Airtac BSE Clamp Standard Cylinder BSE40X900S
The AirTAC Airtac BSE Clamp Standard Cylinder BSE40X900S 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, 900mm stroke, PT1/4 cylinder ports, G1/8 lock-release port.
- BoreØ40 mm
- Stroke900 mm
- Static holding force900 N
- Lock typeSpring-lock / air-release
- Cylinder portPT1/4
- Lock-release portG1/8
About the Airtac BSE Clamp Standard Cylinder BSE40X900S
The AirTAC BSE40X900S is a double-acting ISO 15552 profile cylinder featuring an integrated spring-applied, air-released rod lock. A collet clamps the Ø16 mm rod to provide a 900 N bidirectional static holding force. If air is lost or an E-stop trips, the rod is held safely in place. Operating and unlocking pressures are capped at 0.7 MPa.
This 900 mm stroke exceeds the 800 mm standard limit, making it a made-to-order unit. The lock uses a separate G1/8 release port and must only engage after the rod stops. The -S magnet option supports CMSE reed and DMSE electronic sensors for position feedback.
Rod Lock — 900 N Static Holding (Ø40mm)
A spring clamps the collet onto the rod, so the Airtac BSE Clamp Standard Cylinder BSE40X900S 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 BSE40X900S Technical Specifications
| Model | Airtac BSE Clamp Standard Cylinder BSE40X900S |
|---|---|
| Series | BSE ISO 15552 rod-lock cylinder |
| Bore size | Ø40 mm |
| Stroke | 900 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 BSE40X900S
| B | Rod-lock cylinder prefix. |
|---|---|
| SE | ISO 15552 standard double-acting body. |
| 40 | Bore size in mm. |
| ×900 | 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 BSE40X900S Is Used
Vertical Lift Doors
Holds a vertical lifting door securely with 900 N of fail-safe force the moment air pressure drops, preventing a sudden crash.
Pallet Stopper Arm
Locks a conveyor stopper arm in the extended position during an E-stop, ensuring pallets cannot push past the 628 N push force limit.
Z-Axis Tool Clamp
Maintains a machining tool position on a vertical axis, relying on the 900 N collet hold rather than live air to prevent drift.
Is the Airtac BSE Clamp Standard Cylinder BSE40X900S the Right Cylinder?
Verify your suspended load stays below the 900 N holding force. If you need less drive, the 32 mm bore pushes 402 N and holds 600 N. If you need more, the 50 mm bore pushes 982 N and holds 1400 N. Always engage the lock only after the rod fully stops, and allow at least 0.5 s for full release before moving.
For a 900 mm stroke, use a guide to prevent side loads from damaging the seals. When replacing, match the 40 mm bore, 900 mm stroke, PT1/4 cylinder port, and -S magnet. SE mounting accessories fit this body perfectly, 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 BSE40X900S FAQ
The spring-applied collet clamps the rod immediately, providing a 900 N bidirectional static hold. It is a fail-safe lock, not a dynamic brake, so it only engages after the rod stops.
Drive forces at 0.5 MPa are 628 N push and 528 N pull. At 0.7 MPa, push is 879 N, yielding a max drive of 90 kgf. The separate static holding force of the rod lock is 900 N.
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