Airtac BSED Clamping Double Acting Cylinder BSED50X400S
The AirTAC Airtac BSED Clamping Double Acting Cylinder BSED50X400S 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, 400mm stroke, PT1/4 ports, G1/8 lock-release.
- BoreØ50 mm
- Stroke400 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 BSED50X400S
The AirTAC BSED50X400S 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. The rear rod is ideal for mounting tooling or a flag cam and provides high torsional resistance.
With no live air, the internal collet clamps the rod to provide a bidirectional static holding force of 1400 N. The lock-release mechanism operates via a separate G1/8 port, completely independent of the adjustable air cushions at both ends. Operating pressure is capped at 0.7 MPa, and the -S magnet option supports CMSE reed and DMSE electronic sensors.
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 BSED50X400S 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 BSED50X400S Technical Specifications
| Model | Airtac BSED Clamping Double Acting Cylinder BSED50X400S |
|---|---|
| Series | BSED ISO 15552 double-rod rod-lock cylinder |
| Bore size | Ø50 mm |
| Stroke | 400 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 BSED50X400S
| B | Rod-lock cylinder prefix. |
|---|---|
| SED | ISO 15552 double-rod double-acting body. |
| 50 | Bore size in mm. |
| ×400 | 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 BSED50X400S Is Used
Vertical Lift Jigs
Holds a 1400 N vertical load safely in place during an air-pressure loss, while the 825 N both-way drive force smoothly raises and lowers the jig assembly.
Symmetric Machining Stops
Uses the exiting rear rod to mount a flag cam for position confirmation, providing equal 825 N clamping force in both directions to secure the workpiece.
Pallet Indexing Gates
Indexes pallets along a 400 mm stroke with matching push and pull forces, locking the 1400 N load instantly if the conveyor emergency stop is triggered.
Is the Airtac BSED Clamping Double Acting Cylinder BSED50X400S the Right Cylinder?
Select this 50 mm bore model when your application requires symmetric both-way force and fail-safe holding up to 1400 N. If your load requires less hold, the 40 mm bore provides 528 N of drive force at 0.5 MPa and a 900 N holding force. If you need more clamping, step up to the 63 mm bore, which yields 1402 N at 0.5 MPa and a 2200 N hold. Always verify your load stays under the 1400 N limit.
Engage the lock only after the rod completely stops, and release it only when both piston sides are pressure-balanced, allowing at least 0.5 seconds for the transition. Because the stroke is 400 mm, use external guide rails to prevent side-load damage to the seals. Replacement parts must match the 50 mm bore, 400 mm stroke, PT1/4 cylinder port, and -S magnet configuration.
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 BSED50X400S FAQ
The rod lock is spring-applied, so if air is lost or an E-stop trips, the internal collet clamps the rod and holds the load up to 1400 N. It is a static lock, not a dynamic brake, so it must only be engaged after the rod stops moving.
The equal both-way drive force is 825 N at 0.5 MPa and 1154 N at 0.7 MPa, with a maximum drive of 118 kgf. The separate static holding force of the lock is 1400 N, which holds the rod with no live air.
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Covers non-human-caused product damage.
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Standard models are processed and dispatched in 3-5 business days.
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