Airtac BSED Clamping Double Acting Cylinder BSED40X450
The AirTAC Airtac BSED Clamping Double Acting Cylinder BSED40X450 combines a double-rod ISO 15552 cylinder — a Ø16mm rod out BOTH ends for equal force both directions — with an integrated spring-applied, air-released ROD LOCK that holds up to 900 N in either direction if air is lost. Ø40mm bore, 450mm stroke, PT1/4 ports, G1/8 lock-release.
- BoreØ40 mm
- Stroke450 mm
- Static holding force900 N
- ConfigurationDouble rod + lock
- Cylinder portPT1/4
- Lock-release portG1/8
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac BSED Clamping Double Acting Cylinder BSED40X450
The AirTAC BSED40X450 is a double-acting, double-rod ISO 15552 profile cylinder featuring an integrated spring-applied, air-released rod lock. Because a rod exits both ends, the annulus area is identical on both sides, delivering an equal drive force of 528 N each way at 0.5 MPa and 739 N at 0.7 MPa. The rear rod is ideal for mounting flags or cams and naturally resists rotation.
This unit provides a bidirectional fail-safe static holding force of 900 N with no live air required. The collet clamps the 16 mm rod if air pressure drops or an E-stop trips, firmly holding the load at position. Control relies on a dedicated G1/8 release port, and the operating pressure is capped at 0.7 MPa.
Double Rod + 900 N Rod Lock (Ø40mm)
A rod exits both ends for symmetric force and back-rod tooling, and a spring clamps the collet so the Airtac BSED Clamping Double Acting Cylinder BSED40X450 holds its position in both directions on air loss or E-stop. Apply 0.15–0.7 MPa to the G1/8 release port to unlock. Engage only after the rod has stopped (not a dynamic brake), and release only when both piston sides are pressure-balanced; allow ≥0.5 s for full release.
Airtac BSED Clamping Double Acting Cylinder BSED40X450 Technical Specifications
| Model | Airtac BSED Clamping Double Acting Cylinder BSED40X450 |
|---|---|
| Series | BSED ISO 15552 double-rod rod-lock cylinder |
| Bore size | Ø40 mm |
| Stroke | 450 mm |
| Static holding force | 900 N |
| Cylinder port | PT1/4 |
| Lock-release port | G1/8 |
| Configuration | Double rod, double acting |
|---|---|
| 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 |
| Max stroke | Up to 800 mm |
Specifications follow the official AirTAC BSED datasheet. Rod thread M12×1.25 both ends. Mounting (BSED): Basic, LB, FA, TC. Port options: PT (standard) / G (BSPP); lock-release port is G1/8.
Theoretical Output Force (Ø40mm)
| Pressure | Force (both directions) |
|---|---|
| 0.5 MPa | 528 N |
| 0.7 MPa (max) | 739 N |
| Max drive (@0.7 MPa) | 75 kgf |
A rod exits both ends, so force is equal on extend and retract. Drive force is separate from the 900 N static lock holding force. Size with a safety margin.
Model Code: Airtac BSED Clamping Double Acting Cylinder BSED40X450
| B | Rod-lock cylinder prefix. |
|---|---|
| SED | ISO 15552 double-rod double-acting body. |
| 40 | Bore size in mm. |
| ×450 | Stroke length in mm. |
| -S | Optional built-in magnet for CMSE / DMSE sensor sensing. |
Thread: PT (blank) / G. Mounting (BSED): Basic, LB, FA, TC. Related: SED (double rod, no lock), BSE (single-rod rod lock). Sensors CMSE/DMSE fit magnetic BSED.
Where the Airtac BSED Clamping Double Acting Cylinder BSED40X450 Is Used
Vertical Lift Holding
Raises and lowers a 75 kgf payload with 739 N of equal both-way force, engaging the 900 N spring lock to prevent drops during an air loss event.
Pallet Stopper Gate
Uses the double-rod design to mount a cam on the rear side for sensor tracking, while the front rod blocks pallets and locks firmly at 900 N when idle.
Symmetric Transfer Arm
Transfers components equally in both directions with 528 N at 0.5 MPa, utilizing the fail-safe collet to freeze the arm precisely during loading cycles.
Is the Airtac BSED Clamping Double Acting Cylinder BSED40X450 the Right Cylinder?
Select this 40 mm bore when an application demands both symmetric drive force and mid-stroke fail-safe holding, ensuring your load does not exceed the 900 N static holding capacity. If you need less force, the 32 mm bore offers 345 N at 0.5 MPa and a 600 N hold; for heavier loads, stepping up to the 50 mm bore provides 825 N at 0.5 MPa and a 1400 N hold. Engage the lock only after the rod completely stops, and release it only when both piston sides are pressure-balanced, allowing at least 0.5 seconds for the transition.
At 450 mm stroke, the extended rod is susceptible to side-loading and bending; always use external linear guides to support the load and prevent premature seal wear. When specifying a replacement, verify the 450 mm stroke, PT1/4 cylinder port, M12x1.25 rod thread, and mounting style (Basic, LB, FA, or TC). This SKU lacks a magnet, so it cannot support CMSE or DMSE position sensors.
Quick checklist
- ✓ Need both symmetric force AND fail-safe hold?
- ✓ Load to hold ≤ 900 N?
- ✓ Back-rod space for tooling/flag
- ✓ Lock engaged only when stopped
- ✓ G1/8 release-air line available
Installation & Safety Notes
- check Engage the lock only after the rod has stopped — not 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 Support both rod ends; avoid side load.
- check Use BSED mounting (Basic/LB/FA/TC).
Airtac BSED Clamping Double Acting Cylinder BSED40X450 FAQ
The double-rod design yields an equal drive force of 528 N at 0.5 MPa and 739 N at 0.7 MPa (max 75 kgf) in both directions. The integrated fail-safe rod lock provides a separate bidirectional static holding force of 900 N.
The spring-applied collet clamps the rod automatically when air is lost or an E-stop trips, holding the load up to 900 N without live air. To release safely, ensure both piston sides are pressure-balanced and apply air to the G1/8 release port for at least 0.5 seconds.
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