Airtac BSE Clamp Standard Cylinder BSE50X900
The AirTAC Airtac BSE Clamp Standard Cylinder BSE50X900 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, 900mm stroke, PT1/4 cylinder ports, G1/8 lock-release port.
- BoreØ50 mm
- Stroke900 mm
- Static holding force1400 N
- Lock typeSpring-lock / air-release
- Cylinder portPT1/4
- Lock-release portG1/8
About the Airtac BSE Clamp Standard Cylinder BSE50X900
The AirTAC BSE50X900 is a double-acting ISO 15552 profile cylinder with an integrated spring-applied, air-released rod lock. It provides a 1400 N bidirectional static holding force with no live air, ensuring suspended loads remain safely fixed if pressure drops or an E-stop trips. Operating pressure is capped at 0.7 MPa.
This 50 mm bore, 900 mm stroke unit features a Ø20 mm rod, M16x1.5 thread, and a PT1/4 cylinder port, while the lock uses a dedicated G1/8 release port. The lock is a collet mechanism, not a dynamic brake, meaning it must engage only after the rod fully stops. This SKU lacks a magnet, so position sensing is not available without modification.
Rod Lock — 1400 N Static Holding (Ø50mm)
A spring clamps the collet onto the rod, so the Airtac BSE Clamp Standard Cylinder BSE50X900 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 BSE50X900 Technical Specifications
| Model | Airtac BSE Clamp Standard Cylinder BSE50X900 |
|---|---|
| Series | BSE ISO 15552 rod-lock cylinder |
| Bore size | Ø50 mm |
| Stroke | 900 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 BSE50X900
| B | Rod-lock cylinder prefix. |
|---|---|
| SE | ISO 15552 standard double-acting body. |
| 50 | Bore size in mm. |
| ×900 | 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 BSE50X900 Is Used
Vertical Pallet Elevator
Holds a raised pallet carriage securely with 1400 N of fail-safe force, preventing a sudden drop if the main air supply is exhausted mid-cycle.
Drill Head Stopper
Locks a heavy machining head in its retracted 900 mm position via the collet, ensuring it stays clear of the workspace during emergency stops.
Pallet Diverter Gate
Maintains a diverter arm precisely in position across the 900 mm stroke, using the spring-applied lock to resist conveyor vibration and load impact.
Is the Airtac BSE Clamp Standard Cylinder BSE50X900 the Right Cylinder?
Verify your load does not exceed the 1400 N holding capacity. If your load is lighter, the 40 mm bore offers 628 N push at 0.5 MPa and 900 N hold; if heavier, step up to the 63 mm bore providing 1559 N push at 0.5 MPa and 2200 N hold. Always engage the lock only after the piston stops, and release it only when pressures are balanced, allowing at least 0.5 s before moving.
For a drop-in replacement, match the 50 mm bore, 900 mm stroke, PT port, and basic mounting. Note that SE mounting accessories fit BSE except FTC. Because the stroke is 900 mm, use a guide to prevent side-load damage to the rod and seals.
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 BSE50X900 FAQ
The spring-applied collet engages automatically upon air loss, providing a 1400 N static holding force. The drive forces are 982 N push and 825 N pull at 0.5 MPa, 1374 N push at 0.7 MPa, with a maximum drive of 140 kgf.
No, the lock is not a dynamic brake. You must engage the collet only after the rod completely stops. To release it safely, balance pressures on both sides and wait at least 0.5 seconds before initiating motion.
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