Airtac BSED Clamping Double Acting Cylinder BSED50X350
The AirTAC Airtac BSED Clamping Double Acting Cylinder BSED50X350 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 BSED50X350
The AirTAC BSED50X350 is a double-acting, double-rod ISO 15552 profile cylinder featuring an integrated spring-applied, air-released rod lock. A rod exits both ends, delivering equal drive force of 825 N each way at 0.5 MPa and 1154 N at 0.7 MPa. The fail-safe collet lock provides a bidirectional static holding force of 1400 N without requiring live air.
This unit uses a separate G1/8 release port to disengage the lock, while the main cylinder ports are PT1/4. It features a 20 mm rod diameter, M16x1.5 rod-end thread, and 30 mm adjustable air cushions at both ends. This specific SKU omits the magnetic piston, so position sensors cannot be fitted. The 350 mm stroke requires external guide rails to prevent side-load wear on the 50 mm bore barrel.
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 BSED50X350 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 BSED50X350 Technical Specifications
| Model | Airtac BSED Clamping Double Acting Cylinder BSED50X350 |
|---|---|
| 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 BSED50X350
| 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 BSED50X350 Is Used
Vertical Lift Gates
Holds an overhead material gate securely in place with 1400 N of fail-safe holding force during an air loss event, while the 1154 N equal both-way drive smoothly raises and lowers the 350 mm stroke.
Pallet Indexing Stop
Uses the equal push and pull force of the double rod to index a conveyor stop arm, engaging the 1400 N spring-applied lock to freeze the 50 mm bore position between cycles.
Mid-Stroke Machining Clamp
Clamps a workpiece at a specific 350 mm extension, leveraging the symmetric double-rod design to resist rotational torque while the collet lock maintains position with zero live air.
Is the Airtac BSED Clamping Double Acting Cylinder BSED50X350 the Right Cylinder?
Select this model when an application demands symmetric both-way force and a reliable 1400 N static hold. If your load requires less holding or drive force, the 40 mm bore offers 528 N drive at 0.5 MPa and 900 N holding. If you need more, step up to the 63 mm bore, which provides 1402 N drive at 0.5 MPa and 2200 N holding. Always confirm your load stays under 1400 N.
Engage the collet lock only after the rod completely stops moving, and release it only when both piston sides are pressure-balanced, allowing at least 0.5 seconds for the transition. When replacing a unit, match the 50 mm bore, 350 mm stroke, PT1/4 thread, and mounting choice from the Basic, LB, FA, or TC ISO 15552 interface options.
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 BSED50X350 FAQ
The BSED50X350 delivers an equal drive force of 825 N at 0.5 MPa and 1154 N at 0.7 MPa (max 118 kgf) in both directions. The integrated fail-safe rod lock provides a separate bidirectional static holding force of 1400 N when engaged.
The rod lock is spring-applied and air-released, meaning if air pressure drops or an E-stop trips, the collet automatically clamps the rod, providing up to 1400 N of static holding force to maintain position. It is a static lock, not a dynamic brake, so it must only be engaged after the rod stops moving.
Authorized Export Seller
Genuine AirTAC parts produced by AirTAC factory.
1-Year Warranty
Covers non-human-caused product damage.
Fast Dispatch
Standard models are processed and dispatched in 3-5 business days.
Fast Reply
Most inquiries answered within 7-8 hours.
Related AirTAC BSED Cylinders
Request a Quote for Airtac BSED Clamping Double Acting Cylinder BSED50X350
Send us the quantity and destination. We confirm price, stock and lead time — usually within 7-8 hours.