Airtac BSE Clamp Standard Cylinder BSE40X400
The AirTAC Airtac BSE Clamp Standard Cylinder BSE40X400 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 Ø16mm rod and holds up to 900 N in either direction — no drift. Ø40mm bore, 400mm stroke, PT1/4 cylinder ports, G1/8 lock-release port.
- BoreØ40 mm
- Stroke400 mm
- Static holding force900 N
- Lock typeSpring-lock / air-release
- Cylinder portPT1/4
- Lock-release portG1/8
About the Airtac BSE Clamp Standard Cylinder BSE40X400
The AirTAC BSE40X400 is a double-acting ISO 15552 profile cylinder with an integrated spring-applied, air-released rod lock. A collet clamps the 16mm rod to deliver a 900N bidirectional fail-safe hold. If air is exhausted or an E-stop trips, the load stays exactly where it stopped. Operating pressure is capped at 0.7 MPa.
The lock engages only after the rod stops, and requires a separate G1/8 release port to unlock. You must balance pressures across the piston and allow at least 0.5 seconds before moving. This 400mm stroke unit lacks a magnet, so no CMSE or DMSE position sensors can be fitted. SE-compatible mounting accessories fit this body, except for FTC.
Rod Lock — 900 N Static Holding (Ø40mm)
A spring clamps the collet onto the rod, so the Airtac BSE Clamp Standard Cylinder BSE40X400 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 BSE40X400 Technical Specifications
| Model | Airtac BSE Clamp Standard Cylinder BSE40X400 |
|---|---|
| Series | BSE ISO 15552 rod-lock cylinder |
| Bore size | Ø40 mm |
| Stroke | 400 mm |
| Static holding force | 900 N |
| Cylinder port | PT1/4 |
| Lock-release port | G1/8 |
| Rod thread | M12×1.25 |
|---|---|
| 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 800 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 (Ø40mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 628 N | 528 N |
| 0.7 MPa (max) | 880 N | — |
| Max drive (@0.7 MPa) | 90 kgf | |
Drive force is separate from the 900 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 BSE40X400
| B | Rod-lock cylinder prefix. |
|---|---|
| SE | ISO 15552 standard double-acting body. |
| 40 | 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 BSE40X400 Is Used
Vertical Pneumatic Lifts
Holds a 900N vertical load mid-stroke if air drops, preventing a 40mm bore lift stage from drifting downward during an E-stop.
Multi-Station Machining
Clamps an aluminum fixture safely; the 900N collet lock prevents the 400mm stroke from retracting if the 0.7 MPa supply is cut.
Pallet Sorting Gates
Stops 90 kgf of drive force instantly; the lock holds the gate rigid against box impacts without needing continuous live air.
Is the Airtac BSE Clamp Standard Cylinder BSE40X400 the Right Cylinder?
Verify your suspended load requires less than the 900N static holding force. If you need less drive force, step down to the 32mm bore (402N push at 0.5 MPa, 600N hold). If you need more, step up to the 50mm bore (982N push at 0.5 MPa, 1400N hold). At 0.7 MPa, this 40mm bore generates 879N push and 90 kgf max drive force.
For a 400mm stroke, add an external guide rail to prevent side-load wear on the seals. To replace this unit exactly, match the 40mm bore, 400mm stroke, PT1/4 cylinder port, and your specific mounting option. Always engage the lock only after the rod is fully stopped.
Quick checklist
- ✓ Load to hold ≤ 900 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 BSE40X400 FAQ
The spring-applied collet clamps the rod for a 900N bidirectional hold with no live air. Drive forces are 628N push and 528N pull at 0.5 MPa, 879N push at 0.7 MPa, and 90 kgf max drive.
Apply 0.15-0.7 MPa to the G1/8 release port only after balancing pressures on both sides of the piston. Wait at least 0.5 seconds for full release before moving.
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