Airtac BSE Clamp Standard Cylinder BSE40X300
The AirTAC Airtac BSE Clamp Standard Cylinder BSE40X300 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, 300mm stroke, PT1/4 cylinder ports, G1/8 lock-release port.
- BoreØ40 mm
- Stroke300 mm
- Static holding force900 N
- Lock typeSpring-lock / air-release
- Cylinder portPT1/4
- Lock-release portG1/8
About the Airtac BSE Clamp Standard Cylinder BSE40X300
The AirTAC BSE40X300 is a double-acting ISO 15552 profile cylinder with an integrated spring-applied, air-released rod lock. A collet clamps the 16mm rod automatically, providing a 900 N bidirectional fail-safe hold whenever air is removed or exhausted. Operating pressure is capped at 0.7 MPa.
This unit uses a separate G1/8 release port to overcome the spring and free the rod. The lock is a static holding device, not a dynamic brake; it must only engage after the rod stops, requiring at least 0.5 seconds for full release before motion. This SKU lacks a magnet, so position sensing is not supported.
Rod Lock — 900 N Static Holding (Ø40mm)
A spring clamps the collet onto the rod, so the Airtac BSE Clamp Standard Cylinder BSE40X300 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 BSE40X300 Technical Specifications
| Model | Airtac BSE Clamp Standard Cylinder BSE40X300 |
|---|---|
| Series | BSE ISO 15552 rod-lock cylinder |
| Bore size | Ø40 mm |
| Stroke | 300 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 BSE40X300
| B | Rod-lock cylinder prefix. |
|---|---|
| SE | ISO 15552 standard double-acting body. |
| 40 | Bore size in mm. |
| ×300 | 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 BSE40X300 Is Used
Vertical Pallet Lifts
Holds a 900 N raised pallet securely in place during air loss or E-stop, preventing sudden drops on packaging lines.
Machining Fixtures
Clamps a 628 N workpiece at 0.5 MPa; the collet lock maintains the 900 N hold if compressed air drops unexpectedly.
Pallet Stop Gates
Stops and retains conveyed assemblies in place; the fail-safe collet keeps the gate locked shut without needing live air.
Is the Airtac BSE Clamp Standard Cylinder BSE40X300 the Right Cylinder?
Verify your suspended load stays below the 900 N static holding force. If you need less drive, the 32mm bore yields 402 N push at 0.5 MPa and holds 600 N. If you need more, the 50mm bore provides 982 N push at 0.5 MPa and holds 1400 N.
At 300mm stroke, use a guide to prevent side-load damage to the seals. Remember to engage the lock only after the rod stops and to release it only when piston pressures are balanced. Replacement requires matching the 40mm bore, 300mm stroke, PT1/4 port, and mounting style. 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 BSE40X300 FAQ
The drive force is 628 N push and 528 N pull at 0.5 MPa, or 879 N push at 0.7 MPa (90 kgf max drive). The static holding force of the rod lock is 900 N, which is completely separate from the drive force.
The spring-applied collet clamps the rod instantly, providing a 900 N bidirectional fail-safe hold with no live air. To release it safely, apply 0.15-0.7 MPa to the G1/8 release port only after balancing piston pressures, allowing 0.5 seconds before moving.
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