 mm
- Stroke350 mm
- Static holding force1400 N
- Lock typeSpring-lock / air-release
- Cylinder portPT1/4
- Lock-release portG1/8
About the Airtac BSE Clamp Standard Cylinder BSE50X350S
The AirTAC BSE50X350S is a double-acting, single-rod ISO 15552 profile cylinder featuring an integrated spring-applied, air-released rod lock. It provides a 1400 N bidirectional static holding force with zero live air required, ensuring suspended loads remain exactly where they stopped during an E-stop or pressure loss. Operating pressure is capped at 0.7 MPa, and the cylinder runs at speeds of 30-800 mm/s.
This model includes a magnet for position sensing via CMSE reed or DMSE electronic sensors. The lock uses a separate G1/8 release port, entirely distinct from the PT1/4 cylinder drive ports and the adjustable air cushions. Remember that the collet lock is a holding device, not a dynamic brake; it must engage only after the rod fully stops, and you must allow at least 0.5 s for pressure to balance before releasing it.
Rod Lock — 1400 N Static Holding (Ø50mm)
A spring clamps the collet onto the rod, so the Airtac BSE Clamp Standard Cylinder BSE50X350S 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 BSE50X350S Technical Specifications
| Model | Airtac BSE Clamp Standard Cylinder BSE50X350S |
|---|---|
| Series | BSE ISO 15552 rod-lock cylinder |
| Bore size | Ø50 mm |
| Stroke | 350 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 BSE50X350S
| B | Rod-lock cylinder prefix. |
|---|---|
| SE | ISO 15552 standard double-acting body. |
| 50 | Bore size in mm. |
| ×350 | 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 BSE50X350S Is Used
Vertical Lift Gates
Holds a 1400 N vertical lift gate securely in mid-air during an E-stop, preventing uncontrolled drops when shop air is exhausted.
Overhead Tooling Clamp
Keeps an overhead machining head clamped in position with no live air, utilizing the fail-safe collet to maintain the exact stop point.
Pallet Stopper Arm
Maintains a fixed stopper arm position on a 1374 N drive force conveyor line, ensuring pallets stay blocked even if the air supply drops.
Is the Airtac BSE Clamp Standard Cylinder BSE50X350S the Right Cylinder?
Verify your suspended load does not exceed the 1400 N static holding force. If your load is lighter and you need a smaller bore, the 40 mm version offers 628 N push at 0.5 MPa and a 900 N hold. If your load exceeds 1400 N, step up to the 63 mm bore, which provides 1559 N push at 0.5 MPa and a 2200 N hold.
When replacing a unit, match the 50 mm bore, 350 mm stroke, PT1/4 port thread, and the -S magnet option. Because this stroke is 350 mm, use a guide rail to prevent side-load wear on the seals and lock collet. Always engage the lock only after the rod stops, and release it only when piston pressures are balanced. 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 BSE50X350S FAQ
The spring-applied collet instantly clamps the rod, providing a 1400 N bidirectional static hold with no live air. It is a fail-safe holding device, not a dynamic brake, so it must engage only after the rod stops.
The drive forces are 982 N push at 0.5 MPa, 825 N pull at 0.5 MPa, and 1374 N push at 0.7 MPa (max 140 kgf). The separate static holding force of the rod lock is 1400 N.
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