Airtac BSED Clamping Double Acting Cylinder BSED40X450S
The AirTAC BSED Clamping Double Acting Cylinder BSED40X450S 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 BSED40X450S
The AirTAC BSED40X450S is a double-acting, double-rod ISO 15552 profile cylinder featuring an integrated spring-applied, air-released rod lock. A rod exits both ends, delivering equal drive force of 528 N each way at 0.5 MPa. The fail-safe collet mechanism provides a 900 N static holding force without consuming live air.
This 40 mm bore, 450 mm stroke variant includes a magnetic piston (-S) for CMSE or DMSE sensors. It uses adjustable air cushions at both ends (30 mm length) to decelerate loads, while the separate G1/8 release port ensures the lock disengages only when piston sides are pressure-balanced.
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 BSED40X450S 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 BSED40X450S Technical Specifications
| Model | Airtac BSED Clamping Double Acting Cylinder BSED40X450S |
|---|---|
| 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 BSED40X450S
| 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 BSED40X450S Is Used
Vertical Lift Gates
Holds a 450 mm vertical lift gate securely in place with 900 N fail-safe force during air loss, while the double rod provides 528 N of equal lifting and lowering force.
Dual-Tool Transfer
Drives a dual-tool shuttle where the rear rod mounts a flag cam, ensuring 528 N symmetric force both directions and immediate static hold when the shuttle stops.
Mid-Process Pausing
Pauses a machining fixture mid-cycle at 450 mm extension, engaging the spring-applied collet to lock the 16 mm rod safely without needing continuous air pressure.
Is the Airtac BSED Clamping Double Acting Cylinder BSED40X450S the Right Cylinder?
Select this 40 mm bore model when an application requires symmetric 528 N both-way force alongside a 900 N fail-safe hold. If your load requires less holding capacity, the 32 mm bore offers 345 N drive and 600 N hold; if you need more, stepping up to the 50 mm bore provides 825 N drive and 1400 N hold. Always verify your load is under 900 N.
For this 450 mm stroke, use a external guide to prevent side-loading damage to the seals. To replace, match the 40 mm bore, 450 mm stroke, PT1/4 cylinder port, and -S magnet. Remember to engage the lock only after the rod stops and allow at least 0.5 s for release.
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 BSED40X450S FAQ
This cylinder delivers equal drive force in both directions: 528 N at 0.5 MPa and 739 N at 0.7 MPa (max 75 kgf). The integrated fail-safe rod lock provides a separate 900 N static holding force. The lock is spring-applied and requires air pressure to release.
The double-rod design ensures equal annulus area on both sides, meaning push and pull forces are identical. To release the 900 N rod lock safely, both cylinder sides must be pressure-balanced via the PT1/4 ports, and you must allow at least 0.5 seconds before moving the rod.
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