Airtac BSED Clamping Double Acting Cylinder BSED40X50S
The AirTAC Airtac BSED Clamping Double Acting Cylinder BSED40X50S 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, 50mm stroke, PT1/4 ports, G1/8 lock-release.
- BoreØ40 mm
- Stroke50 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 BSED40X50S
The AirTAC BSED40X50S is a double-acting, double-rod ISO 15552 profile cylinder with an integrated spring-applied, air-released rod lock. A rod exits both ends, delivering equal force in both directions at about 528 N each way at 0.5 MPa. The rear rod is ideal for mounting a flag or cam and naturally resists rotation.
If air pressure drops or an E-stop trips, the collet mechanism clamps the 16mm rod to provide a 900N static fail-safe hold without live air. It features a separate G1/8 release port and an extruded aluminum barrel with no external tie rods. The integrated -S magnet supports CMSE reed and DMSE electronic sensors for precise position feedback.
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 BSED40X50S 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 BSED40X50S Technical Specifications
| Model | Airtac BSED Clamping Double Acting Cylinder BSED40X50S |
|---|---|
| Series | BSED ISO 15552 double-rod rod-lock cylinder |
| Bore size | Ø40 mm |
| Stroke | 50 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 BSED40X50S
| B | Rod-lock cylinder prefix. |
|---|---|
| SED | ISO 15552 double-rod double-acting body. |
| 40 | Bore size in mm. |
| ×50 | 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 BSED40X50S Is Used
Vertical Lift Gates
Lifts a 70kg gate up and down with 739N of equal both-way force, while the 900N spring-applied collet locks the load safely mid-stroke if air pressure is lost.
Pallet Diverter
Uses the rear exiting rod to mount a cam for sensor feedback while pushing pallets symmetrically, holding position securely during E-stop events.
Component Press Stand
Presses small assemblies with 528N of force and relies on the bidirectional collet clamp to maintain exact positioning against vibration when idle.
Is the Airtac BSED Clamping Double Acting Cylinder BSED40X50S the Right Cylinder?
Choose this 40mm bore with a 50mm stroke when your application needs both-way symmetric drive force and a fail-safe static hold up to 900N. If you need less force, the 32mm bore delivers 345N at 0.5 MPa and a 600N hold; if you need more, step up to the 50mm bore for 825N at 0.5 MPa and a 1400N hold. Remember the lock is a static holding device, not a dynamic brake: engage it only after the rod stops, and release it only when both piston sides are pressure-balanced, allowing at least 0.5s. For a direct replacement, match the 40mm bore, 50mm stroke, PT1/4 cylinder port, and -S magnet option. Because the 50mm stroke is short, side-load is minimal, but always guide the tooling to prevent binding.
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 BSED40X50S FAQ
The BSED40X50S delivers a drive force of 528N at 0.5 MPa and 739N at 0.7 MPa (max 75 kgf), which is exactly equal in both directions due to the double-rod design. The integrated fail-safe rod lock provides a static holding force of 900N with no live air required.
The collet is spring-applied, so if air is lost or an E-stop trips, it immediately clamps the 16mm rod to hold the load bidirectionally up to 900N. It is not a dynamic brake; you must engage it only after the rod stops, and release it only when both piston sides are pressure-balanced, allowing at least 0.5 seconds.
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