Airtac BSE Clamp Standard Cylinder BSE40X25
The AirTAC Airtac BSE Clamp Standard Cylinder BSE40X25 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, 25mm stroke, PT1/4 cylinder ports, G1/8 lock-release port.
- BoreØ40 mm
- Stroke25 mm
- Static holding force900 N
- Lock typeSpring-lock / air-release
- Cylinder portPT1/4
- Lock-release portG1/8
About the Airtac BSE Clamp Standard Cylinder BSE40X25
The AirTAC BSE40X25 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, ensuring suspended loads stay put if pressure drops. Drive pressure is capped at 0.7 MPa, and the lock operates via a separate G1/8 release port.
Unlike a plain SE cylinder, the BSE collet locks the rod in both directions. The lock engages only after the rod stops, requiring >=0.5 s for full release. This 40 mm bore unit runs at 30-800 mm/s, features a 30 mm adjustable air cushion on both ends, and uses a PT1/4 cylinder port. This SKU has no magnet, so position sensors are not supported.
Rod Lock — 900 N Static Holding (Ø40mm)
A spring clamps the collet onto the rod, so the Airtac BSE Clamp Standard Cylinder BSE40X25 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 BSE40X25 Technical Specifications
| Model | Airtac BSE Clamp Standard Cylinder BSE40X25 |
|---|---|
| Series | BSE ISO 15552 rod-lock cylinder |
| Bore size | Ø40 mm |
| Stroke | 25 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 BSE40X25
| B | Rod-lock cylinder prefix. |
|---|---|
| SE | ISO 15552 standard double-acting body. |
| 40 | Bore size in mm. |
| ×25 | 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 BSE40X25 Is Used
Pneumatic Lift Hold
Secures a 60 kg vertical lift arm against gravity during air loss. The 900 N collet lock engages instantly, preventing a sudden drop while the 879 N drive force handles the lift cycle.
Tool Clamp Station
Maintains clamping force on a machined part if shop air is exhausted. The fail-safe lock holds the 16 mm rod securely, ensuring the tool does not spring open during an E-stop.
Diverter Gate Stop
Locks a conveyor diverter gate in a fixed position during product routing. The spring-applied collet holds the mechanism rigid, absorbing impact without drifting from its set 25 mm stroke.
Is the Airtac BSE Clamp Standard Cylinder BSE40X25 the Right Cylinder?
Verify your 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 a 600 N hold. If you need more, the 50 mm bore gives 982 N push at 0.5 MPa and a 1400 N hold. Always engage the lock only after the rod stops, and release it only when piston pressures are balanced.
This 25 mm stroke matches the BSE40X25 directly by bore, stroke, PT1/4 thread, and no-magnet configuration. Because the stroke is under 300 mm, side-load stress is minimal, but ensure the front rod-lock unit remains free from lateral binding. Remember that SE mounting accessories fit this cylinder except for FTC.
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 BSE40X25 FAQ
The lock is spring-applied and air-released. If air is lost or exhausted, a collet clamps the 16 mm rod, providing a 900 N bidirectional static hold. It is a fail-safe holding device, not a dynamic brake.
Drive forces are 628 N push and 528 N pull at 0.5 MPa, and 879 N push at 0.7 MPa (max 90 kgf). The static holding force is 900 N. Unlock via the G1/8 port at 0.15-0.7 MPa, allowing >=0.5 s for release before moving.
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