Airtac BSED Clamping Double Acting Cylinder BSED40X500
The AirTAC Airtac BSED Clamping Double Acting Cylinder BSED40X500 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, 500mm stroke, PT1/4 ports, G1/8 lock-release.
- BoreØ40 mm
- Stroke500 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 BSED40X500
The AirTAC BSED40X500 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 force and speed in both directions. You get about 528 N of drive force each way at 0.5 MPa, while a bidirectional collet provides a 900 N static holding force with no live air required.
This 40 mm bore, 500 mm stroke unit uses a PT1/4 cylinder port and a separate G1/8 lock-release port. Because this SKU lacks the -S magnet option, it does not support CMSE or DMSE position sensors. The lock is a fail-safe holding device, not a dynamic brake; engage it only after the rod stops and release it only when both 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 BSED40X500 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 BSED40X500 Technical Specifications
| Model | Airtac BSED Clamping Double Acting Cylinder BSED40X500 |
|---|---|
| Series | BSED ISO 15552 double-rod rod-lock cylinder |
| Bore size | Ø40 mm |
| Stroke | 500 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 BSED40X500
| B | Rod-lock cylinder prefix. |
|---|---|
| SED | ISO 15552 double-rod double-acting body. |
| 40 | Bore size in mm. |
| ×500 | 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 BSED40X500 Is Used
Overhead Lift Station
Holds a 900 N vertical load safely in place during an E-stop or air loss, while the dual rods provide 739 N of equal lifting and lowering force at 0.7 MPa.
Pallet Stopper Arm
Uses the rear rod end to mount a cam flag for position confirmation, actuating a 528 N both-way motion at 0.5 MPa to halt pallets.
Symmetric Transfer Jig
Equal annulus area on both sides ensures identical push and pull speeds for a 500 mm transfer jig, with the collet locking the rod during dwell.
Is the Airtac BSED Clamping Double Acting Cylinder BSED40X500 the Right Cylinder?
Choose this 40 mm bore model when you need symmetric both-way force and a 900 N fail-safe hold. If your load exceeds 900 N, step up to the 50 mm bore, which offers 825 N of drive force at 0.5 MPa and a 1400 N holding force. If you need less holding capacity, step down to the 32 mm bore, providing 345 N of drive force at 0.5 MPa and a 600 N hold.
For this 500 mm stroke, use a guide rail to prevent side-load wear on the piston. The operating pressure is capped at 0.7 MPa. To replace this unit, match the 40 mm bore, 500 mm stroke, PT1/4 port, and your mounting choice (Basic, LB, FA, or TC).
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 BSED40X500 FAQ
The spring-applied collet immediately clamps the rod, providing a 900 N static holding force to prevent movement. It is a fail-safe lock, not a dynamic brake, so it must only engage after the rod has stopped moving.
The double-rod design provides equal force both ways: 528 N at 0.5 MPa and 739 N at 0.7 MPa, with a maximum drive weight of 75 kgf at 0.7 MPa. The static holding force of 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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