
The AirTAC BSED Clamping Double Acting Cylinder BSED40X175S 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, 175mm stroke, PT1/4 ports, G1/8 lock-release.
The AirTAC BSED40X175S 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 528 N each way at 0.5 MPa. The collet lock delivers a 900 N static holding force, securing the load with no live air.
This extruded aluminum body avoids external tie rods while utilizing a separate G1/8 release port. The -S magnet option supports CMSE reed and DMSE electronic sensors for position feedback. Operating pressure is capped at 0.7 MPa, and the lock engages bidirectionally only after the rod stops moving.
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 BSED40X175S 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 BSED40X175S |
|---|---|
| Series | BSED ISO 15552 double-rod rod-lock cylinder |
| Bore size | Ø40 mm |
| Stroke | 175 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.
| 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.
| B | Rod-lock cylinder prefix. |
|---|---|
| SED | ISO 15552 double-rod double-acting body. |
| 40 | Bore size in mm. |
| ×175 | 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.
Raises and lowers a 75 kgf jig with 739 N both-way force, engaging the 900 N lock to secure the load safely during an E-stop.
Uses the rear exiting rod for a cam flag while the main rod halts pallets; the 900 N hold prevents drift when air is removed.
Applies 528 N of equal force in both directions for sealing operations, locking the 16mm rod instantly if pressure drops.
Choose this 40mm bore when an application requires 739 N of symmetric force alongside a 900 N fail-safe hold. If your load demands less force, step down to the 32mm bore (345 N at 0.5 MPa, 600 N hold). For heavier loads, step up to the 50mm bore (825 N at 0.5 MPa, 1400 N hold). Always verify the load to hold is 900 N or less. 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. Replacement matches require the 40mm bore, 175mm stroke, PT1/4 port, and mounting option.
Quick checklist
The spring-applied collet clamp engages automatically, providing a 900 N bidirectional static hold with no live air. It is a fail-safe holding lock, not a dynamic brake, so it must engage only after the rod stops moving.
Drive force is equal both ways at 528 N at 0.5 MPa and 739 N at 0.7 MPa, with a max drive of 75 kgf. The static holding force is 900 N. Speed ranges from 30-800 mm/s.
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