Airtac BSED Clamping Double Acting Cylinder BSED80X25S
The AirTAC Airtac BSED Clamping Double Acting Cylinder BSED80X25S combines a double-rod ISO 15552 cylinder — a Ø25mm rod out BOTH ends for equal force both directions — with an integrated spring-applied, air-released ROD LOCK that holds up to 3600 N in either direction if air is lost. Ø80mm bore, 25mm stroke, PT3/8 ports, G1/8 lock-release.
- BoreØ80 mm
- Stroke25 mm
- Static holding force3600 N
- ConfigurationDouble rod + lock
- Cylinder portPT3/8
- Lock-release portG1/8
About the Airtac BSED Clamping Double Acting Cylinder BSED80X25S
The AirTAC BSED80X25S 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 and speed in both directions—about 2268 N each way at 0.5 MPa. The rear rod can carry a flag or cam and resists rotation.
A collet clamps the rod with a bidirectional static holding force of 3600 N, maintaining position with no live air if pressure drops or an E-stop trips. The lock is a 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 0.5 s. The unit uses a separate G1/8 release port, and the -S magnet supports CMSE reed and DMSE electronic sensors.
Double Rod + 3600 N Rod Lock (Ø80mm)
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 BSED80X25S 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 BSED80X25S Technical Specifications
| Model | Airtac BSED Clamping Double Acting Cylinder BSED80X25S |
|---|---|
| Series | BSED ISO 15552 double-rod rod-lock cylinder |
| Bore size | Ø80 mm |
| Stroke | 25 mm |
| Static holding force | 3600 N |
| Cylinder port | PT3/8 |
| 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 M20×1.5 both ends. Mounting (BSED): Basic, LB, FA, TC. Port options: PT (standard) / G (BSPP); lock-release port is G1/8.
Theoretical Output Force (Ø80mm)
| Pressure | Force (both directions) |
|---|---|
| 0.5 MPa | 2268 N |
| 0.7 MPa (max) | 3175 N |
| Max drive (@0.7 MPa) | 324 kgf |
A rod exits both ends, so force is equal on extend and retract. Drive force is separate from the 3600 N static lock holding force. Size with a safety margin.
Model Code: Airtac BSED Clamping Double Acting Cylinder BSED80X25S
| B | Rod-lock cylinder prefix. |
|---|---|
| SED | ISO 15552 double-rod double-acting body. |
| 80 | Bore size in mm. |
| ×25 | 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 BSED80X25S Is Used
Vertical Lift Jaws
Holds a vertical gripper assembly steady at 3175 N drive force both ways, engaging the 3600 N lock to prevent dropping when air is lost.
Indexing Mill Stop
Uses the rear exiting rod for a cam flag while the collet locks the 2268 N bidirectional force in place during machining pauses.
Pallet Diverter Park
Diverts loads equally in both directions and relies on the fail-safe spring-applied collet to hold position during E-stops.
Is the Airtac BSED Clamping Double Acting Cylinder BSED80X25S the Right Cylinder?
Choose this 80 mm bore when you need symmetric both-way force and a fail-safe hold up to 3600 N. If your load to hold is lower, the 63 mm bore offers 1402 N drive force at 0.5 MPa and a 2200 N holding force. If you need more, step up to the 100 mm bore, which provides 3681 N at 0.5 MPa and a 5500 N hold. Operating pressure is capped at 0.7 MPa.
Always verify your load does not exceed the 3600 N static holding force. For safety, engage the lock only after the rod completely stops, and release it only when both piston sides are pressure-balanced. When replacing, match the 80 mm bore, 25 mm stroke, PT3/8 cylinder port, and the integrated magnet. For any stroke 300 mm or longer, add an external guide to manage side loads.
Quick checklist
- ✓ Need both symmetric force AND fail-safe hold?
- ✓ Load to hold ≤ 3600 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 BSED80X25S FAQ
The integrated rod lock is spring-applied, so it automatically clamps the rod with a 3600 N static holding force to maintain position. It is a fail-safe holding device, not a dynamic brake, and requires no live air.
The double-rod drive force is equal both ways at 2268 N at 0.5 MPa and 3175 N at 0.7 MPa, with a maximum drive of 324 kgf. The static holding force of the lock is 3600 N.
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