Airtac BSED Clamping Double Acting Cylinder BSED40X300S
The AirTAC Airtac BSED Clamping Double Acting Cylinder BSED40X300S 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, 300mm stroke, PT1/4 ports, G1/8 lock-release.
- BoreØ40 mm
- Stroke300 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 BSED40X300S
The AirTAC BSED40X300S is a double-acting, double-rod ISO 15552 profile cylinder featuring an integrated spring-applied, air-released rod lock. A rod exits both ends, providing equal force and speed in both directions—delivering 528 N each way at 0.5 MPa and 739 N at 0.7 MPa. The extruded aluminum barrel has no external tie rods, ensuring a clean ISO 15552 mounting interface.
The integrated collet lock delivers a 900 N bidirectional static holding force with no live air required. The lock engages when motion stops and releases via a dedicated G1/8 port once piston sides are pressure-balanced. This unit includes a magnet for CMSE reed or DMSE electronic sensors and features adjustable air cushions at both ends.
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 BSED40X300S 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 BSED40X300S Technical Specifications
| Model | Airtac BSED Clamping Double Acting Cylinder BSED40X300S |
|---|---|
| Series | BSED ISO 15552 double-rod rod-lock cylinder |
| Bore size | Ø40 mm |
| Stroke | 300 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 BSED40X300S
| B | Rod-lock cylinder prefix. |
|---|---|
| SED | ISO 15552 double-rod 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 (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 BSED40X300S Is Used
Vertical Lift Jigs
Holds vertical lifting jigs securely in place mid-stroke with 900 N of static fail-safe force, while the double-rod design provides 739 N of equal lifting and lowering drive.
Pallet Stopper Gates
Uses the rear rod extension to mount a cam flag for position sensing, while the spring-applied collet locks the stopper blade rigidly against passing pallets.
Dual-Action Transfer Arms
Moves parts equally in both directions with 528 N of symmetric force at 0.5 MPa, locking instantly via the G1/8 release port if air pressure drops.
Is the Airtac BSED Clamping Double Acting Cylinder BSED40X300S the Right Cylinder?
Select this 40 mm bore model when an application demands symmetric both-way force alongside a 900 N fail-safe holding capacity. If your load exceeds 900 N, step up to the 50 mm bore, which raises the holding force to 1400 N and drive force to 825 N at 0.5 MPa. If your drive requirement is lower, the 32 mm bore offers 345 N both-way force at 0.5 MPa and a 600 N static hold.
With a 300 mm stroke, use external guide rails to manage side loads and prevent rod binding. Remember the safety rule: engage the lock only after the rod stops, and release it only when both sides are pressure-balanced, allowing at least 0.5 seconds. Replacement matches require the 40 mm bore, 300 mm stroke, PT1/4 cylinder port, and the -S magnet option.
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 BSED40X300S FAQ
The spring-applied collet immediately clamps the rod, delivering a 900 N bidirectional static holding force with no live air. It is a fail-safe holding lock, not a dynamic brake, so it must only engage after the rod stops.
The double-rod drive force is equal both ways: 528 N at 0.5 MPa and 739 N at 0.7 MPa, with a maximum drive capacity of 75 kgf. The separate static holding force for the lock is 900 N.
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Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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