Airtac BSED Clamping Double Acting Cylinder BSED50X350S
The AirTAC BSED Clamping Double Acting Cylinder BSED50X350S 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, 350mm stroke, PT1/4 ports, G1/8 lock-release.
- BoreØ50 mm
- Stroke350 mm
- Static holding force1400 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 BSED50X350S
The AirTAC BSED50X350S is a double-acting, double-rod ISO 15552 profile cylinder with an integrated spring-applied, air-released rod lock. A rod exits both ends, providing equal force and speed in both directions—about 825 N each way at 0.5 MPa. The rear rod can carry a flag or cam while resisting rotation.
The fail-safe collet lock delivers a 1400 N static holding force with no live air required. It engages bidirectionally when air is lost or an E-stop trips, holding the load securely at position. A separate G1/8 release port controls the lock, and the operating pressure ceiling is 0.7 MPa.
Double Rod + 1400 N Rod Lock (Ø50mm)
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 BSED50X350S 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 BSED50X350S Technical Specifications
| Model | Airtac BSED Clamping Double Acting Cylinder BSED50X350S |
|---|---|
| Series | BSED ISO 15552 double-rod rod-lock cylinder |
| Bore size | Ø50 mm |
| Stroke | 350 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.
Theoretical Output Force (Ø50mm)
| 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.
Model Code: Airtac BSED Clamping Double Acting Cylinder BSED50X350S
| B | Rod-lock cylinder prefix. |
|---|---|
| SED | ISO 15552 double-rod double-acting body. |
| 50 | Bore size in mm. |
| ×350 | 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 BSED50X350S Is Used
Overhead Lift Stations
Holds a 1400 N vertical load securely during air loss, while the 825 N both-way drive cycles the lift platform smoothly at 0.5 MPa.
Machining Fixtures
The double-rod design resists rotation for precise clamping, and the fail-safe lock maintains vise position when the 1154 N drive air is cut.
Pallet Stops
A rear-rod cam triggers position sensors, while the collet lock holds the stopper arm rigid against a 1400 N dynamic load without live air.
Is the Airtac BSED Clamping Double Acting Cylinder BSED50X350S the Right Cylinder?
Select this 50 mm bore when you need both symmetric drive force and fail-safe holding. Verify your load to hold is 1400 N or less. If you need less holding power, step down to the 40 mm bore (528 N drive @0.5 MPa, 900 N hold). For heavier loads, step up to the 63 mm bore (1402 N drive @0.5 MPa, 2200 N hold). 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. At 350 mm stroke, use a guide rail to prevent side-load damage. Replacement must match the 50 mm bore, 350 mm stroke, PT1/4 port, and -S magnet.
Quick checklist
- ✓ Need both symmetric force AND fail-safe hold?
- ✓ Load to hold ≤ 1400 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 BSED50X350S FAQ
The drive force is equal both ways: 825 N at 0.5 MPa and 1154 N at 0.7 MPa (max 118 kgf). The separate static holding force of the spring-applied rod lock is 1400 N, which holds the load with no live air.
Release the lock only after the rod has stopped moving and both piston sides are pressure-balanced. Apply air to the G1/8 release port and allow at least 0.5 seconds for the collet to disengage before driving the cylinder.
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