Airtac BSE Clamp Standard Cylinder BSE40X50S
The AirTAC Airtac BSE Clamp Standard Cylinder BSE40X50S 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, 50mm stroke, PT1/4 cylinder ports, G1/8 lock-release port.
- BoreØ40 mm
- Stroke50 mm
- Static holding force900 N
- Lock typeSpring-lock / air-release
- Cylinder portPT1/4
- Lock-release portG1/8
About the Airtac BSE Clamp Standard Cylinder BSE40X50S
The AirTAC BSE40X50S is a double-acting, single-rod ISO 15552 profile cylinder with an integrated spring-applied, air-released rod lock. It supplies a 900 N bidirectional static holding force with zero live air, preventing drift if pressure drops or an E-stop trips. Operating pressure is capped at 0.7 MPa, and the rod lock uses a dedicated G1/8 release port.
This 40 mm bore, 50 mm stroke unit features a Ø16 mm rod, M12x1.25 rod thread, and 30 mm adjustable air cushions at both ends. Equipped with a magnet (-S), it supports CMSE reed and DMSE electronic sensors. The lock is a static holding device, not a dynamic brake, meaning it must engage only after the piston stops.
Rod Lock — 900 N Static Holding (Ø40mm)
A spring clamps the collet onto the rod, so the Airtac BSE Clamp Standard Cylinder BSE40X50S 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 BSE40X50S Technical Specifications
| Model | Airtac BSE Clamp Standard Cylinder BSE40X50S |
|---|---|
| Series | BSE ISO 15552 rod-lock cylinder |
| Bore size | Ø40 mm |
| Stroke | 50 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 BSE40X50S
| B | Rod-lock cylinder prefix. |
|---|---|
| SE | ISO 15552 standard double-acting body. |
| 40 | Bore size in mm. |
| ×50 | 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 BSE40X50S Is Used
Vertical Pneumatic Lift
Holds a 50 kg vertical lift gate steady mid-stroke. The 900 N fail-safe collet clamps instantly if air pressure drops, preventing the gate from crashing down.
Tooling Clamp
Secures a light machining fixture during an emergency stop. The spring-applied lock maintains the 628 N push force position without requiring continuous live air.
Pallet Stopper
Acts as a static stop for 40 kg workpiece pallets on an assembly line. The lock keeps the stopper rod firmly extended during power exhaustion.
Is the Airtac BSE Clamp Standard Cylinder BSE40X50S the Right Cylinder?
Verify your suspended load requires 900 N or less of holding force. If you need less drive power, the 32 mm bore offers 402 N push at 0.5 MPa and a 600 N hold. If your load exceeds this unit, stepping up to the 50 mm bore provides 982 N push at 0.5 MPa and a 1400 N hold. Always engage the collet lock only after the rod stops completely, and release it only when piston pressures are balanced, allowing at least 0.5 s before moving. When replacing, match the 40 mm bore, 50 mm stroke, PT1/4 porting, and -S magnet. SE mounting accessories fit this body except 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 BSE40X50S FAQ
The spring-applied collet clamps the rod automatically upon air loss, delivering a 900 N static holding force. The drive forces are 628 N push and 528 N pull at 0.5 MPa, 879 N push at 0.7 MPa, and a maximum drive of 90 kgf.
You must supply 0.15-0.7 MPa to the separate G1/8 release port. Ensure the pressures on both sides of the piston are balanced to avoid sudden rod movement, and wait at least 0.5 seconds for full release before commanding motion.
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