Airtac BSE Clamp Standard Cylinder BSE40X320S
The AirTAC Airtac BSE Clamp Standard Cylinder BSE40X320S 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, 320mm stroke, PT1/4 cylinder ports, G1/8 lock-release port.
- BoreØ40 mm
- Stroke320 mm
- Static holding force900 N
- Lock typeSpring-lock / air-release
- Cylinder portPT1/4
- Lock-release portG1/8
About the Airtac BSE Clamp Standard Cylinder BSE40X320S
The AirTAC BSE40X320S is a double-acting, single-rod ISO 15552 profile cylinder with an integrated spring-applied, air-released rod lock. It delivers a 900 N bidirectional static holding force with no live air, protecting vertical loads from drifting if pressure drops. Operating pressure is capped at 0.7 MPa.
This 40 mm bore, 320 mm stroke unit uses a Ø16 mm rod and PT1/4 cylinder ports. The lock releases via a separate G1/8 port. Because it uses the SE body, standard SE mounting accessories fit perfectly, except FTC. The -S magnet supports CMSE reed and DMSE electronic sensors.
Rod Lock — 900 N Static Holding (Ø40mm)
A spring clamps the collet onto the rod, so the Airtac BSE Clamp Standard Cylinder BSE40X320S 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 BSE40X320S Technical Specifications
| Model | Airtac BSE Clamp Standard Cylinder BSE40X320S |
|---|---|
| Series | BSE ISO 15552 rod-lock cylinder |
| Bore size | Ø40 mm |
| Stroke | 320 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 BSE40X320S
| B | Rod-lock cylinder prefix. |
|---|---|
| SE | ISO 15552 standard double-acting body. |
| 40 | Bore size in mm. |
| ×320 | 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 BSE40X320S Is Used
Vertical Pneumatic Lift
Holds a 900 N vertical lift assembly firmly in place during an E-stop, preventing sudden drops when main air pressure is lost.
Pallet Stopper Gate
Secures a 40 mm bore conveyor diverter gate in mid-stroke. The spring-applied collet keeps the 320 mm stroke locked until the G1/8 release port is pressurized.
Tool Clamp Hold
Maintains clamping force on a machining fixture. The fail-safe lock ensures the 879 N drive force application does not drift if shop air exhausts unexpectedly.
Is the Airtac BSE Clamp Standard Cylinder BSE40X320S the Right Cylinder?
Verify your suspended load stays under the 900 N holding force. If you need less drive, the 32 mm bore offers 402 N push at 0.5 MPa and 600 N hold. If you need more, the 50 mm bore gives 982 N push at 0.5 MPa and 1400 N hold. At 0.7 MPa, this 40 mm bore provides 879 N push, 528 N pull, and 90 kgf max drive.
At 320 mm stroke, use a guide to prevent side-load wear on the seals. Engage the lock only after the rod fully stops, and release it only when piston pressures are balanced, allowing at least 0.5 s before moving. Replace by matching the 40 mm bore, 320 mm stroke, PT thread, and -S magnet.
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 BSE40X320S FAQ
The spring-applied collet instantly engages, providing a 900 N bidirectional static holding force. It holds the load in place without live air. To release, apply 0.15-0.7 MPa to the G1/8 release port after balancing piston pressures.
The drive force is 628 N push and 528 N pull at 0.5 MPa, 879 N push at 0.7 MPa, and 90 kgf max drive. The separate static holding force of the lock is 900 N. Never confuse the two; the lock is not a dynamic brake.
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