Airtac BSE Clamp Standard Cylinder BSE40X25S
The AirTAC Airtac BSE Clamp Standard Cylinder BSE40X25S 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 BSE40X25S
The AirTAC BSE40X25S is a double-acting, single-rod ISO 15552 profile cylinder with an integrated spring-applied, air-released rod lock. It supplies 628 N of push force at 0.5 MPa and features a 900 N static holding force that secures the load in both directions without live air. The operating pressure ceiling is 0.7 MPa.
This 40 mm bore, 25 mm stroke unit uses a separate G1/8 release port to unlock the internal collet. Because it uses the standard SE body, SE mounting accessories fit perfectly except for FTC. The -S magnet option allows precise position detection with CMSE reed or 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 BSE40X25S 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 BSE40X25S Technical Specifications
| Model | Airtac BSE Clamp Standard Cylinder BSE40X25S |
|---|---|
| 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 BSE40X25S
| 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 BSE40X25S Is Used
Pneumatic Vertical Lift
Secures a 40 mm bore vertical lift stage instantly on air loss, using the 900 N holding force to prevent gravity drift during E-stop.
Tooling Clamp Hold
Locks a machined part in place under a pneumatic clamp; the spring-applied collet maintains grip even if facility air drops below 0.15 MPa.
Pallet Stop Gate
Holds a conveyor pallet firmly at 25 mm stroke; the fail-safe lock resists 628 N of push force trying to bump the gate open.
Is the Airtac BSE Clamp Standard Cylinder BSE40X25S the Right Cylinder?
Verify your suspended load requires less than the 900 N static holding force. If you need less drive, the 32 mm bore offers 402 N push at 0.5 MPa and a 600 N hold; stepping up to the 50 mm bore provides 982 N push at 0.5 MPa and a 1400 N hold. Always engage the lock only after the rod fully stops, and release it only when piston pressures are balanced, allowing at least 0.5 seconds before moving. To replace, match the 40 mm bore, 25 mm stroke, PT1/4 port, and magnet option.
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 BSE40X25S 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 not a dynamic brake; engage it only after the rod stops.
At 0.5 MPa, push force is 628 N and pull is 528 N. At the 0.7 MPa ceiling, push is 879 N, yielding a max drive of 90 kgf. This drive force is separate from the 900 N static holding force.
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