Airtac BSE Clamp Standard Cylinder BSE50X400
The AirTAC Airtac BSE Clamp Standard Cylinder BSE50X400 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 BSE50X400
The AirTAC BSE50X400 is a double-acting ISO 15552 profile cylinder featuring an integrated spring-applied, air-released rod lock. A collet clamps the Ø20 mm piston rod automatically, providing a bidirectional static holding force of 1400 N. If air pressure drops or an E-stop trips, the lock engages to prevent drift. Operating pressure is capped at 0.7 MPa.
This 50 mm bore, 400 mm stroke unit uses a separate G1/8 release port to unlock the collet. The lock is a holding device, not a dynamic brake; it must engage only after the rod stops. Because it uses the standard SE body, SE mounting accessories fit perfectly, except for the FTC model.
Rod Lock — 1400 N Static Holding (Ø50mm)
A spring clamps the collet onto the rod, so the Airtac BSE Clamp Standard Cylinder BSE50X400 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 BSE50X400 Technical Specifications
| Model | Airtac BSE Clamp Standard Cylinder BSE50X400 |
|---|---|
| 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 BSE50X400
| 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 BSE50X400 Is Used
Vertical Pallet Lifts
Holds a 1400 N vertical load in place if air is lost, preventing a raised pallet from crashing down during an E-stop event.
Machining Spindle Stops
Clamps the rod securely to lock a tooling head in position, maintaining exact alignment without relying on live air pressure.
Pallet Accumulation Gates
Acts as a hard stop that stays firmly put under impact, halting pallet flow securely when the line halts and air exhausts.
Is the Airtac BSE Clamp Standard Cylinder BSE50X400 the Right Cylinder?
Verify your load requires a holding force of 1400 N or less. If you need less drive power, step down to the 40 mm bore (push 628 N at 0.5 MPa, hold 900 N). If your load exceeds 1400 N, step up to the 63 mm bore (push 1559 N at 0.5 MPa, hold 2200 N). Always balance pressures on both sides of the piston before releasing the lock, and allow at least 0.5 s for full release before initiating motion.
For replacement, match the 50 mm bore, 400 mm stroke, PT1/4 cylinder port, and your specific mounting code. This SKU has no -S magnet, so position sensing is not available. At 400 mm stroke, use guide rails to prevent side loads and extend bearing life.
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 BSE50X400 FAQ
The spring-applied collet clamp engages instantly, providing a 1400 N bidirectional static hold. The rod stays locked at its stopped position until balanced air is reapplied to the G1/8 release port.
The drive forces are 982 N push and 825 N pull at 0.5 MPa, with a maximum push of 1374 N (140 kgf) at 0.7 MPa. The separate static holding force of the rod lock is 1400 N.
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