Airtac BSED Clamping Double Acting Cylinder BSED40X400
The AirTAC Airtac BSED Clamping Double Acting Cylinder BSED40X400 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, 400mm stroke, PT1/4 ports, G1/8 lock-release.
- BoreØ40 mm
- Stroke400 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 BSED40X400
The AirTAC BSED40X400 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 and 739 N at 0.7 MPa. The rear rod is ideal for mounting cams or flags and naturally resists rotation.
This fail-safe collet lock provides a 900 N static holding force without consuming live air. If pressure drops or an E-stop trips, the rod clamps instantly. It engages via a dedicated G1/8 release port and requires a 0.5 second delay after the rod stops to engage or release safely.
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 BSED40X400 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 BSED40X400 Technical Specifications
| Model | Airtac BSED Clamping Double Acting Cylinder BSED40X400 |
|---|---|
| Series | BSED ISO 15552 double-rod rod-lock cylinder |
| Bore size | Ø40 mm |
| Stroke | 400 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 BSED40X400
| B | Rod-lock cylinder prefix. |
|---|---|
| SED | ISO 15552 double-rod double-acting body. |
| 40 | Bore size in mm. |
| ×400 | 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 BSED40X400 Is Used
Vertical Lift Gates
Holds a mid-weight 400 mm travel gate securely in place with 900 N static force during air loss, while the double rod provides equal 739 N lift and lower drive.
Dual-Tool Machining Jig
Uses the rear rod for a cam flag to track position, delivering 528 N of symmetric clamping force in both directions for repetitive part machining.
Pallet Divertor Stop
Acts as a bidirectional stop on a 30-800 mm/s conveyor, locking instantly with no live air to halt a 900 N pallet load safely during an E-stop.
Is the Airtac BSED Clamping Double Acting Cylinder BSED40X400 the Right Cylinder?
Choose this 40 mm bore when an application requires symmetric both-way force and mid-level fail-safe holding. Verify your load does not exceed the 900 N holding capacity. If you need less force, the 32 mm bore offers 345 N at 0.5 MPa and 600 N hold; stepping up to the 50 mm bore yields 825 N at 0.5 MPa and 1400 N hold.
Because this features a 400 mm stroke, use a guide rail to prevent side-load sagging on the extended rod. This SKU lacks a magnet, so it supports no position sensors. To match replacements, confirm the PT1/4 cylinder port, M12x1.25 rod thread, and Basic/LB/FA/TC mounting choice.
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 BSED40X400 FAQ
This cylinder provides equal both-way drive force of 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 with no live air required.
The lock is spring-applied and air-released via a dedicated G1/8 port. You must engage the lock only after the rod stops moving, and release it only when both piston sides are pressure-balanced, allowing at least 0.5 seconds for the collet to transition safely.
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