Airtac BSED Clamping Double Acting Cylinder BSED50X250
The AirTAC Airtac BSED Clamping Double Acting Cylinder BSED50X250 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, 250mm stroke, PT1/4 ports, G1/8 lock-release.
- BoreØ50 mm
- Stroke250 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 BSED50X250
The AirTAC BSED50X250 is a double-acting, double-rod ISO 15552 profile cylinder featuring an integrated spring-applied, air-released rod lock. A rod exits both ends, providing equal drive force of 825 N each way at 0.5 MPa. The collet lock delivers a 1400 N static holding force to secure the load safely with no live air.
This unit uses a Ø20 mm rod with an M16x1.5 thread, a PT1/4 cylinder port, and a dedicated G1/8 release port. Operating pressure is capped at 0.7 MPa, and the 250 mm stroke benefits from 30 mm adjustable air cushions at both ends. This SKU has no magnet, so position sensing is not available.
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 BSED50X250 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 BSED50X250 Technical Specifications
| Model | Airtac BSED Clamping Double Acting Cylinder BSED50X250 |
|---|---|
| Series | BSED ISO 15552 double-rod rod-lock cylinder |
| Bore size | Ø50 mm |
| Stroke | 250 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 BSED50X250
| B | Rod-lock cylinder prefix. |
|---|---|
| SED | ISO 15552 double-rod double-acting body. |
| 50 | Bore size in mm. |
| ×250 | 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 BSED50X250 Is Used
Vertical Lift Jigs
Holds 1400 N against gravity on air loss, while the double-rod's 825 N equal both-way force raises and lowers tooling safely.
Machining Stops
Clamps a workpiece stop securely during cutting, using the rear rod for anti-rotation and the lock to resist 1400 N of machining force.
Pallet Diverter
Shifts a diverter arm both directions with 825 N symmetric force, engaging the fail-safe lock to freeze the arm during E-stop.
Is the Airtac BSED Clamping Double Acting Cylinder BSED50X250 the Right Cylinder?
Select this 50 mm bore if you need symmetric both-way force and a 1400 N fail-safe hold. If your load exceeds 1400 N, step up to the 63 mm bore (1962 N drive, 2200 N hold); for lighter duties, the 40 mm bore offers 739 N drive and 900 N hold. Always verify the load is stopped before engaging the lock, and release only when piston sides are pressure-balanced, allowing at least 0.5 s.
For the 250 mm stroke, ensure adequate guiding to prevent side-load damage to the ISO 15552 extruded profile barrel. Replacement matches require the exact 50 mm bore, 250 mm stroke, PT port, and your chosen mounting from Basic, LB, FA, or TC.
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 BSED50X250 FAQ
The double-rod drive force is equal both ways: 825 N at 0.5 MPa and 1154 N at 0.7 MPa (max 118 kgf). The static fail-safe holding force of the spring-applied lock is 1400 N.
The spring-applied collet clamps the rod instantly on air loss or E-stop, holding up to 1400 N. To release, apply pressure to the G1/8 release port only after both piston sides are pressure-balanced, allowing at least 0.5 s.
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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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