
The AirTAC BSED Clamping Double Acting Cylinder BSED50X200S combines a double-rod ISO 15552 cylinder — a Ø20mm rod out BOTH ends for equal force both directions — with an integrated spring-applied, air-released ROD LOCK that holds up to 1400 N in either direction if air is lost. Ø50mm bore, 200mm stroke, PT1/4 ports, G1/8 lock-release.
The AirTAC BSED50X200S 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 drive force of 825 N each way at 0.5 MPa, while the internal collet mechanism delivers a bidirectional static holding force of 1400 N.
Because it is a double-rod design, the rear rod can carry a flag or cam for end-of-stroke signaling and naturally resists rotation. The lock engages fail-safe with no live air required, while the separate G1/8 release port and 0.7 MPa pressure ceiling ensure reliable operation. The -S magnet option supports CMSE reed and DMSE electronic sensors.
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 BSED50X200S 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.
| Model | Airtac BSED Clamping Double Acting Cylinder BSED50X200S |
|---|---|
| Series | BSED ISO 15552 double-rod rod-lock cylinder |
| Bore size | Ø50 mm |
| Stroke | 200 mm |
| Static holding force | 1400 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 1000 mm |
Specifications follow the official AirTAC BSED datasheet. Rod thread M16×1.5 both ends. Mounting (BSED): Basic, LB, FA, TC. Port options: PT (standard) / G (BSPP); lock-release port is G1/8.
| Pressure | Force (both directions) |
|---|---|
| 0.5 MPa | 825 N |
| 0.7 MPa (max) | 1155 N |
| Max drive (@0.7 MPa) | 118 kgf |
A rod exits both ends, so force is equal on extend and retract. Drive force is separate from the 1400 N static lock holding force. Size with a safety margin.
| B | Rod-lock cylinder prefix. |
|---|---|
| SED | ISO 15552 double-rod double-acting body. |
| 50 | Bore size in mm. |
| ×200 | 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.
Provides 1154 N of equal both-way drive for a vertical lift, while the 1400 N fail-safe collet locks the 20 mm rod instantly if air pressure drops, preventing uncontrolled falls.
Uses the double-rod configuration to move a 50 mm bore tooling shuttle with equal force and speed in both directions, using the rear rod for external cam actuation.
Applies the 825 N both-way force to actuate a conveyor pallet stop gate, engaging the spring-applied lock to hold the 200 mm stroke position securely during loading.
Select this 50 mm bore model when your application requires both symmetric drive force and fail-safe mid-stroke holding. Verify your load does not exceed the 1400 N static holding force. If you need less force, the 40 mm bore offers 528 N at 0.5 MPa with 900 N holding; if you need more, the 63 mm bore provides 1402 N at 0.5 MPa with 2200 N holding. Always engage the lock only after the rod stops, and release it only when both piston sides are pressure-balanced, allowing at least 0.5 seconds. For replacement, match the 200 mm stroke, PT1/4 port, and mounting choice (Basic, LB, FA, or TC).
Quick checklist
The spring-applied collet engages immediately, providing a bidirectional static holding force of 1400 N with no live air. It is a fail-safe holding lock, not a dynamic brake, so it only engages after the rod stops.
The double-rod design provides equal force both ways: 825 N at 0.5 MPa, 1154 N at 0.7 MPa, and a max drive of 118 kgf. To release the 1400 N lock safely, pressure-balance both piston sides and apply air to the G1/8 release port for at least 0.5 seconds.
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