Airtac BSED Clamping Double Acting Cylinder BSED80X125S
The AirTAC Airtac BSED Clamping Double Acting Cylinder BSED80X125S 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, 125mm stroke, PT3/8 ports, G1/8 lock-release.
- BoreØ80 mm
- Stroke125 mm
- Static holding force3600 N
- ConfigurationDouble rod + lock
- Cylinder portPT3/8
- Lock-release portG1/8
About the Airtac BSED Clamping Double Acting Cylinder BSED80X125S
The AirTAC BSED80X125S is a double-acting, double-rod ISO 15552 profile cylinder featuring a spring-applied, air-released collet rod lock. A rod exits both ends, providing equal drive force of 2268 N each way at 0.5 MPa and 3175 N at 0.7 MPa. The integrated fail-safe lock delivers a 3600 N static holding force, securing the load instantly if air pressure drops.
This 80 mm bore unit includes a -S magnet for CMSE or DMSE position sensing. The lock uses a separate G1/8 release port, operating at 0.15-0.7 MPa. It is not a dynamic brake; engage the lock only after the rod stops and release it only when both piston sides are pressure-balanced, allowing at least 0.5 s for safe operation.
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 BSED80X125S 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 BSED80X125S Technical Specifications
| Model | Airtac BSED Clamping Double Acting Cylinder BSED80X125S |
|---|---|
| Series | BSED ISO 15552 double-rod rod-lock cylinder |
| Bore size | Ø80 mm |
| Stroke | 125 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 BSED80X125S
| B | Rod-lock cylinder prefix. |
|---|---|
| SED | ISO 15552 double-rod double-acting body. |
| 80 | Bore size in mm. |
| ×125 | 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 BSED80X125S Is Used
Overhead Lift Crane
Holds vertical lifting loads securely with 3600 N of fail-safe force, while the double-rod design ensures equal 3175 N drive power for raising and lowering heavy tooling.
Mid-Stroke Machining
Clamps a workpiece at a precise intermediate position. The rear rod supports a flag for external confirmation while the collet lock maintains rigidity during machining.
Pallet Stopper Gate
Halts heavy pallets on a line. The symmetric 2268 N both-way force moves the stop gate up and down equally, and the lock holds the gate rigid against impacts.
Is the Airtac BSED Clamping Double Acting Cylinder BSED80X125S the Right Cylinder?
Select this 80 mm bore model when your application demands symmetric both-way force and a 3600 N fail-safe hold. Verify your load does not exceed 3600 N. If you need less force, the 63 mm bore offers 1402 N at 0.5 MPa and a 2200 N hold. If you need more, the 100 mm bore provides 3681 N at 0.5 MPa and a 5500 N hold.
When replacing, match the 80 mm bore, 125 mm stroke, PT3/8 cylinder port, and mounting choice (Basic, LB, FA, or TC). The -S suffix ensures compatibility with CMSE and DMSE sensors. Always engage the lock only after the rod stops to prevent dynamic braking damage.
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 BSED80X125S FAQ
The spring-applied collet clamps the rod instantly, providing a 3600 N static holding force to prevent movement. The lock is bidirectional and engages with no live air. Release it only when both piston sides are pressure-balanced, allowing at least 0.5 s.
The double-rod drive force is equal both ways: 2268 N at 0.5 MPa and 3175 N at 0.7 MPa, with a maximum drive of 324 kgf. The static fail-safe holding force of the lock is 3600 N. Operating pressure is capped at 0.7 MPa.
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