
The AirTAC Airtac BSED Clamping Double Acting Cylinder BSED40X600S 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, 600mm stroke, PT1/4 ports, G1/8 lock-release.
The AirTAC BSED40X600S is a double-acting, double-rod ISO 15552 profile cylinder featuring an integrated spring-applied, air-released rod lock. A Ø16 mm rod exits both ends, delivering equal drive force of 528 N each way at 0.5 MPa. The rear rod is ideal for mounting flags or cams and naturally resists rotation.
This fail-safe collet lock provides a 900 N static holding force without requiring live air. If air pressure drops or an E-stop trips, the rod is securely clamped at position. It engages only after the rod stops and releases via a dedicated G1/8 port when piston sides are pressure-balanced.
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 BSED40X600S 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 BSED40X600S |
|---|---|
| Series | BSED ISO 15552 double-rod rod-lock cylinder |
| Bore size | Ø40 mm |
| Stroke | 600 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. |
| ×600 | 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.
Holds a 900 N vertical load mid-air during E-stops while the 528 N both-way drive raises and lowers the payload smoothly.
Uses the double-rod anti-rotation feature to present a stable stop block, with the fail-safe lock keeping the barrier rigid if air is lost.
Symmetric 739 N force at 0.7 MPa pushes and pulls a machining fixture, while the collet locks the 600 mm stroke position during cutting.
Select this 40 mm bore when an application requires symmetric 528 N both-way force alongside a 900 N static hold. If your load requires less holding capacity, step down to the 32 mm bore (345 N drive, 600 N hold). For heavier loads, step up to the 50 mm bore (825 N drive, 1400 N hold). Always verify your load stays under the 900 N limit.
With a 600 mm stroke, use a guide rail to prevent excessive side-loading on the rod seals. To release the lock safely, ensure both piston sides are pressure-balanced and allow at least 0.5 seconds before moving. This configuration includes a magnet for CMSE or DMSE sensors, a PT1/4 cylinder port, and M12x1.25 rod threads.
Quick checklist
The drive force is equal in both directions: 528 N at 0.5 MPa and 739 N at 0.7 MPa (max 75 kgf). The static fail-safe holding force of the integrated rod lock is 900 N.
The spring-applied collet clamps the rod immediately, providing up to 900 N of static hold with no live air. It is not a dynamic brake; you must engage it only after the rod stops, and release it via the G1/8 port after balancing pressure for at least 0.5 seconds.
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