Airtac BSED Clamping Double Acting Cylinder BSED40X900S
The AirTAC Airtac BSED Clamping Double Acting Cylinder BSED40X900S 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, 900mm stroke, PT1/4 ports, G1/8 lock-release.
- BoreØ40 mm
- Stroke900 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 BSED40X900S
The AirTAC BSED40X900S is a double-acting, double-rod ISO 15552 profile cylinder with an integrated spring-applied, air-released rod lock. A rod exits both ends, providing equal force and speed in both directions—about 528 N each way at 0.5 MPa. The rear rod can carry a flag or cam and resists rotation. The fail-safe collet lock delivers a 900 N static holding force with no live air required.
This unit features a PT1/4 cylinder port and a separate G1/8 lock-release port. The 900 mm stroke exceeds the 800 mm standard maximum, making this a made-to-order configuration. It includes a -S magnet for CMSE reed and DMSE electronic sensors, and uses adjustable air cushions at both ends (30 mm cushion length). 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 BSED40X900S 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 BSED40X900S Technical Specifications
| Model | Airtac BSED Clamping Double Acting Cylinder BSED40X900S |
|---|---|
| Series | BSED ISO 15552 double-rod rod-lock cylinder |
| Bore size | Ø40 mm |
| Stroke | 900 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 BSED40X900S
| B | Rod-lock cylinder prefix. |
|---|---|
| SED | ISO 15552 double-rod double-acting body. |
| 40 | Bore size in mm. |
| ×900 | 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 BSED40X900S Is Used
Overhead Pick-and-Place
Uses the 528 N both-way drive for vertical pick-and-place. The 900 N rod lock holds the load safely during an E-stop or air loss.
Long-Stroke Indexing Station
The 900 mm stroke moves a tooling carriage. The double-rod design resists rotation, and the rear rod mounts a cam for position feedback.
Pallet Stop Gate
Acts as a dual-direction stop gate on a conveyor. The spring-applied collet clamps the rod instantly when air is removed, holding securely without live air.
Is the Airtac BSED Clamping Double Acting Cylinder BSED40X900S the Right Cylinder?
Select this model when your application demands symmetric both-way force and a fail-safe hold up to 900 N. If you need less force, the BSED32 offers 345 N at 0.5 MPa and a 600 N hold. If you need more, the BSED50 provides 825 N at 0.5 MPa and a 1400 N hold. Always verify your load is <= 900 N. Because the 900 mm stroke is non-standard and long, use an external guide to prevent side-load damage. Engage the lock only after the rod stops, and release it only when both piston sides are pressure-balanced, allowing >= 0.5 s. For replacement, match the 40 mm bore, 900 mm stroke, PT thread, Basic/LB/FA/TC mounting, and -S magnet.
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 BSED40X900S FAQ
The spring-applied collet clamps the rod instantly, providing a 900 N static holding force to prevent movement. It is a fail-safe holding lock, not a dynamic brake, so it must only engage after the rod has stopped moving.
The drive force is equal both ways: 528 N at 0.5 MPa and 739 N at 0.7 MPa (max 75 kgf). The static fail-safe holding force of the rod lock is 900 N. Release the lock via the G1/8 port only after balancing both piston sides.
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